Solved

PlaceHolder control not working

Posted on 2006-06-17
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418 Views
Last Modified: 2008-03-10
I have a problem with a user control not working with a place holder control.   Here is my code

----- aspx file
<%@ Page Language="vb" AutoEventWireup="false" Codebehind="test1.aspx.vb" Inherits="WebApplication4.test1"%>
<%@ Register TagPrefix="cc1" Namespace="Dart.PowerWEB.LiveControls" Assembly="Dart.PowerWEB.LiveControls" %>
<%@ Reference Control="tstcontrol.ascx" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
      <HEAD>
            <title>test1</title>
            <meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
            <meta content="Visual Basic .NET 7.1" name="CODE_LANGUAGE">
            <meta content="JavaScript" name="vs_defaultClientScript">
            <meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
      </HEAD>
      <body MS_POSITIONING="GridLayout">
            <form id="Form1" method="post" runat="server">
                  <asp:PlaceHolder id="PlaceHolder1" runat="server"></asp:PlaceHolder></form>
      </body>
</HTML>
---aspx code behind
  Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'Put user code to initialize the page here
        If Not IsPostBack Then
            Dim a As tstcontrol
            a = New tstcontrol
            Me.PlaceHolder1.Controls.Add(a)


        End If
    End Sub

----user control HTML
<%@ Control Language="vb"  AutoEventWireup="false" Codebehind="tstcontrol.ascx.vb" Inherits="WebApplication4.tstcontrol" TargetSchema="http://schemas.microsoft.com/intellisense/ie5" %>
<%@ Register TagPrefix="cc1" Namespace="Dart.PowerWEB.LiveControls" Assembly="Dart.PowerWEB.LiveControls" %>
 
<P>yo yo yo yo yo</P>

There is no code behind in the web control.  When I run the app I get nothing in the aspx page in my browser.

Thanks for the help.
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Comment
Question by:Gawron3
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5 Comments
 
LVL 7

Expert Comment

by:kGenius
ID: 16928693
Remove the <%@ Register TagPrefix="cc1" Namespace="Dart.PowerWEB.LiveControls" Assembly="Dart.PowerWEB.LiveControls" %>
in your user control.
maybe this will help. You register a tag of the user control in the user control itself...

kGenius
0
 

Author Comment

by:Gawron3
ID: 16929666
Thanks for the suggestion but that didnt work...


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LVL 7

Accepted Solution

by:
kGenius earned 500 total points
ID: 16929689
Your control must be loaded I think. since you referenced your control but not Registered it

in Page_Load of your aspx page

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'Put user code to initialize the page here
        If Not IsPostBack Then
            Dim a As tstcontrol=LoadControl("txtcontrol.ascx")
            Me.PlaceHolder1.Controls.Add(a)

        End If
End Sub

The "<%@ Register TagPrefix="cc1" Namespace="Dart.PowerWEB.LiveControls" Assembly="Dart.PowerWEB.LiveControls" %>" must remain. My excuses for that one...

kGenius
0
 
LVL 7

Expert Comment

by:kGenius
ID: 16929693
LoadControl("txtcontrol.ascx") must be LoadControl("tstcontrol.ascx") (or the path where your control is)
0
 

Author Comment

by:Gawron3
ID: 16930955
Thanks a bunch for your help...:)
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