[Mono-list] Repeaters

Simon Cunningham simon@pangomedia.com
Thu, 04 Mar 2004 11:57:30 -0900 

This is my first post to this mailing list, so please tell me if this in 
not the most appropriate place to ask this question.

I have scoured the net for information regarding this problem, but have 
come up empty.  Maybe somebody here has some insight into this problem.
 
I have some C# code that creates a Repeater and then assigns a template 
to it.  This works as documented under IIS, but doesn't work at all 
under Mono.  Here is ther error I get:
 
System.NullReferenceException: A null value was found where an object 
instance was required
in <0x0007e> System.Web.UI.TemplateControl:GetTypeFromControlPath (string)
in <0x0001d> System.Web.UI.TemplateControl:LoadTemplate (string)
in <0x00356> Pangomedia.Sitechunk.Page:Render 
(System.Web.UI.HtmlTextWriter)
in <0x0001c> System.Web.UI.Control:RenderControl 
(System.Web.UI.HtmlTextWriter)
in <0x000de> System.Web.UI.Control:RenderChildren 
(System.Web.UI.HtmlTextWriter)
in <0x00011> System.Web.UI.Control:Render (System.Web.UI.HtmlTextWriter)
in <0x0344e> Pangomedia.Sitechunk.Controller:Render 
(System.Web.UI.HtmlTextWriter)
in <0x0001c> System.Web.UI.Control:RenderControl 
(System.Web.UI.HtmlTextWriter)
in <0x000de> System.Web.UI.Control:RenderChildren 
(System.Web.UI.HtmlTextWriter)
in <0x00011> System.Web.UI.Control:Render (System.Web.UI.HtmlTextWriter)
in <0x0001c> System.Web.UI.Control:RenderControl 
(System.Web.UI.HtmlTextWriter)
in <0x0041f> System.Web.UI.Page:InternalProcessRequest ()
in <0x0008f> System.Web.UI.Page:ProcessRequest (System.Web.HttpContext)
in <0x00186> .ExecuteHandlerState:Execute ()
in <0x00084> .StateMachine:ExecuteState 
(System.Web.HttpApplication/IStateHandler,bool&)
 
It appears that System.Web.UI.TemplateControl.GetTypeFromControlPath is 
returning a null value (called from LoadTemplate()).
 
Here is the code used:
 
foo.aspx:
<%@ Page validateRequest="false" language="C#" Debug="true" %>
<%@ register tagprefix="MN" namespace="My.Namespace" assembly="Foo" %>
<MN:Foo id="some_id" runat="server" />
 
Foo.cs:
using System;
using System.Collections;
using System.Web;
using System.Web.UI.WebControls;
                           
namespace My.Namespace {
   public class Foo: System.Web.UI.Page {
      System.Web.UI.HtmlTextWriter writer;
      public Foo() {
        ArrayList list = new ArrayList();
        list.Add("foo");
        Repeater rpt = new Repeater();
        rpt.ItemTemplate = LoadTemplate("bar.ascx");
        rpt.DataSource = list;
        rpt.DataBind();
        Controls.Add(rpt);
        base.Render(writer);
      }
   }
}
                                                                        
         
bar.ascx
<%@ Control Language="C#" %>
<html>
<head>
</head>
<body>
This is bar.ascx
</body>
</html>
 
 
Ideas, anyone?