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
1 <asp:Repeater ID="rpt" runat="server" onitemdatabound="rep_ItemDataBound"> 2 <ItemTemplate> 3 <%#Eval("ID") %>、<%#Eval("Name") %>、<asp:Label ID="lblSex" runat="server" Text=""></asp:Label> 4 <br /> 5 </ItemTemplate> 6 </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。
1 protected void rpt_ItemDataBound(object sender, RepeaterItemEventArgs e) 2 { 3 Label lblTopicID = (Label)e.Item.FindControl("lblTopicID"); 4 lblTopicID.Text = ((TopicType)e.Item.DataItem).TopicID.ToString(); 5 6 TextBox txtTopicText = (TextBox)e.Item.FindControl("txtTopicText"); 7 txtTopicText.Text = ((TopicType)e.Item.DataItem).Name; 8 9 Label lblCreateTime = (Label)e.Item.FindControl("lblCreateTime"); 10 lblCreateTime.Text = ((TopicType)e.Item.DataItem).CreateTime.ToString(); 11 12 Label lblLastUpdateTime = (Label)e.Item.FindControl("lblLastUpdateTime"); 13 lblLastUpdateTime.Text = ((TopicType)e.Item.DataItem).LastTime.ToString(); 14 }
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。
1 protected void rpt_ItemCommand(object source, RepeaterCommandEventArgs e) 2 { 3 RepeaterItem ri = rpt.Items[e.Item.ItemIndex]; //选中行 4 Label lblTopicID = (Label)ri.FindControl("lblTopicID"); 5 TextBox txtTopicText = (TextBox)ri.FindControl("txtTopicText"); 6 LinkButton lbUpdateTopic = (LinkButton)ri.FindControl("lbUpdateTopic"); 7 8 int topicID = CommonFunc.ToInt(lblTopicID.Text.Trim()); 9 string topicName = txtTopicText.Text.Trim(); 10 11 switch (e.CommandName) 12 { 13 case "top"://置顶 14 15 break; 16 case "update"://修改 17 18 break; 19 case "del"://删除 20 21 break; 22 } 23 }
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：
1 protected void lbDeleteUser_Click(object sender, EventArgs e) 2 { 3 LinkButton lbUpdateUser = (LinkButton)sender; 4 RepeaterItem ri = (RepeaterItem)lbUpdateUser.NamingContainer; //获取当前操作的记录所在行 5 6 TextBox txtUID = (TextBox)ri.FindControl("txtUID"); //获取当前行的ID 7 Label lblCn1Account = (Label)ri.FindControl("lblCn1Account"); 8 Label lbhiddenID = (Label)ri.FindControl("lbhiddenID"); 9 10 // Do Something 11 }