C# WPF后台动态添加控件(经典)

<Grid>         <dxlc:LayoutControl Orientation="Vertical">             <dxlc:LayoutGroup Orientation="Horizontal" View="GroupBox">                 <dxlc:LayoutGroup.Header>                     <dxlc:LayoutItem Label="Action" Background="#FF004486" Foreground="White"/>                 </dxlc:LayoutGroup.Header>                 <dxlc:LayoutItem Label="Image Count" >                     <ComboBox SelectedIndex="{Binding ComSelectedIndex}">                         <ComboBoxItem>2</ComboBoxItem>                         <ComboBoxItem>4</ComboBoxItem>                         <ComboBoxItem>6</ComboBoxItem>                     </ComboBox>                 </dxlc:LayoutItem>                 <dxlc:LayoutItem Width="110">                     <dx:SimpleButton Content="Image Dispaly" Background="LightGray"                         cal:Message.Attach="[Event Click]=[btnAdd_Click($source,$eventArgs)]" />                 </dxlc:LayoutItem>             </dxlc:LayoutGroup>              <dxlc:LayoutGroup Orientation="Horizontal" View="GroupBox">                 <dxlc:LayoutGroup.Header>                     <dxlc:LayoutItem Label="Dispaly" Background="#FF004486" Foreground="White"/>                 </dxlc:LayoutGroup.Header>                 <UniformGrid                          cal:Message.Attach="[Event Loaded]=[UniformGrid_Loaded($source,$eventArgs)]" />             </dxlc:LayoutGroup>         </dxlc:LayoutControl>     </Grid> 

 [AddINotifyPropertyChangedInterface]     public class UniformGridViewModel : Screen, IViewModel     {         public int ComSelectedIndex { get; set; }          public UniformGrid UniformGrid;          public string[] ImageFullPath;         public void btnAdd_Click(object sender, RoutedEventArgs e)         {              UniformGrid.Children.Clear();             UniformGrid.Columns = 2;              var count = 0;             switch(ComSelectedIndex)             {                 case 0:                     count = 2;break;                 case 1:                     count = 4; break;                 case 2:                     count = 6; break;                 default: break;             }             for (int i = 0; i < count; i++)             {                 Image image = new Image();                 image.Source = LoadImageFreeze(ImageFullPath[i]);                 image.MouseLeftButtonUp += ImageClick;                 image.Name = Path.GetFileNameWithoutExtension(ImageFullPath[i]);                 image.Margin = new Thickness(5);                 UniformGrid.Children.Add(image);             }         }          public void ImageClick(object sender, MouseButtonEventArgs e)         {             var name = (sender as Image).Name;             MessageBox.Show($"当前选择的图片名称：{name}");         }         public void UniformGrid_Loaded(object sender, RoutedEventArgs e)         {             UniformGrid = (UniformGrid)sender;         }         public UniformGridViewModel()         {             DisplayName = "UniformGrid";             string imagePath =Path.Combine( AppDomain.CurrentDomain.BaseDirectory, "Images");             ImageFullPath = Directory.GetFiles(imagePath, "*.png");         }          public static BitmapImage LoadImageFreeze(string imagePath)         {             try             {                 var bitmap = new BitmapImage();                 if (File.Exists(imagePath))                 {                     bitmap.BeginInit();                     bitmap.CacheOption = BitmapCacheOption.OnLoad;                      using (Stream ms = new MemoryStream(File.ReadAllBytes(imagePath)))                     {                         bitmap.StreamSource = ms;                         bitmap.EndInit();                         bitmap.Freeze();                     }                 }                 return bitmap;             }             catch (Exception)             {                 return null;             }         }     }