- A+
所属分类：.NET技术
自定义一个 TagHelper ViewContext 引用的空间 using Microsoft.AspNetCore.Mvc.Rendering;
[HtmlTargetElement("card")] public class CardTagHelper: TagHelper { public string Title { get; set; } public string Icon { get; set; } public string Url { get; set; } public string Tag { get; set; } [HtmlAttributeNotBound] [ViewContext] public ViewContext viewContext { get; set; } IWorkOrderService workOrderService; public CardTagHelper(IWorkOrderService workOrderService) { this.workOrderService = workOrderService; } public override void Process(TagHelperContext context, TagHelperOutput output) { output.TagName = Tag??"div"; output.TagMode = TagMode.StartTagAndEndTag; var preContent = new StringBuilder(); preContent.Append("<a>test</a>"); viewContext.ViewBag.zhangsan = Title; int count = 0; var list = workOrderService.PageFind(0, null, null, null, null, null, 0, 1, 10, out count); viewContext.ViewBag.list = list; viewContext.ViewBag.count = count; output.PreContent.SetHtmlContent(preContent.ToString()); output.PreContent.SetContent(Icon); } }
Microsoft.AspNetCore.Mvc 中也有一个 ViewContext ，注意不要引用错
前端的写法 引入名称和所在程序集 @addTagHelper CooperAdmin.CardTagHelper,CooperAdmin 这里嵌套调用 <card title="myTitle" icon="myIcon" url="redirectUrl"> @ViewBag.zhangsan <ul> @foreach (var li in ViewBag.list) { <li>@li.Id, @li.Name</li> } </ul> <card title="myTitle2" icon="myIcon2" url="redirectUrl2"> </card> </card>
生成的代码： <div>myIcon myTitle <ul> <li>6643, 苍茫的天涯是我的爱</li> <li>6642, 苍茫的天涯是我的爱</li> <li>6641, 苍茫的天涯是我的爱</li> <li>6640, 苍茫的天涯是我的爱</li> <li>6639, 苍茫的天涯是我的爱</li> <li>6638, 苍茫的天涯是我的爱</li> <li>6637, 苍茫的天涯是我的爱</li> <li>6636, 动可爱的人</li> <li>6635, 动的收</li> <li>6634, 动的收</li> </ul> <div>myIcon2 </div> </div>
