显示图像取决于中继器控制中的文件类型

Question

我有一个Repeater控件来列出根文件夹中的所有子文件夹和文件。

<table border="1px solid " style="border-collapse: collapse;width: 90%;" cellspacing="3" cellpadding="3"> 
<asp:Repeater ID="Repeater1" runat="server" OnItemCommand="Repeater1_ItemCommand" 
         OnItemDataBound="Repeater1_ItemDataBound"> 

<ItemTemplate> 

    <tr> 
     <td> 
      <asp: Label ID="imagelabel"..../>// display image here 
     </td> 
     <td> 
      <asp:LinkButton ID="lnkFolder" runat="server" Text='<%# Eval("Name") %>' CommandName="Select"></asp:LinkButton> 
     </td> 
     <td> 
     <asp:LinkButton ID="LinkButton1" runat="server" Text="Delete" CommandArgument='<%# Eval("Path") +"," + Eval("Type")%>' 
              CommandName="Delete" OnClientClick="return confirm('Are you sure you want to delete?')"></asp:LinkButton> 
     </td> 
     <td> 
      <asp:LinkButton ID="LinkButton2" runat="server" Text="Edit" CommandArgument='<%# Eval("Path") + "," + Eval("Type") + "," + Eval("Name")%>' 
              CommandName="Edit"></asp:LinkButton> 
     </td> 
</tr> 
</ItemTemplate> 
</asp:Repeater> 
</table> 

在后面的代码：

private void FillFileAndFolders(string virtualDirPath) 
    { 
     DataTable filesAndFolders = new DataTable(); 
     filesAndFolders.Columns.Add("Name"); 
     filesAndFolders.Columns.Add("Path"); 
     filesAndFolders.Columns.Add("Type"); 

     string rootPath = virtualDirPath; 
     if (Directory.Exists(rootPath)) 
     { 
      string[] Directories = Directory.GetDirectories(rootPath); 
      for (int i = 0; i < Directories.Length; i++) 
      { 
       DirectoryInfo drinfo = new DirectoryInfo(Directories[i]); 
       DataRow dr = filesAndFolders.NewRow(); 
       dr["Name"] = drinfo.Name; 
       dr["Path"] = drinfo.FullName; 
       dr["Type"] = "D"; 
       filesAndFolders.Rows.Add(dr); 
      } 
      string[] files = Directory.GetFiles(rootPath); 
      for (int i = 0; i < files.Length; i++) 
      { 
       FileInfo fInfo = new FileInfo(files[i]); 
       DataRow dr = filesAndFolders.NewRow(); 
       dr["Name"] = fInfo.Name; 
       dr["Path"] = fInfo.FullName; 
       dr["Type"] = "F"; 

       filesAndFolders.Rows.Add(dr); 
      } 
     } 
     Repeater1.DataSource = filesAndFolders; 
     Repeater1.DataBind(); 
    } 

所有我想要的是：当它是一个Folder --->imagelabel.Text= "<img src='/folder.png'>";

否则当它是单个file ---->imagelabel.Text= "<img src='/file.png'>";

我已经尝试了很多时间，但似乎我无法通过中继器控制将该图像设置为imagelabel。

帮助!!!

Answer 1

您可以使用中继器控件的ItemDataBound事件。 使用您可以访问的RepeaterItem.DataItem属性获取与Repeater控件中的RepeaterItem对象关联的数据项。

类似下面应该设置Text属性：

protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e) 
{ 
    // Execute the following logic for Items and Alternating Items. 
    if (e.Item.ItemType == ListItemType.Item || 
     e.Item.ItemType == ListItemType.AlternatingItem) 
    { 
     if (((DataRowView)e.Item.DataItem).Row["Type"].ToString() == "D") 
     { 
      ((Label)e.Item.FindControl("imagelabel")).Text = "<img src='/folder.png'>"; 
     } 
     else 
     { 
      ((Label)e.Item.FindControl("imagelabel")).Text = "<img src='/file.png'>"; 
     } 
    } 
}