本文介绍了一个使用ASP.NET实现的简易文件管理器，该程序能够显示指定目录下的所有文件，并允许用户通过界面操作来删除文件。文章提供了完整的源代码示例，包括后台逻辑和前端界面配置。
程序运行效果如下图所示:
代码比较简单内容如下:
usingSystem;
usingSystem.Data;
usingSystem.Configuration;
usingSystem.Collections;
usingSystem.Web;
usingSystem.Web.Security;
usingSystem.Web.UI;
usingSystem.Web.UI.WebControls;
usingSystem.Web.UI.WebControls.WebParts;
usingSystem.Web.UI.HtmlControls;
usingSystem.IO;
publicpartialclassDefault12:System.Web.UI.Page
...{
publicTreeViewtv=newTreeView();
protectedvoidPage_Load(objectsender,EventArgse)
...{
if(!Page.IsPostBack)
...{
showTree();
}
}
protectedvoidButton1_Click(objectsender,EventArgse)
...{
foreach(TreeNodetninTreeView1.CheckedNodes)
...{
File.Delete(tn.Value);
}
}
protectedvoidshowTree()
...{
TreeView1.Nodes.Clear();
TreeNodetn;
TreeView1.Nodes.Add(newTreeNode("图片管理TreeView"));
foreach(FileInfofileinnewDirectoryInfo(Server.MapPath("~/image")).GetFiles())
...{
tn=newTreeNode(file.Name,file.FullName);
TreeView1.FindNode("图片管理TreeView").ChildNodes.Add(tn);
TreeView1.ExpandAll();
}
}
protectedvoidTreeView1_TreeNodeCheckChanged(objectsender,TreeNodeEventArgse)
...{
Response.Write("thiseventontreeview1checkchanged!");
}
protectedvoidTreeView1_SelectedNodeChanged(objectsender,EventArgse)
...{
Image1.ImageUrl=@"image/"+Path.GetFileName(TreeView1.SelectedNode.Value);
}
}
前台代码:
<%...@PageLanguage="C#"AutoEventWireup="true"CodeFile="Default12.aspx.cs"Inherits="Default12"%>
<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<htmlxmlns="http://www.w3.org/1999/xhtml">
<headrunat="server">
<title>文件管理</title>
</head>
<body>
<formid="form1"runat="server">
<div>
<asp:TreeViewID="TreeView1"runat="server"ImageSet="Msdn"NodeIndent="10"OnSelectedNodeChanged="TreeView1_SelectedNodeChanged"ShowCheckBoxes="All">
<ParentNodeStyleFont-Bold="False"/>
<HoverNodeStyleBackColor="#CCCCCC"BorderColor="#888888"BorderStyle="Solid"Font-Underline="True"/>
<SelectedNodeStyleBackColor="White"BorderColor="#888888"BorderStyle="Solid"BorderWidth="1px"
Font-Underline="False"HorizontalPadding="3px"VerticalPadding="1px"/>
<NodeStyleFont-Names="Verdana"Font-Size="8pt"ForeColor="Black"HorizontalPadding="5px"
NodeSpacing="1px"VerticalPadding="2px"/>
</asp:TreeView>
<asp:ImageID="Image1"runat="server"AlternateText="检索图片"Height="100px"Width="100px"/>
</div>
<asp:ButtonID="Button1"runat="server"OnClick="Button1_Click"Text="删除所选"/>
</form>
</body>
</html>
呵呵,一个简单的文件管理器就做好了^.^;
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