bootstrap adminlte教程4-4：文章管理-批量删除文件

后台管理文件列表已完成，我们下一步就要实现批量删除了。

 思路：前台用checkbo

后台使用FormCollection进行读写

但我现在还真不会FormCollection只选取checkbox的值，我会把所有的东西全读出来，不过不怕，有一个分析，如是读不出数据则不执行删除

1.前台

@*@model IEnumerable<jsdhh2.Models.CmsContent>*@
@model PagedList.IPagedList<jsdhh2.Models.CmsContent>
 @using PagedList.Mvc;
 <link href="~/Content/PagedList.css" rel="stylesheet" />

@{
	ViewBag.Title = "Index"; Layout = "~/Views/Shared/_AdminLayout.cshtml";
}

<!-- Content Header (Page header) -->
<section class="content-header">
	<h1>
		文章管理
		<small>分为超管和本人</small>
	</h1>
	<ol class="breadcrumb">
		<li><a href="#"><i class="fa fa-dashboard"></i> Level</a></li>
		<li class="active">Here</li>
	</ol>
</section>
<!--end Content Header (Page header) -->
<!-- Main content -->
<section class="content">
@using (Html.BeginForm("DelCms", "CmsContents", new { @class = "form-inline" }, FormMethod.Post))
{
	<div class="col-xs-12">	
		<div class=" ">
			<div class="panel panel-default">
				<div class="panel-heading">
				
					<a class="btn btn-primary" href="/CmsContents/Create">新建</a>
					

					<input type="submit" class="btn btn-warning" value="删除" />
				
				</div>
				<div class="panel-body">

					<div class="form-inline">
						<div class="form-group">
						 请选择栏目:	@Html.DropDownList("SeachColumnString", new SelectList(ViewBag.drolistmenu, "Value", "Text"), "请选择")							
						</div>
						<div class="form-group">
							<div class="input-group col-md-12">						
								@Html.TextBox("SearchString", "", new { @class = "form-control", @Style = "display:inline" })
								<span class="input-group-btn ">
									<input id="btnSearch" class="btn btn btn-primary" type="submit" value="搜索">  
								</span>
							</div>
						</div>
				     </div>

                 </div>
			</div>
		</div>
		
		<div class="box">
		
			<div class="box-body table-responsive no-padding">

				<table class="table">
					<tr>
						<th>
							 
						</th>
						<th>
							标题
						</th>
						<th>创建时间	 
						</th>
						
						<th>
						创建者
						</th>
						<th></th>
					</tr>

					@foreach (var item in Model)
			{
						<tr>
							<td>
								@Html.CheckBox(item.Id, false)
							</td>
							<td>
								@Html.DisplayFor(modelItem => item.Title)
							</td>	
							<td>
								@Html.DisplayFor(modelItem => item.CreatTime, "DateTimeTemplate")
							</td>
							<td>@Html.DisplayFor(modelItem => item.CreatUser)								 
							</td>
						
							 					 
							<td>
								@Html.ActionLink("修改", "Edit", new { id = item.Id }, new { @class = "btn btn-info" }) |
								@Html.ActionLink("阅读", "Details", new { id = item.Id }, new { @class = "btn btn-success" }) |
								@Html.ActionLink("删除", "Delete", new { id = item.Id }, new { @class = "btn btn-warning" })
							</td>
						</tr>
			}

				</table>
			</div>
			</div><!-- /.box -->
	</div>
}
	<!-- Main content -->
	Page @(Model.PageCount < Model.PageNumber ? 0 : Model.PageNumber) of @Model.PageCount
	@Html.PagedListPager(Model, page => Url.Action("Index",
  new { page, SeachColumnString = ViewBag.SeachColumnString, SearchString = ViewBag.SearchString }))
	
</section>

　　

 

2.后端

//	批量删除文件功能

		public ActionResult DelCms(FormCollection form)
		{
			//var cmscontents = db.CmsContents;
			//db.MenuRoles.RemoveRange(menuroles);
			var winnars = from x in form.AllKeys
						  where form[x] != "false"
						  select x;
			foreach (var id2 in winnars)

			{
				if (id2 != "selectAll")   //全选的那个不算数。那个checkbox值要去掉
				{
					var cmscontents = db.CmsContents.Find(id2);
					if (cmscontents!=null) { 
 					db.CmsContents.Remove(cmscontents);
					}
				}

			}
			
			db.SaveChanges();
			return RedirectToAction("index", "CmsContents");
		}

　　效果