WPF 组织机构摄像机树 全量加载 大数据量 分页加载摄像机节点

using System; using System.Collections.Generic; using System.Collections.ObjectModel; using System.ComponentModel; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls;  namespace Models {     /// <summary>     /// 树节点数据     /// </summary>     public class TreeNodeData : INotifyPropertyChanged     {         public event PropertyChangedEventHandler PropertyChanged;          private bool _IsVisible = true;         /// <summary>         /// 是否可见         /// </summary>         public bool IsVisible         {             get             {                 return _IsVisible;             }             set             {                 _IsVisible = value;                 OnPropertyChanged("IsVisible");             }         }          private bool _IsSelected = false;         /// <summary>         /// 是否已选择         /// </summary>         public bool IsSelected         {             get             {                 return _IsSelected;             }             set             {                 _IsSelected = value;                 OnPropertyChanged("IsSelected");             }         }          private bool _IsLoading = false;         /// <summary>         /// 是否正在加载子节点         /// </summary>         public bool IsLoading         {             get             {                 return _IsLoading;             }             set             {                 _IsLoading = value;                 OnPropertyChanged("IsLoading");             }         }          private bool _IsChildLoaded = false;         /// <summary>         /// 子节点是否已加载完毕         /// </summary>         public bool IsChildLoaded         {             get             {                 return _IsChildLoaded;             }             set             {                 _IsChildLoaded = value;                 OnPropertyChanged("IsChildLoaded");             }         }          private bool _IsLeaf = false;         /// <summary>         /// 是否是叶子节点         /// </summary>         public bool IsLeaf         {             get             {                 return _IsLeaf;             }             set             {                 _IsLeaf = value;                 OnPropertyChanged("IsLeaf");             }         }          private bool _IsCheckable = false;         /// <summary>         /// 是否显示CheckBox         /// </summary>         public bool IsCheckable         {             get             {                 return _IsCheckable;             }             set             {                 _IsCheckable = value;                 OnPropertyChanged("IsCheckable");             }         }          private bool _IsExpanded = false;         /// <summary>         /// 是否展开         /// </summary>         public bool IsExpanded         {             get             {                 return _IsExpanded;             }             set             {                 _IsExpanded = value;                 OnPropertyChanged("IsExpanded");             }         }          private TreeNodeData _parent;         /// <summary>         /// 父节点数据         /// </summary>         public TreeNodeData Parent         {             get             {                 return _parent;             }             set             {                 _parent = value;                 OnPropertyChanged("Parent");             }         }          private ObservableCollection<TreeNodeData> _children = new ObservableCollection<TreeNodeData>();         /// <summary>         /// 子节点数据集合         /// </summary>         public ObservableCollection<TreeNodeData> Children         {             get             {                 return _children;             }             set             {                 _children = value;                 OnPropertyChanged("Parent");             }         }          private int _PageSize = 25;         /// <summary>         /// 每页数据条数         /// </summary>         public int PageSize         {             get             {                 return _PageSize;             }             set             {                 _PageSize = value;                 OnPropertyChanged("PageSize");             }         }          private bool _SearchMode = false;         /// <summary>         /// 搜索模式         /// </summary>         public bool SearchMode         {             get             {                 return _SearchMode;             }             set             {                 _SearchMode = value;                 OnPropertyChanged("SearchMode");                 OnPropertyChanged("PageCtrlVisible");             }         }          /// <summary>         /// 是否显示分页控件         /// </summary>         public Visibility PageCtrlVisible         {             get             {                 if (!SearchMode && IsOrgLeaf && CameraCount > 0)                 {                     return Visibility.Visible;                 }                 return Visibility.Collapsed;             }         }          /// <summary>         /// 是否显示展开按钮         /// </summary>         public Visibility ExpandVisible         {             get             {                 if (IsOrgLeaf)                 {                     if (CameraCount > 0)                     {                         return Visibility.Visible;                     }                     else                     {                         return Visibility.Hidden;                     }                 }                 else                 {                     if (Children.Count > 0)                     {                         return Visibility.Visible;                     }                     else                     {                         return Visibility.Hidden;                     }                 }             }         }          private bool _IsOrgLeaf = false;         /// <summary>         /// 是否是组织机构叶子节点         /// </summary>         public bool IsOrgLeaf         {             get             {                 return _IsOrgLeaf;             }             set             {                 _IsOrgLeaf = value;                 OnPropertyChanged("IsOrgLeaf");             }         }          private string _level;         /// <summary>         /// 组织机构等级         /// </summary>         public string Level         {             get             {                 return _level;             }             set             {                 _level = value;                 OnPropertyChanged("Level");             }         }          private bool _IsOnline = true;         /// <summary>         /// 像机是否在线         /// </summary>         public bool IsOnline         {             get             {                 return _IsOnline;             }             set             {                 _IsOnline = value;                 OnPropertyChanged("IsOnline");             }         }          private List<TreeNodeData<PtCameraInfo>> _cameraNodeDataList = new List<TreeNodeData<PtCameraInfo>>();         /// <summary>         /// 该节点下摄像机集合         /// </summary>         public List<TreeNodeData<PtCameraInfo>> CameraNodeDataList         {             get             {                 return _cameraNodeDataList;             }             set             {                 _cameraNodeDataList = value;             }         }          private int _CameraCount;         /// <summary>         /// 该节点下像机总数         /// </summary>         public int CameraCount         {             get             {                 return _CameraCount;             }             set             {                 _CameraCount = value;                 OnPropertyChanged("CameraCount");                  CameraCountString = string.Format("({0}/{1})", OnlineCameraCount, CameraCount);             }         }          private int _OnlineCameraCount;         /// <summary>         /// 该节点下在线像机总数         /// </summary>         public int OnlineCameraCount         {             get             {                 return _OnlineCameraCount;             }             set             {                 _OnlineCameraCount = value;                 OnPropertyChanged("OnlineCameraCount");                  CameraCountString = string.Format("({0}/{1})", OnlineCameraCount, CameraCount);             }         }          private string _CameraCountString;         /// <summary>         /// 该节点下像机总数String         /// </summary>         public string CameraCountString         {             get             {                 return _CameraCountString;             }             set             {                 _CameraCountString = value;                 OnPropertyChanged("CameraCountString");             }         }          /// <summary>         /// 树节点数据 构造函数         /// </summary>         public TreeNodeData()         {          }          protected void OnPropertyChanged(string name)         {             if (PropertyChanged != null)             {                 PropertyChanged(this, new PropertyChangedEventArgs(name));             }         }     } }

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks;  namespace Models {     /// <summary>     /// 树节点数据     /// </summary>     public class TreeNodeData<T> : TreeNodeData     {         private T _info;         /// <summary>         /// 业务数据         /// </summary>         public T Info         {             get             {                 return _info;             }             set             {                 _info = value;                 OnPropertyChanged("Info");             }         }          public TreeNodeData(T info)         {             _info = info;         }     } }

using Models; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls;  namespace Converter {     public class TreeItemContainerStyleSelector : StyleSelector     {         public override Style SelectStyle(object item, DependencyObject container)         {             FrameworkElement frameworkElement = container as FrameworkElement;              if (item is TreeNodeData<PtOrgInfo>)             {                 return frameworkElement.FindResource("orgItemStyle") as Style;             }             else             {                 return frameworkElement.FindResource("cameraItemStyle") as Style;             }         }     } }

<UserControl x:Class="Controls.OrgCameraTree"              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"               xmlns:d="http://schemas.microsoft.com/expression/blend/2008"               mc:Ignorable="d"               xmlns:local="clr-namespace:Controls"              xmlns:converter="clr-namespace:Converter"              xmlns:models="clr-namespace:Models"              d:DesignHeight="300" d:DesignWidth="300">     <UserControl.Resources>         <converter:TreeItemContainerStyleSelector x:Key="styleSelector"/>     </UserControl.Resources>     <Grid>         <TreeView x:Name="orgTree" ItemContainerStyleSelector="{StaticResource styleSelector}" >             <TreeView.Resources>                 <converter:BoolToVisibilityConverter x:Key="boolToVisibilityConverter"/>                 <converter:CountToVisibilityConverter x:Key="countToVisibilityConverter"/>                 <converter:CameraToTextColorConverter x:Key="cameraToTextColorConverter"/>                 <converter:CameraToImageConverter x:Key="cameraToImageConverter"/>                 <converter:OrgLevelToImageConverter x:Key="orgLevelToImageConverter"/>                  <ControlTemplate x:Key="menuItemTemplate" TargetType="MenuItem">                     <Border Name="bd" Height="30" Background="Transparent">                         <StackPanel Orientation="Horizontal">                             <Image x:Name="img" Stretch="None" Margin="10,0,10,0" Source="/Images/二级菜单左箭头.png"></Image>                             <TextBlock x:Name="tb" Margin="0,0,10,0" Foreground="#fff" VerticalAlignment="Center" Text="{Binding Header, RelativeSource={RelativeSource TemplatedParent}}"/>                         </StackPanel>                     </Border>                     <ControlTemplate.Triggers>                         <Trigger Property="IsMouseOver" Value="True">                             <Setter TargetName="bd" Property="Background" Value="#99001133" />                             <Setter TargetName="tb" Property="Foreground" Value="#ff5e5e" />                             <Setter TargetName="tb" Property="Margin" Value="0,0,9,0" />                             <Setter TargetName="img" Property="Source" Value="/Images/左箭头_选中.png"></Setter>                         </Trigger>                     </ControlTemplate.Triggers>                 </ControlTemplate>                 <ControlTemplate x:Key="menuSeperatorTemplate" TargetType="Separator">                     <Border Background="#6fff">                     </Border>                 </ControlTemplate>                 <ControlTemplate x:Key="menuTemplate" TargetType="ContextMenu">                     <Border Name="bd" Background="#99001133">                         <ItemsPresenter/>                     </Border>                 </ControlTemplate>                  <Style x:Key="orgItemStyle" TargetType="{x:Type TreeViewItem}">                     <Style.Setters>                         <Setter Property="IsExpanded" Value="{Binding IsExpanded}"></Setter>                         <Setter Property="Template">                             <Setter.Value>                                 <ControlTemplate TargetType="{x:Type TreeViewItem}">                                     <StackPanel Visibility="{Binding IsVisible,Converter={StaticResource boolToVisibilityConverter}}">                                         <StackPanel Orientation="Horizontal"  Height="20">                                             <ToggleButton Checked="toggleButton_Checked" Name="toggleButton" Focusable="True" PreviewMouseLeftButtonDown="toggleButton_PreviewMouseLeftButtonDown" IsChecked="{Binding RelativeSource={RelativeSource Mode=TemplatedParent},Path=IsExpanded,Mode=TwoWay}"                                                           Visibility="{Binding ExpandVisible}" IsTabStop="False" >                                                 <ToggleButton.Template>                                                     <ControlTemplate TargetType="{x:Type ToggleButton}" >                                                         <Border   Height="20" Width="20" Background="Transparent">                                                             <Path Height="6" Width="6" HorizontalAlignment="Center" Name="expander" RenderTransformOrigin="0.5,0.5" Data="M0,0 L0,6 L6,0 z" Stroke="White" StrokeThickness="1"  VerticalAlignment="Center"  Visibility="{Binding IsLeaf,Converter={StaticResource boolToVisibilityConverter},ConverterParameter=false}">                                                             </Path>                                                         </Border>                                                         <ControlTemplate.Triggers>                                                             <Trigger Property="IsChecked" Value="true">                                                                 <Setter Property="RenderTransform" TargetName="expander">                                                                     <Setter.Value>                                                                         <RotateTransform Angle="180"/>                                                                     </Setter.Value>                                                                 </Setter>                                                                 <Setter Property="Fill" TargetName="expander" Value="White">                                                                 </Setter>                                                             </Trigger>                                                             <Trigger Property="IsChecked" Value="false">                                                                 <Setter Property="RenderTransform" TargetName="expander">                                                                     <Setter.Value>                                                                         <RotateTransform Angle="135"/>                                                                     </Setter.Value>                                                                 </Setter>                                                                 <Setter Property="Fill" TargetName="expander" Value="White">                                                                 </Setter>                                                             </Trigger>                                                         </ControlTemplate.Triggers>                                                     </ControlTemplate>                                                 </ToggleButton.Template>                                             </ToggleButton>                                             <CheckBox VerticalAlignment="Center" Tag="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type TreeViewItem}},Path=DataContext}" IsChecked="{Binding IsSelected,Mode=TwoWay}" Checked="CheckBox_Checked" Unchecked="CheckBox_Unchecked" Click="CheckBox_Click" Margin="3 0 0 0" Visibility="{Binding IsCheckable, Converter={StaticResource boolToVisibilityConverter}}" IsTabStop="False" />                                             <StackPanel Margin="5 0 0 0" Orientation="Horizontal"  Name="panel">                                                 <Image Height="15" Width="15" Source="{Binding Info.orgLevel,Converter={StaticResource orgLevelToImageConverter}}" VerticalAlignment="Center"/>                                                 <TextBlock x:Name="textBlock" Foreground="White" Margin="5 0 0 0" Text="{Binding Info.orgName}" VerticalAlignment="Center"/>                                                 <TextBlock x:Name="textCount" Foreground="White" Margin="5 0 0 0" Text="{Binding CameraCountString}" VerticalAlignment="Center"/>                                                 <Viewbox Height="15" Margin="5 0 0 0" Visibility="{Binding IsLoading,Converter={StaticResource boolToVisibilityConverter}}">                                                     <local:LoadingWait/>                                                 </Viewbox>                                             </StackPanel>                                         </StackPanel>                                         <Grid x:Name="itemspanel" Visibility="Collapsed" Margin="15 0 0 0">                                             <Grid.RowDefinitions>                                                 <RowDefinition Height="auto"/>                                                 <RowDefinition Height="auto"/>                                             </Grid.RowDefinitions>                                             <ItemsPresenter/>                                             <local:SimplePageControl x:Name="pageCtrl" Grid.Row="1" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="30 0 0 0" TextColor="White"                                                   Visibility="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type TreeViewItem}},Path=DataContext.PageCtrlVisible}"                                                  Tag="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type TreeViewItem}},Path=DataContext}"                                                  TotalRecords="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type TreeViewItem}},Path=DataContext.CameraCount}"                                                  RecordsPerPage="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type TreeViewItem}},Path=DataContext.PageSize}"                                                  evtPageChanged="pageCtrl_evtPageChanged" />                                         </Grid>                                     </StackPanel>                                     <ControlTemplate.Triggers>                                         <Trigger Property="IsSelected" Value="true">                                             <Setter Property="Background" TargetName="textBlock" Value="#FF497AE1"/>                                             <Setter Property="Foreground" TargetName="textBlock" Value="White"/>                                         </Trigger>                                         <Trigger Property="IsExpanded" Value="true">                                             <Setter TargetName="itemspanel" Property="Visibility" Value="Visible"/>                                         </Trigger>                                     </ControlTemplate.Triggers>                                 </ControlTemplate>                             </Setter.Value>                         </Setter>                     </Style.Setters>                 </Style>                  <Style x:Key="cameraItemStyle" TargetType="{x:Type TreeViewItem}">                     <Style.Setters>                         <Setter Property="Template">                             <Setter.Value>                                 <ControlTemplate TargetType="{x:Type TreeViewItem}">                                     <StackPanel Visibility="{Binding IsVisible,Converter={StaticResource boolToVisibilityConverter}}">                                         <StackPanel Orientation="Horizontal" Height="20" Margin="10 0 0 0">                                             <CheckBox IsChecked="{Binding IsSelected,Mode=TwoWay}" Visibility="{Binding IsCheckable, Converter={StaticResource boolToVisibilityConverter}}" Margin="5 0 0 0" VerticalAlignment="Center" Click="Camera_CheckBox_Click" Tag="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type TreeViewItem}},Path=DataContext}" IsTabStop="False" />                                             <StackPanel Margin="5 0 0 0" Orientation="Horizontal"  Name="panel">                                                 <Image x:Name="cameraImg" Height="16" Width="16" Source="{Binding Info,Converter={StaticResource cameraToImageConverter}}"  VerticalAlignment="Center"/>                                                 <TextBlock MouseLeftButtonDown="textBlock_MouseLeftButtonDown" x:Name="textBlock" Foreground="{Binding IsOnline,Converter={StaticResource cameraToTextColorConverter}}" Margin="5 0 0 0" Tag="{Binding Info}" Text="{Binding Info.CAMERA_NAME}" VerticalAlignment="Center" />                                             </StackPanel>                                         </StackPanel>                                         <ItemsPresenter  Name="itemspanel" Visibility="Collapsed" Margin="10 0 0 0"/>                                         <StackPanel.ContextMenu>                                             <ContextMenu Template="{StaticResource menuTemplate}">                                                 <MenuItem Name="menuShowDetails" Header="摄像机详细信息" Template="{StaticResource menuItemTemplate}" Tag="{Binding Info}" Click="menuShowDetails_Click"></MenuItem>                                             </ContextMenu>                                         </StackPanel.ContextMenu>                                     </StackPanel>                                     <ControlTemplate.Triggers>                                         <Trigger Property="IsSelected" Value="true">                                             <Setter Property="Background" TargetName="textBlock" Value="#FF497AE1"/>                                             <Setter Property="Foreground" TargetName="textBlock" Value="White"/>                                         </Trigger>                                         <Trigger Property="IsExpanded" Value="true">                                             <Setter TargetName="itemspanel" Property="Visibility" Value="Visible"/>                                         </Trigger>                                     </ControlTemplate.Triggers>                                 </ControlTemplate>                             </Setter.Value>                         </Setter>                     </Style.Setters>                 </Style>             </TreeView.Resources>             <TreeView.Template>                 <ControlTemplate>                     <ScrollViewer HorizontalScrollBarVisibility="Auto" MinHeight="{Binding ElementName=orgTree,Path=ActualHeight}" MinWidth="{Binding ElementName=orgTree, Path=ActualWidth}">                         <ItemsPresenter></ItemsPresenter>                     </ScrollViewer>                 </ControlTemplate>             </TreeView.Template>             <TreeView.ItemTemplate>                 <HierarchicalDataTemplate DataType="{x:Type models:TreeNodeData}" ItemsSource="{Binding Path=Children}" ></HierarchicalDataTemplate>             </TreeView.ItemTemplate>         </TreeView>          <local:LoadingWait VerticalAlignment="Center" HorizontalAlignment="Center" x:Name="loadingWait"/>     </Grid> </UserControl>

using Models; using System; using System.Collections.Generic; using System.Collections.ObjectModel; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Controls.Primitives; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes;  namespace Controls {     /// <summary>     /// 组织机构摄像机树     /// </summary>     public partial class OrgCameraTree : UserControl     {         private ObservableCollection<TreeNodeData<PtOrgInfo>> _list;          public OrgCameraTree()         {             InitializeComponent();         }          /// <summary>         /// 加载树节点         /// </summary>         public void LoadTree(ObservableCollection<TreeNodeData<PtOrgInfo>> list)         {             _list = list;             this.orgTree.ItemsSource = list;             loadingWait.Visibility = Visibility.Collapsed;         }          #region CheckBox 组织机构选择         private void CheckBox_Checked(object sender, RoutedEventArgs e)         {          }          private void CheckBox_Unchecked(object sender, RoutedEventArgs e)         {          }          private void CheckBox_Click(object sender, RoutedEventArgs e)         {             CheckBox checkBox = sender as CheckBox;             TreeNodeData nodeData = checkBox.Tag as TreeNodeData;              if (checkBox.IsChecked.Value)             {                 CheckChildren(nodeData, true);             }             else             {                 CheckParent(nodeData.Parent, false);                 CheckChildren(nodeData, false);             }         }          private void CheckChildren(TreeNodeData nodeData, bool check)         {             if (nodeData.IsOrgLeaf)             {                 nodeData.CameraNodeDataList.ForEach(item => item.IsSelected = check);             }              nodeData.Children.ToList().ForEach(child =>             {                 child.IsSelected = check;                 CheckChildren(child, check);             });         }          private void CheckParent(TreeNodeData parent, bool check)         {             if (parent != null)             {                 parent.IsSelected = check;                 CheckParent(parent.Parent, check);             }         }         #endregion          #region CheckBox 摄像机选择         private void Camera_CheckBox_Click(object sender, RoutedEventArgs e)         {             CheckBox checkBox = sender as CheckBox;             TreeNodeData nodeData = checkBox.Tag as TreeNodeData;              if (checkBox.IsChecked.Value)             {             }             else             {                 CheckParent(nodeData.Parent, false);             }         }         #endregion          #region toggleButton 展开按钮事件         private void toggleButton_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)         {             ToggleButton btn = sender as ToggleButton;             btn.IsChecked = !btn.IsChecked;             e.Handled = true;         }          private void toggleButton_Checked(object sender, RoutedEventArgs e)         {             ToggleButton btn = sender as ToggleButton;         }         #endregion          #region pageCtrl_evtPageChanged 分页事件         /// <summary>         /// 分页事件         /// </summary>         private void pageCtrl_evtPageChanged(object sender, PageChangedEventArgs e)         {             SimplePageControl simplePageControl = sender as SimplePageControl;             TreeNodeData<PtOrgInfo> nodeData = simplePageControl.Tag as TreeNodeData<PtOrgInfo>;             List<TreeNodeData<PtCameraInfo>> list = GetCameraListPage(nodeData.CameraNodeDataList, nodeData.Info.id, e.PageNow, e.RecordsPerPage);             nodeData.Children.Clear();             list.ForEach(item =>             {                 nodeData.Children.Add(item);             });         }         #endregion          #region GetCameraListPage 分页获取像机数据         /// <summary>         /// 分页获取像机数据         /// </summary>         private List<TreeNodeData<PtCameraInfo>> GetCameraListPage(List<TreeNodeData<PtCameraInfo>> cameraNodeDataList, long orgId, int currentPage, int pageSize)         {             List<TreeNodeData<PtCameraInfo>> result = new List<TreeNodeData<PtCameraInfo>>();              int start = pageSize * (currentPage - 1);             int end = pageSize * currentPage - 1;              for (int i = start; i <= end; i++)             {                 if (i < cameraNodeDataList.Count)                 {                     result.Add(cameraNodeDataList[i]);                 }             }              return result;         }         #endregion          #region textBlock_MouseLeftButtonDown 拖放         private void textBlock_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)         {             try             {                 if (e.LeftButton == MouseButtonState.Pressed)                 {                     //如果是录像回放，不加载拖拽事件                     if (false)                     {                         return;                     }                     PtCameraInfo info = (sender as TextBlock).Tag as PtCameraInfo;                     DragDrop.DoDragDrop(this, info, DragDropEffects.Copy);                 }             }             catch (Exception ex)             {              }         }         #endregion          #region menuShowDetails_Click 显示摄像机详细信息         private void menuShowDetails_Click(object sender, RoutedEventArgs e)         {             MenuItem menuItem = sender as MenuItem;             PtCameraInfo cameraInfo = menuItem.Tag as PtCameraInfo;             MessageBox.Show(cameraInfo.CAMERA_NAME);         }         #endregion          #region 获取选择的摄像机         /// <summary>         /// 获取选择的摄像机         /// </summary>         public List<PtCameraInfo> GetSelectedCameras()         {             List<PtCameraInfo> result = new List<PtCameraInfo>();              foreach (TreeNodeData item in _list)             {                 result.AddRange(GetSelectedCameras(item));             }              return result;         }          private List<PtCameraInfo> GetSelectedCameras(TreeNodeData nodeData)         {             List<PtCameraInfo> result = new List<PtCameraInfo>();              if (nodeData.IsOrgLeaf)             {                 foreach (TreeNodeData<PtCameraInfo> item in nodeData.CameraNodeDataList)                 {                     if (item.IsSelected)                     {                         result.Add(item.Info);                     }                 }             }             else             {                 foreach (TreeNodeData item in nodeData.Children)                 {                     result.AddRange(GetSelectedCameras(item));                 }             }              return result;         }         #endregion          #region 获取选择的组织机构         /// <summary>         /// 获取选择的摄像机         /// </summary>         public List<PtOrgInfo> GetSelectedOrgs()         {             List<PtOrgInfo> result = new List<PtOrgInfo>();              foreach (TreeNodeData item in _list)             {                 result.AddRange(GetSelectedOrgs(item));             }              return result;         }          private List<PtOrgInfo> GetSelectedOrgs(TreeNodeData nodeData)         {             List<PtOrgInfo> result = new List<PtOrgInfo>();              if (nodeData is TreeNodeData<PtOrgInfo>)             {                 PtOrgInfo orgInfo = (nodeData as TreeNodeData<PtOrgInfo>).Info;                 if (nodeData.IsSelected)                 {                     result.Add(orgInfo);                 }                  foreach (TreeNodeData item in nodeData.Children)                 {                     result.AddRange(GetSelectedOrgs(item));                 }             }              return result;         }         #endregion          #region 查询节点         /// <summary>         /// 查询节点         /// </summary>         public void Search(string text)         {             this.loadingWait.Visibility = Visibility.Visible;              foreach (TreeNodeData item in _list)             {                 ClearSearch(item); //清空查询结果             }              if (!string.IsNullOrWhiteSpace(text))             {                 Search(text, null);             }              this.loadingWait.Visibility = Visibility.Collapsed;         }          /// <summary>         /// 查询节点         /// </summary>         private bool Search(string text, TreeNodeData nodeData = null)         {             bool result = false; //是否查询到满足条件的节点              if (nodeData == null)             {                 foreach (TreeNodeData<PtOrgInfo> item in _list) //遍历根节点                 {                     //item.NodeData.CameraCountVisible = Visibility.Collapsed; //隐藏像机数                      bool bl = Search(text, item); //递归查询其子节点                     if (item.Info.orgName.Contains(text)) //当前节点满足条件                     {                         item.IsVisible = true;                     }                     else                     {                         if (bl) //子节点查询到结果                         {                             item.IsVisible = true;                         }                         else //子节点没有查询到结果                         {                             item.IsVisible = false;                         }                     }                 }             }             else             {                 //nodeData.CameraCountVisible = Visibility.Collapsed; //隐藏像机数                  if (nodeData.IsOrgLeaf)                 {                     foreach (TreeNodeData<PtCameraInfo> item in nodeData.CameraNodeDataList)                     {                         if (item.Info.SHORT_MSG != null && item.Info.SHORT_MSG.Contains(text)) //像机节点满足条件                         {                             nodeData.SearchMode = true; //隐藏分页控件                             item.IsVisible = true; //显示                             bool exists = false;                             foreach (TreeNodeData<PtCameraInfo> child in item.Parent.Children)                             {                                 if (child.Info.ID == item.Info.ID)                                 {                                     exists = true;                                     break;                                 }                             }                             if (!exists)                             {                                 item.Parent.Children.Add(item);                             }                             result = true;                         }                         else                         {                             item.IsVisible = false; //不满足查询条件不显示                         }                     }                 }                 else                 {                     foreach (TreeNodeData<PtOrgInfo> item in nodeData.Children)                     {                         bool bl = Search(text, item); //递归查询其子节点                         if (item.Info.orgName.Contains(text)) //当前节点满足条件                         {                             item.IsVisible = true;                             result = true;                         }                         else                         {                             if (bl) //子节点查询到结果                             {                                 item.IsVisible = true;                                 result = true;                             }                             else //子节点没有查询到结果                             {                                 item.IsVisible = false;                             }                         }                     }                 }             }              return result;         }         #endregion          #region 清空查询         /// <summary>         /// 清空查询         /// </summary>         private void ClearSearch(TreeNodeData nodeData)         {             nodeData.SearchMode = false; //显示分页控件             nodeData.IsVisible = true;             if (nodeData.CameraNodeDataList != null && nodeData.CameraNodeDataList.Count > 0)             {                 foreach (TreeNodeData<PtCameraInfo> child in nodeData.CameraNodeDataList)                 {                     child.IsVisible = true;                 }                  //分页处理                 List<TreeNodeData<PtCameraInfo>> list = GetCameraListPage(nodeData.CameraNodeDataList, (nodeData as TreeNodeData<PtOrgInfo>).Info.id, 1, nodeData.PageSize);                 nodeData.Children.Clear();                 list.ForEach(item =>                 {                     nodeData.Children.Add(item);                 });             }             else             {                 foreach (TreeNodeData child in nodeData.Children)                 {                     ClearSearch(child);                 }             }         }         #endregion      } }

using Models; using System; using System.Collections.Generic; using System.Collections.ObjectModel; using System.Linq; using System.Text; using System.Threading; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using Utils;  namespace WpfTreeDemo {     /// <summary>     /// MainWindow.xaml 的交互逻辑     /// </summary>     public partial class MainWindow : Window     {         #region 变量         private List<PtOrgInfo> orgListAll = new List<PtOrgInfo>();         private List<PtCameraInfo> cameraListAll = new List<PtCameraInfo>();         private List<TreeNodeData<PtOrgInfo>> orgNodeDataListFlat = new List<TreeNodeData<PtOrgInfo>>();         private List<TreeNodeData<PtCameraInfo>> cameraNodeDataList = new List<TreeNodeData<PtCameraInfo>>();         #endregion          #region 构造函数         public MainWindow()         {             InitializeComponent();         }         #endregion          #region Window_Loaded         private void Window_Loaded(object sender, RoutedEventArgs e)         {             ShowOrgCameraTree();         }         #endregion          #region Log         private void Log(string log)         {             this.Dispatcher.InvokeAsync(() =>             {                 txt.AppendText(DateTime.Now.ToString("HH:mm:ss.fff") + " " + log + "rn");                 txt.ScrollToEnd();             });         }         #endregion          // ==== 组织机构摄像机树 ========================================================================================          #region ShowOrgCameraTree 显示组织机构摄像机树         /// <summary>         /// 显示组织机构摄像机树         /// </summary>         private void ShowOrgCameraTree(bool bigData = false)         {             DateTime dt = DateTime.Now;             DateTime startTime = DateTime.Now;             orgListAll = new List<PtOrgInfo>();             cameraListAll = new List<PtCameraInfo>();             orgNodeDataListFlat = new List<TreeNodeData<PtOrgInfo>>();             cameraNodeDataList = new List<TreeNodeData<PtCameraInfo>>();             ObservableCollection<TreeNodeData<PtOrgInfo>> orgNodeDataList = null;             this.orgTree.LoadTree(new ObservableCollection<Models.TreeNodeData<Models.PtOrgInfo>>());             this.orgTree.loadingWait.Visibility = Visibility.Visible;             Log("============================================================");              BackWork.RunAsync(() =>             {                 #region 生成组织机构和摄像机测试数据                 Random rnd = new Random();                  int countI = 20;                 int countJ = 20;                 int countK = 20;                  for (int i = 0; i < countI; i++)                 {                     long codeI = 10 + i;                      PtOrgInfo orgI = new PtOrgInfo();                     orgI.id = codeI;                     orgI.parId = -1;                     orgI.orgName = "测试机构" + codeI;                     orgI.orgLevel = 0;                     orgListAll.Add(orgI);                      for (int j = 0; j < countJ; j++)                     {                         long codeJ = codeI * 100 + (j + 1);                          PtOrgInfo orgJ = new PtOrgInfo();                         orgJ.id = codeJ;                         orgJ.parId = codeI;                         orgJ.orgName = "测试机构" + codeJ;                         orgJ.orgLevel = 1;                         orgListAll.Add(orgJ);                          for (int k = 0; k < countK; k++)                         {                             long codeK = codeJ * 100 + (k + 1);                              PtOrgInfo orgK = new PtOrgInfo();                             orgK.id = codeK;                             orgK.parId = codeJ;                             orgK.orgName = "测试机构" + codeK;                             orgK.orgLevel = 2;                             orgListAll.Add(orgK);                              int countCamera;                             if (i == 0 && j == 0 && k < 2)                             {                                 countCamera = 105;                             }                             else                             {                                 countCamera = rnd.Next(1, 50);                             }                             if (bigData) countCamera = rnd.Next(135, 180);                              for (int x = 0; x < countCamera; x++)                             {                                 string cameraId = (codeK * 1000 + (x + 1)).ToString();                                  PtCameraInfo camera = new PtCameraInfo();                                 camera.ID = cameraId;                                 camera.ORG_ID = orgK.id;                                 camera.CAMERA_NAME = "测试像机" + cameraId;                                 camera.SHORT_MSG = camera.CAMERA_NAME;                                 camera.CAMERA_TYPE = rnd.Next(1, 6);                                 camera.CAMERA_STATE = rnd.Next(0, 2).ToString();                                 cameraListAll.Add(camera);                             }                         }                     }                 }                 #endregion                  string timeStr = DateTime.Now.Subtract(dt).TotalSeconds.ToString("0.000");                 this.Dispatcher.InvokeAsync(() =>                 {                     Log("第1步，生成测试数据耗时：" + timeStr + " 秒");                     Log("组织机构总数：" + orgListAll.Count + "，摄像机总数：" + cameraListAll.Count);                 });                 dt = DateTime.Now;                  orgNodeDataList = new ObservableCollection<TreeNodeData<PtOrgInfo>>(CreateNodeData(orgListAll, cameraListAll, out orgNodeDataListFlat, out cameraNodeDataList)); //生成树节点数据                  timeStr = DateTime.Now.Subtract(dt).TotalSeconds.ToString("0.000");                 this.Dispatcher.InvokeAsync(() =>                 {                     Log("第2步，生成节点数据耗时：" + timeStr + " 秒");                 });                 dt = DateTime.Now;             }, () =>             {                 this.orgTree.LoadTree(orgNodeDataList);                  SetCameraCount(orgNodeDataListFlat, orgListAll, cameraNodeDataList); //设置在摄像机离线数量                  string timeStr = DateTime.Now.Subtract(dt).TotalSeconds.ToString("0.000");                 Log("第3步，绑定树节点耗时：" + timeStr + " 秒");                 timeStr = DateTime.Now.Subtract(startTime).TotalSeconds.ToString("0.000");                 Log("总耗时：" + timeStr + " 秒");             }, ex =>             {                 Log(ex.Message + "rn" + ex.StackTrace);             });         }         #endregion          #region CreateNodeData 创建树节点         /// <summary>         /// 创建树节点         /// </summary>         private List<TreeNodeData<PtOrgInfo>> CreateNodeData(List<PtOrgInfo> orgListAll, List<PtCameraInfo> cameraListAll, out List<TreeNodeData<PtOrgInfo>> orgNodeDataListFlat, out List<TreeNodeData<PtCameraInfo>> cameraNodeDataList)         {             //组织机构节点集合             List<TreeNodeData<PtOrgInfo>> orgNodeDataList = orgListAll.ConvertAll(org =>             {                 TreeNodeData<PtOrgInfo> nodeData = new TreeNodeData<PtOrgInfo>(org);                 nodeData.IsCheckable = true;                 return nodeData;             });              //摄像机节点集合             cameraNodeDataList = cameraListAll.ConvertAll(camera =>             {                 TreeNodeData<PtCameraInfo> nodeData = new TreeNodeData<PtCameraInfo>(camera);                 nodeData.IsOnline = camera.CAMERA_STATE == "1" ? true : false;                 nodeData.IsCheckable = true;                 return nodeData;             });              //组织机构节点字典             Dictionary<long, TreeNodeData<PtOrgInfo>> dictOrgListAll = orgNodeDataList.ToLookup(item => item.Info.id).ToDictionary(item => item.Key, item => item.First());              //遍历摄像机节点集合             foreach (TreeNodeData<PtCameraInfo> cameraNodeData in cameraNodeDataList.ToList())             {                 long cameraOrgId = Convert.ToInt64(cameraNodeData.Info.ORG_ID);                 if (dictOrgListAll.ContainsKey(cameraOrgId))                 {                     TreeNodeData<PtOrgInfo> parentNodeData = dictOrgListAll[cameraOrgId];                     parentNodeData.IsOrgLeaf = true;                     cameraNodeData.Parent = parentNodeData;                     if (parentNodeData.Children.Count < cameraNodeData.PageSize)                     {                         parentNodeData.Children.Add(cameraNodeData);                     }                     parentNodeData.CameraNodeDataList.Add(cameraNodeData);                     parentNodeData.CameraCount = parentNodeData.CameraNodeDataList.Count;                 }             }              //遍历组织机构节点集合             foreach (TreeNodeData<PtOrgInfo> orgNodeData in orgNodeDataList.ToList())             {                 if (orgNodeData.Info.parId > 0)                 {                     if (dictOrgListAll.ContainsKey(orgNodeData.Info.parId))                     {                         TreeNodeData<PtOrgInfo> parentNodeData = dictOrgListAll[orgNodeData.Info.parId];                         orgNodeData.Parent = parentNodeData;                         parentNodeData.Children.Add(orgNodeData);                     }                 }             }              orgNodeDataListFlat = orgNodeDataList;             return orgNodeDataList.FindAll(nodeData => nodeData.Info.parId == -1);         }         #endregion          #region SetCameraCount 显示组织机构下的像机总数         /// <summary>         /// 显示组织机构下的像机总数         /// </summary>         private void SetCameraCount(List<TreeNodeData<PtOrgInfo>> orgNodeDataList, List<PtOrgInfo> orgListAll, List<TreeNodeData<PtCameraInfo>> cameraNodeDataList)         {             int _buildPeroid = 0;             int _treeType = 1;              Dictionary<long, int> dictCameraCount;             Dictionary<long, int> dictOnlineCameraCount;             GetCameraCountDict(orgListAll, cameraNodeDataList, out dictCameraCount, out dictOnlineCameraCount);              if (_buildPeroid == 0)             {                 if (_treeType == 1)                 {                     Dictionary<long, int> dicCameraCount = dictCameraCount;                     Dictionary<long, int> dicOnlineCameraCount = dictOnlineCameraCount;                      foreach (TreeNodeData<PtOrgInfo> orgNodeData in orgNodeDataList)                     {                         PtOrgInfo org = orgNodeData.Info as PtOrgInfo;                          int nOnline;                         int nCount;                         if (dicCameraCount.TryGetValue(org.id, out nCount) && dicOnlineCameraCount.TryGetValue(org.id, out nOnline))                         {                             orgNodeData.CameraCount = nCount;                             orgNodeData.CameraCountString = string.Format("({0}/{1})", nOnline, nCount);                         }                     }                 }                 else                 {                     foreach (TreeNodeData<PtOrgInfo> orgNodeData in orgNodeDataList)                     {                         PtOrgInfo org = orgNodeData.Info as PtOrgInfo;                          int nOnline;                         int nCount;                         dictCameraCount.TryGetValue(org.id, out nCount);                         dictOnlineCameraCount.TryGetValue(org.id, out nOnline);                         orgNodeData.CameraCount = nCount;                         orgNodeData.CameraCountString = string.Format("({0}/{1})", nOnline, nCount);                     }                 }             }             else             {                 foreach (TreeNodeData<PtOrgInfo> orgNodeData in orgNodeDataList)                 {                     PtOrgInfo org = orgNodeData.Info as PtOrgInfo;                      int nOnline;                     int nCount;                     dictCameraCount.TryGetValue(org.id, out nCount);                     dictOnlineCameraCount.TryGetValue(org.id, out nOnline);                     orgNodeData.CameraCount = nCount;                     orgNodeData.CameraCountString = string.Format("({0}/{1})", nOnline, nCount);                 }             }         }          #endregion 显示组织机构下的像机总数          #region GetCameraCountDict 计算所有组织机构下的像机数          /// <summary>         /// 计算所有组织机构下的像机数         /// </summary>         private void GetCameraCountDict(List<PtOrgInfo> orgListAll, List<TreeNodeData<PtCameraInfo>> cameraNodeDataList, out Dictionary<long, int> dictCameraCount, out Dictionary<long, int> dictOnlineCameraCount)         {             int _treeType = 1;             List<PtCameraInfo> cameraListAll = cameraNodeDataList.ConvertAll<PtCameraInfo>(a => a.Info);              dictCameraCount = new Dictionary<long, int>();             dictOnlineCameraCount = new Dictionary<long, int>();              //组织机构字典             Dictionary<long, PtOrgInfo> dictOrgListAll = orgListAll.ToLookup(item => item.id).ToDictionary(item => item.Key, item => item.First());             Dictionary<string, PtOrgInfo> dictOrgListAllByOrgName = orgListAll.ToLookup(item => item.orgName).ToDictionary(item => item.Key, item => item.First());              //初始化数据             foreach (PtOrgInfo orgInfo in orgListAll)             {                 dictCameraCount.Add(orgInfo.id, 0);                 dictOnlineCameraCount.Add(orgInfo.id, 0);             }              //遍历所有父级组织机构，像机数+1             Action<PtOrgInfo, Dictionary<long, int>> action = null;             action = (PtOrgInfo orgInfo, Dictionary<long, int> dict) =>             {                 PtOrgInfo parentOrg;                 if (dictOrgListAll.TryGetValue(orgInfo.parId, out parentOrg))                 {                     dict[parentOrg.id]++;                     action(parentOrg, dict);                 }             };              if (_treeType == 5) cameraListAll = cameraListAll.FindAll(a => a.RECODE_SAVE_TYPE == 2 && a.BuildPeriod == 2);              foreach (TreeNodeData<PtCameraInfo> cameraNodeData in cameraNodeDataList)             {                 long orgId = -1;                 PtCameraInfo cameraInfo = cameraNodeData.Info;                  if (cameraInfo.ORG_ID.HasValue && cameraNodeData.IsVisible)                 {                     if (_treeType == 1)                     {                         orgId = (long)cameraInfo.ORG_ID.Value;                     }                     if (_treeType == 2)                     {                         orgId = (long)cameraInfo.KeyUnit;                     }                     if (_treeType == 3)                     {                         if (!string.IsNullOrWhiteSpace(cameraInfo.Street))                         {                             PtOrgInfo orgInfo;                             if (dictOrgListAllByOrgName.TryGetValue(cameraInfo.Street, out orgInfo))                             {                                 orgId = orgInfo.id;                             }                         }                     }                     if (_treeType == 5)                     {                         orgId = (long)cameraInfo.ORG_ID.Value;                     }                 }                  if (orgId > 0)                 {                     if (dictCameraCount.ContainsKey(orgId))                     {                         dictCameraCount[orgId]++;                     }                     else                     {                         dictCameraCount.Add(orgId, 1);                     }                     PtOrgInfo orgInfo;                     if (dictOrgListAll.TryGetValue(orgId, out orgInfo))                     {                         action(orgInfo, dictCameraCount);                     }                 }                  if (orgId > 0 && cameraInfo.CAMERA_STATE == "1")                 {                     if (dictOnlineCameraCount.ContainsKey(orgId))                     {                         dictOnlineCameraCount[orgId]++;                     }                     else                     {                         dictOnlineCameraCount.Add(orgId, 1);                     }                     PtOrgInfo orgInfo;                     if (dictOrgListAll.TryGetValue(orgId, out orgInfo))                     {                         action(orgInfo, dictOnlineCameraCount);                     }                 }             }         }          #endregion 计算所有组织机构下的像机数          // ==== 按钮事件 ================================================================================================          #region btnReloadTree_Click 重新生成树         private void btnReloadTree_Click(object sender, RoutedEventArgs e)         {             ShowOrgCameraTree();         }         #endregion          #region btnSelectedCameras_Click 获取选择的摄像机集合         private void btnSelectedCameras_Click(object sender, RoutedEventArgs e)         {             DateTime dt = DateTime.Now;             List<PtCameraInfo> list = this.orgTree.GetSelectedCameras();             if (list.Count > 0)             {                 StringBuilder sbCameras = new StringBuilder();                 list.ForEach(item =>                 {                     sbCameras.Append("，" + item.CAMERA_NAME);                 });                 Log(sbCameras.ToString(1, sbCameras.Length - 1));                 string timeStr = DateTime.Now.Subtract(dt).TotalSeconds.ToString("0.000");                 Log("选择的摄像机总数：" + list.Count);                 Log("获取选择的摄像机集合耗时：" + timeStr + " 秒rn");             }             else             {                 Log("选择的摄像机总数：" + list.Count);             }         }         #endregion          #region btnSelectedOrgs_Click 获取选择的组织机构集合         private void btnSelectedOrgs_Click(object sender, RoutedEventArgs e)         {             DateTime dt = DateTime.Now;             List<PtOrgInfo> list = this.orgTree.GetSelectedOrgs();             if (list.Count > 0)             {                 StringBuilder sbCameras = new StringBuilder();                 list.ForEach(item =>                 {                     sbCameras.Append("，" + item.orgName);                 });                 Log(sbCameras.ToString(1, sbCameras.Length - 1));                 string timeStr = DateTime.Now.Subtract(dt).TotalSeconds.ToString("0.000");                 Log("选择的组织机构总数：" + list.Count);                 Log("获取选择的组织机构集合耗时：" + timeStr + " 秒rn");             }             else             {                 Log("选择的组织机构总数：" + list.Count);             }         }         #endregion          #region btnSearch_Click 搜索         private void btnSearch_Click(object sender, RoutedEventArgs e)         {             DateTime dt = DateTime.Now;             this.orgTree.Search(txtSearchKey.Text.Trim());             SetCameraCount(orgNodeDataListFlat, orgListAll, cameraNodeDataList); //设置摄像机在离线数量             string timeStr = DateTime.Now.Subtract(dt).TotalSeconds.ToString("0.000");             Log("搜索耗时：" + timeStr + " 秒");         }         #endregion          #region btnReloadTree_Click 重新生成树(较大数据量)         private void btnReloadTreeBigData_Click(object sender, RoutedEventArgs e)         {             ShowOrgCameraTree(true);         }         #endregion      } }