Repeater数据绑定和操作

Repeater使用详细指南

ASP.NET WebForm开发中尽量少用系统提供的runat="server"的服务器控件，尤其像GridView之类的“重量级”武器，自动生成的ViewState实在让人不敢恭维。但是用Repeater做数据绑定、展示以及表格记录处理还是很方便的。

如页面要实现下图效果：

绑定数据

数据可以用 <%#Eval("字段名")%> 这种形式在标签中绑定，参考之前写的文章

 <asp:Repeater ID="rpt" runat="server" onitemdatabound="rep_ItemDataBound">
     <ItemTemplate>
         <%#Eval("ID") %>、<%#Eval("Name") %>、<asp:Label ID="lblSex" runat="server" Text=""></asp:Label>
         <br />
     </ItemTemplate>
 </asp:Repeater>

也可以用另一种方式，在CodeBehind方法rpt_ItemDataBound(object sender, RepeaterItemEventArgs e)中进行数据绑定。

 protected void rpt_ItemDataBound(object sender, RepeaterItemEventArgs e)
 {
     Label lblTopicID = (Label)e.Item.FindControl("lblTopicID");
     lblTopicID.Text = ((TopicType)e.Item.DataItem).TopicID.ToString();

     TextBox txtTopicText = (TextBox)e.Item.FindControl("txtTopicText");
     txtTopicText.Text = ((TopicType)e.Item.DataItem).Name;

     Label lblCreateTime = (Label)e.Item.FindControl("lblCreateTime");
     lblCreateTime.Text = ((TopicType)e.Item.DataItem).CreateTime.ToString();

     Label lblLastUpdateTime = (Label)e.Item.FindControl("lblLastUpdateTime");
     lblLastUpdateTime.Text = ((TopicType)e.Item.DataItem).LastTime.ToString();
 }

操作每条记录

如果想对每条记录做操作（修改、删除、置顶等），可以在后台方法rpt_ItemCommand(object source, RepeaterCommandEventArgs e)中进行。

 protected void rpt_ItemCommand(object source, RepeaterCommandEventArgs e)
 {
     RepeaterItem ri = rpt.Items[e.Item.ItemIndex];    //选中行
     Label lblTopicID = (Label)ri.FindControl("lblTopicID");
     TextBox txtTopicText = (TextBox)ri.FindControl("txtTopicText");
     LinkButton lbUpdateTopic = (LinkButton)ri.FindControl("lbUpdateTopic");

     int topicID = CommonFunc.ToInt(lblTopicID.Text.Trim());
     string topicName = txtTopicText.Text.Trim();

     switch (e.CommandName)
     {
         case "top"://置顶

             break;
         case "update"://修改

             break;
         case "del"://删除

             break;
     }
 }

或者使用另一种方法，在每条记录的操作按钮事件上处理，例如：

 protected void lbDeleteUser_Click(object sender, EventArgs e)
 {
     LinkButton lbUpdateUser = (LinkButton)sender;
     RepeaterItem ri = (RepeaterItem)lbUpdateUser.NamingContainer; //获取当前操作的记录所在行

     TextBox txtUID = (TextBox)ri.FindControl("txtUID"); //获取当前行的ID
     Label lblCn1Account = (Label)ri.FindControl("lblCn1Account");
     Label lbhiddenID = (Label)ri.FindControl("lbhiddenID");

     // Do Something
 }