ASP.NET Change Dropdown Control ID Inside Repeater Item Dynamically
Can someone tell me how I can get this to work. I want to distinguish dropdown controls inside a repeater control. I understand now about the lifecyle and how the buffer is already writen, but what are my alternatives? Here is what happens
Code File
Dim repeatTimes((TotalAdInsured - 1)) As Integer
myRepeater.DataSource = repeatTimes
myRepeater.DataBind()
Aspfile
<asp:Repeater ID="myRepeater" runat="server">
<ItemTemplate>
<asp:DropDownList ID="AdTitle<%# Container.ItemIndex %>" runat="server">
<asp:ListItem Selected="True" Value="" Text=""/>
<asp:ListItem Selected="False" Value="Miss" Text="Miss"/>
<asp:ListItem Selected="False" Value="Ms" Text="Ms"/>
<asp:ListItem Selected="False" Value="Mrs" Text="Mrs"/>
<asp:ListItem Selected="False" Value="Mr" Text="Mr"/>
<asp:ListItem Selected="False" Value="Other" Text="Other"/>
</asp:DropDownList>
</ItemTemplate>
</asp:Repeater>
Returns this error
Parser Error Message: 'AdTitle<%# Container.ItemIndex %>' is not a valid identifier.
Answer
I want to distinguish dropdown controls inside a repeater control.
You don't need to. Here's some sample code that might help you out:
Markup:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label runat="server" ID="lblMsg" Text="Click a button" />
<hr />
<asp:Repeater runat="server" ID="rptAwesome" onitemcommand="rptAwesome_ItemCommand"
>
<ItemTemplate>
<asp:Button runat="server" ID="btnAwesome"
Text='<%# "Button #" + Container.ItemIndex %>'
CommandArgument='<%# Container.DataItem %>'/><br />
</ItemTemplate>
</asp:Repeater>
</div>
</form>
</body>
</html>
Codebehind:
using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
var x = new int[] { 1, 2, 3, 4, 5 };
rptAwesome.DataSource = x;
rptAwesome.DataBind();
}
}
protected void rptAwesome_ItemCommand(object source, RepeaterCommandEventArgs e)
{
Button btnAwesome = (Button)e.CommandSource;
lblMsg.Text = string.Format("btnAwesome.ID = {0}, e.CommandArgument = {1}", btnAwesome.ID, e.CommandArgument);
}
}