Hi,
I am trying to create a User Control that is located in a seperate class
library. The User Control contains a textbox and a button.
The page generates an exception when it tries to access the code variable
that are supposed to be linked to the contained controls.
It runs fines when everything is contained in a single web form project.
What do I need to do to make it work from a class library?
Thanks,
Marcel
I used Visual Studio 2003 to create this ascx file:
<%@ Control Language="c#" AutoEventWireup ="false"
Codebehind="Web UserControl1.as cx.cs"
Inherits="WebCo ntrolLibrary1.W ebUserControl1"
TargetSchema="h ttp://schemas.microso ft.com/intellisense/ie5" %>
<asp:TextBox id="TextBox1" runat="server"> </asp:TextBox>
<asp:Button id="Button1" runat="server" Text="Button"></asp:Button>
The code behind file for the user control looks like this:
using System;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.UI.W ebControls;
using System.Web.UI.H tmlControls;
namespace WebControlLibra ry1
{
/// <summary>
/// Summary description for WebUserControl1 .
/// </summary>
public class WebUserControl1 : System.Web.UI.U serControl
{
protected System.Web.UI.W ebControls.Butt on Button1;
protected System.Web.UI.W ebControls.Text Box TextBox1;
private void Page_Load(objec t sender, System.EventArg s e)
{
// Put user code to initialize the page here
}
#region Web Form Designer generated code
override protected void OnInit(EventArg s e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeCompo nent();
base.OnInit(e);
}
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeCompo nent()
{
this.Button1.Cl ick += new System.EventHan dler(this.Butto n1_Click);
this.Load += new System.EventHan dler(this.Page_ Load);
}
#endregion
private void Button1_Click(o bject sender, System.EventArg s e)
{
}
}
}
The ASPX form looks like this:
<%@ Page language="c#" Codebehind="Web Form1.aspx.cs" AutoEventWireup ="false"
Inherits="WebAp plication1.WebF orm1" %>
<%@ Register TagPrefix="cc1" Namespace="WebC ontrolLibrary1"
Assembly="WebCo ntrolLibrary1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>WebForm1 </title>
<meta name="GENERATOR " Content="Micros oft Visual Studio .NET 7.1">
<meta name="CODE_LANG UAGE" Content="C#">
<meta name="vs_defaul tClientScript" content="JavaSc ript">
<meta name="vs_target Schema"
content="http://schemas.microso ft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING= "GridLayout ">
<form id="Form1" method="post" runat="server">
<cc1:WebUserCon trol1 id="WebUserCont rol11"
runat="server"> </cc1:WebUserCont rol1>
</form>
</body>
</HTML>
and finally the code behind file for the web form:
using System;
using System.Collecti ons;
using System.Componen tModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.Sess ionState;
using System.Web.UI;
using System.Web.UI.W ebControls;
using System.Web.UI.H tmlControls;
namespace WebApplication1
{
/// <summary>
/// Summary description for WebForm1.
/// </summary>
public class WebForm1 : System.Web.UI.P age
{
protected WebControlLibra ry1.WebUserCont rol1 WebUserControl1 1;
private void Page_Load(objec t sender, System.EventArg s e)
{
// Put user code to initialize the page here
}
#region Web Form Designer generated code
override protected void OnInit(EventArg s e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeCompo nent();
base.OnInit(e);
}
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeCompo nent()
{
this.Load += new System.EventHan dler(this.Page_ Load);
}
#endregion
}
}
