Hi. I can't figure out why a button's click event is not firing in a
templated control I've created (first time I've tried creating one).
Please can someone help? On a point of lesser importance, how can I get
the designer to realise that my control can contain markup?
This is all ASP.Net v 2.0
This is my default.aspx:
Below is the source of three files: Default.aspx, Default.aspx.cs and
TemplateContain er.cs which will demonstrate the problem.
You will notice that in the btnEdit_Click event I raise a
NotImplementedE xception - this exception is never thrown. Why is the
button losing the event wireup?
TIA
Default:aspx
============
<%@ Page Language="C#" AutoEventWireup ="true"
CodeFile="Defau lt.aspx.cs" Inherits="_Defa ult" %>
<%@ Register TagPrefix="tc" Namespace="Cont rols.Templated" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitl ed Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<tc:TemplatedCo ntrol ID="tc" runat="server">
<ItemTemplate >
<asp:Button ID="btnEdit" Text="Edit" runat="server"
OnClick="btnEdi t_Click" />
</ItemTemplate>
<EditItemTempla te>
<asp:Button ID="btnCancel" Text="Cancel" runat="server"
OnClick="btnCan cel_Click" />
</EditItemTemplat e>
</tc:TemplatedCon trol>
</div>
</form>
</body>
</html>
Default.aspx.cs
===========
using System;
using System.Web.UI;
using Controls.Templa ted;
public partial class _Default : Page
{
protected void Page_Load(objec t sender, EventArgs e)
{
if (!Page.IsPostBa ck)
tc.ChangeMode(T emplateMode.Rea dOnly);
}
protected void btnEdit_Click(o bject sender, EventArgs e)
{
throw new NotImplementedE xception("Not implemented");
}
protected void btnCancel_Click (object sender, EventArgs e)
{
throw new NotImplementedE xception("Not implemented");
}
}
TemplateContain er.cs
===============
using System;
using System.Web;
using System.Web.UI;
namespace Controls.Templa ted
{
public class TemplateContain er : Control, INamingContaine r
{
private TemplatedContro l parent;
public TemplateContain er(TemplatedCon trol parent)
{
this.parent = parent;
}
public string MyValue
{
get
{
return parent.MyValue;
}
}
}
public enum TemplateMode
{
Invisible,
Edit,
Insert,
ReadOnly
}
[
ParseChildren(C hildrenAsProper ties = true),
]
public class TemplatedContro l : Control, INamingContaine r
{
private ITemplate m_itemTemplate;
private ITemplate m_editTemplate;
private string m_myValue = null;
private Control m_itemTemplateC ontainer;
private Control m_editItemTempl ateContainer;
private TemplateMode m_mode;
protected override void OnDataBinding(E ventArgs e)
{
EnsureChildCont rols();
base.OnDataBind ing(e);
}
public void ChangeMode(Temp lateMode newMode)
{
m_mode = newMode;
}
[TemplateContain er(typeof(Templ ateContainer))]
public ITemplate ItemTemplate
{
get
{
return m_itemTemplate;
}
set
{
m_itemTemplate = value;
}
}
[TemplateContain er(typeof(Templ ateContainer))]
public ITemplate EditItemTemplat e
{
get
{
return m_editTemplate;
}
set
{
m_editTemplate = value;
}
}
public string MyValue
{
get
{
return m_myValue;
}
set
{
m_myValue = value;
}
}
public Control ItemTemplateCon tainer
{
get
{
return m_itemTemplateC ontainer;
}
}
public Control EditItemTemplat eContainer
{
get
{
return m_editItemTempl ateContainer;
}
}
protected override void CreateChildCont rols()
{
if (ItemTemplate != null && m_mode ==
TemplateMode.Re adOnly)
{
m_itemTemplateC ontainer = new TemplateContain er(this);
ItemTemplate.In stantiateIn(m_i temTemplateCont ainer);
Controls.Add(m_ itemTemplateCon tainer);
}
else if (EditItemTempla te != null && m_mode ==
TemplateMode.Ed it)
{
m_editItemTempl ateContainer = new
TemplateContain er(this);
EditItemTemplat e.InstantiateIn (m_editItemTemp lateContainer);
Controls.Add(m_ editItemTemplat eContainer);
}
}
}
}
