My Page contains a DataGrid inside UpdatePanel and a Filter user control.
I want to set a trigger to the UpdatePanel which refer to a button inside the Filter user control.
I get this error:
A control with ID 'Filter1_btnGo1' could not be found for the trigger in UpdatePanel 'UpdatePanel'.
how do I make this work?
Have you tried:
UpdatePanel.FindControl()
You pass in the control ID.
If you still have a problem, supply some sample code and I'll have another look.
Here is a small and simple code example to show the problem, have a look ...
1. TestUpdatePanel.aspx
<%@. Page Language="C#" AutoEventWireup="true" CodeBehind="TestUpdatePanel.aspx.cs" Inherits="Test.TestUpdatePanel" %>
<%@. Register TagPrefix="UC" TagName="OutSideTrigger" src="http://pics.10026.com/?src=MyUserControl.ascx" %>
<script runat="server">
protected void Button1_Click(object sender, EventArgs e)
{
Label1.Text = "Refreshed at " +
DateTime.Now.ToString();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>UpdatePanel Tutorial</title>
<style type="text/css">
#UpdatePanel1 {
width:300px;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<fieldset>
<legend>UpdatePanel</legend>
<asp:Label ID="Label1" runat="server" Text="Panel created."></asp:Label><br />
</fieldset>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btn1" />
<asp:AsyncPostBackTrigger ControlID="uc1_UCButton" />
</Triggers>
</asp:UpdatePanel>
<asp:Button ID="btn1" runat="server" OnClick="Button1_Click" Text="Button" /></div>
<UC:OutSideTrigger id="uc1" runat="server"></UC:OutSideTrigger>
</form>
</body>
</html>
2. MyUserControl.ascx
<%@. Control Language="C#" AutoEventWireup="true" CodeBehind="MyUserControl.ascx.cs" Inherits="Test.MyUserControl" %>
<div style="height:50;width:400;background-color=yellow">
<asp:Button ID="UCButton" runat="server" Text="Button should triger the update panel." />
</div>
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