User Control Strange Problem

Raed Sawalha

I created a very simple user control which contains lable and drag the
control to page

<%@ Page language="c#" Codebehind="Val idate.aspx.cs" AutoEventWireup ="false"
Inherits="Learn ing.Validate" %>
<%@ Register TagPrefix="uc1" TagName="GroupF ilesManager"
Src="GroupFiles Manager.ascx" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>Validate </title>
<meta content="Micros oft Visual Studio .NET 7.1" name="GENERATOR ">
<meta content="C#" name="CODE_LANG UAGE">
<meta content="JavaSc ript" name="vs_defaul tClientScript">
<meta content="http://schemas.microso ft.com/intellisense/ie5"
name="vs_target Schema">
</HEAD>
<body MS_POSITIONING= "GridLayout ">
<form id="Form1" method="post" runat="server">
<uc1:GroupFiles Manager id="oGroupFiles Manager"
runat="server"> </uc1:GroupFilesM anager></form>
</body>
</HTML>

in cs file i define the control object as GroupFileManage r oGroupFilesMana ger;
but when try to use a function in
oGroupFilesMana ger it null??? why

Nov 19 '05 #1

Subscribe Reply

1088

Raymond Yuen

Hi Raed Sawalha,

Try to declare it as protected member:
protected GroupFileManage r oGroupFilesMana ger;

Raymond

"Raed Sawalha" wrote:

I created a very simple user control which contains lable and drag the
control to page

<%@ Page language="c#" Codebehind="Val idate.aspx.cs" AutoEventWireup ="false"
Inherits="Learn ing.Validate" %>
<%@ Register TagPrefix="uc1" TagName="GroupF ilesManager"
Src="GroupFiles Manager.ascx" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>Validate </title>
<meta content="Micros oft Visual Studio .NET 7.1" name="GENERATOR ">
<meta content="C#" name="CODE_LANG UAGE">
<meta content="JavaSc ript" name="vs_defaul tClientScript">
<meta content="http://schemas.microso ft.com/intellisense/ie5"
name="vs_target Schema">
</HEAD>
<body MS_POSITIONING= "GridLayout ">
<form id="Form1" method="post" runat="server">
<uc1:GroupFiles Manager id="oGroupFiles Manager"
runat="server"> </uc1:GroupFilesM anager></form>
</body>
</HTML>

in cs file i define the control object as GroupFileManage r oGroupFilesMana ger;
but when try to use a function in
oGroupFilesMana ger it null??? why

Nov 19 '05 #2

Raed Sawalha

Great! it worked well....but what is the reason that I need to declare it as
protected?

"Raymond Yuen" wrote:

Hi Raed Sawalha,

Try to declare it as protected member:
protected GroupFileManage r oGroupFilesMana ger;

Raymond

"Raed Sawalha" wrote:
I created a very simple user control which contains lable and drag the
control to page

<%@ Page language="c#" Codebehind="Val idate.aspx.cs" AutoEventWireup ="false"
Inherits="Learn ing.Validate" %>
<%@ Register TagPrefix="uc1" TagName="GroupF ilesManager"
Src="GroupFiles Manager.ascx" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>Validate </title>
<meta content="Micros oft Visual Studio .NET 7.1" name="GENERATOR ">
<meta content="C#" name="CODE_LANG UAGE">
<meta content="JavaSc ript" name="vs_defaul tClientScript">
<meta content="http://schemas.microso ft.com/intellisense/ie5"
name="vs_target Schema">
</HEAD>
<body MS_POSITIONING= "GridLayout ">
<form id="Form1" method="post" runat="server">
<uc1:GroupFiles Manager id="oGroupFiles Manager"
runat="server"> </uc1:GroupFilesM anager></form>
</body>
</HTML>

in cs file i define the control object as GroupFileManage r oGroupFilesMana ger;
but when try to use a function in
oGroupFilesMana ger it null??? why

Nov 19 '05 #3

Raymond Yuen

If you declare it as "protected" member, then the ASP.NET runtime will "know"
that the control declared on your WebForm is inherited from the object
declared in its code-behind page. Otherwise, the object declared in the
code-behind will be an independent object.

Raymond

"Raed Sawalha" wrote:

Great! it worked well....but what is the reason that I need to declare it as
protected?

"Raymond Yuen" wrote:
Hi Raed Sawalha,

Try to declare it as protected member:
protected GroupFileManage r oGroupFilesMana ger;

Raymond

"Raed Sawalha" wrote:
I created a very simple user control which contains lable and drag the
control to page

<%@ Page language="c#" Codebehind="Val idate.aspx.cs" AutoEventWireup ="false"
Inherits="Learn ing.Validate" %>
<%@ Register TagPrefix="uc1" TagName="GroupF ilesManager"
Src="GroupFiles Manager.ascx" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>Validate </title>
<meta content="Micros oft Visual Studio .NET 7.1" name="GENERATOR ">
<meta content="C#" name="CODE_LANG UAGE">
<meta content="JavaSc ript" name="vs_defaul tClientScript">
<meta content="http://schemas.microso ft.com/intellisense/ie5"
name="vs_target Schema">
</HEAD>
<body MS_POSITIONING= "GridLayout ">
<form id="Form1" method="post" runat="server">
<uc1:GroupFiles Manager id="oGroupFiles Manager"
runat="server"> </uc1:GroupFilesM anager></form>
</body>
</HTML>

in cs file i define the control object as GroupFileManage r oGroupFilesMana ger;
but when try to use a function in
oGroupFilesMana ger it null??? why

Nov 19 '05 #4

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