global variables question

  • Thread starter Thread starter Steve Klett
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S

Steve Klett

This is probably a commonly asked question, but I can't find a good way to
search for it, so I will ask here.

I assumed that there had to be an easy way to access a page level variable
from a user control.
IE. default.aspx has a variable "gName"
default.aspx has a user control, "Navigation"
I want to be able to access gName inside "Navigation"'s page_load

This appears to not be possible.... and it makes sense looking at the
structure.... but how are we expected to share data across classes?
Weird dumb question, but I don't get it. I can think of work arounds,
sessions, etc. But that seems like a rough solution

Hope this makes sense to someone,
Steve
 
Steve,

Not sure exactly what you're doing, but this is very doable. What language
are you using and I will give you a code sample.

Jim Cheshire, MCSE, MCSD [MSFT]
Developer Support
ASP.NET
(e-mail address removed)

This post is provided as-is with no warranties and confers no rights.

--------------------
 
hey Jim,

C#. Eager to see what have...

-SK


Jim Cheshire said:
Steve,

Not sure exactly what you're doing, but this is very doable. What language
are you using and I will give you a code sample.

Jim Cheshire, MCSE, MCSD [MSFT]
Developer Support
ASP.NET
(e-mail address removed)

This post is provided as-is with no warranties and confers no rights.

--------------------
From: "Steve Klett" <[email protected]>
Subject: global variables question
Date: Fri, 21 Nov 2003 09:48:31 -0800
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This is probably a commonly asked question, but I can't find a good way to
search for it, so I will ask here.

I assumed that there had to be an easy way to access a page level variable
from a user control.
IE. default.aspx has a variable "gName"
default.aspx has a user control, "Navigation"
I want to be able to access gName inside "Navigation"'s page_load

This appears to not be possible.... and it makes sense looking at the
structure.... but how are we expected to share data across classes?
Weird dumb question, but I don't get it. I can think of work arounds,
sessions, etc. But that seems like a rough solution

Hope this makes sense to someone,
Steve
Click to expand...
Click to expand...
 
First, a Page is a class (of course), so in order to make a "page level
variable" (which would be a Field or Property of the class) available to
another class inside that Page, it must be declared as Public, and appear
outside of any Method definitions. Then it's simply a matter of referencing
the Page class and the field or property name. Example:

Dim str As String = Page.StringFieldName

--
Kevin Spencer
..Net Developer
Microsoft MVP
Big things are made up
of lots of little things.
 
Steve,

Here is a segment of my Webform class showing the property:

public class WebForm1 : System.Web.UI.Page
{
public string testProp
{
get
{
return "Got it!";
}
}

private void Page_Load(object sender, System.EventArgs e)
{
// Some stuff in here...
}
}


Now here's the User Control code:

public abstract class WebUserControl1 : System.Web.UI.UserControl
{
protected System.Web.UI.WebControls.Label Label1;

private void Page_Load(object sender, System.EventArgs e)
{
string s = ((WebForm1)this.Page).testProp.ToString();
Label1.Text = s;
}
}


Hope that helps.

Jim Cheshire, MCSE, MCSD [MSFT]
Developer Support
ASP.NET
(e-mail address removed)

This post is provided as-is with no warranties and confers no rights.

--------------------
From: "Steve Klett" <[email protected]>
References: <[email protected]>
Click to expand...
Subject: Re: global variables question
Date: Fri, 21 Nov 2003 10:44:26 -0800
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hey Jim,

C#. Eager to see what have...

-SK


Jim Cheshire said:
Steve,

Not sure exactly what you're doing, but this is very doable. What language
are you using and I will give you a code sample.

Jim Cheshire, MCSE, MCSD [MSFT]
Developer Support
ASP.NET
(e-mail address removed)

This post is provided as-is with no warranties and confers no rights.

--------------------
From: "Steve Klett" <[email protected]>
Subject: global variables question
Date: Fri, 21 Nov 2003 09:48:31 -0800
Lines: 18
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.2800.1158
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Path:
Click to expand...
cpmsftngxa07.phx.gbl!cpmsftngxa10.phx.gbl!TK2MSFTNGXA05.phx.gbl!TK2MSFTNGP0 8
phx.gbl!tk2msftngp13.phx.gbl
Xref: cpmsftngxa07.phx.gbl microsoft.public.dotnet.framework.aspnet:191923
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet

This is probably a commonly asked question, but I can't find a good way to
search for it, so I will ask here.

I assumed that there had to be an easy way to access a page level variable
from a user control.
IE. default.aspx has a variable "gName"
default.aspx has a user control, "Navigation"
I want to be able to access gName inside "Navigation"'s page_load

This appears to not be possible.... and it makes sense looking at the
structure.... but how are we expected to share data across classes?
Weird dumb question, but I don't get it. I can think of work arounds,
sessions, etc. But that seems like a rough solution

Hope this makes sense to someone,
Steve
Click to expand...
Click to expand...
Click to expand...
 
this is cool, I just wasn't thinking about it correct I guess.
Thanks a lot for the example! ;)

-Steve
Jim Cheshire said:
Steve,

Here is a segment of my Webform class showing the property:

public class WebForm1 : System.Web.UI.Page
{
public string testProp
{
get
{
return "Got it!";
}
}

private void Page_Load(object sender, System.EventArgs e)
{
// Some stuff in here...
}
}


Now here's the User Control code:

public abstract class WebUserControl1 : System.Web.UI.UserControl
{
protected System.Web.UI.WebControls.Label Label1;

private void Page_Load(object sender, System.EventArgs e)
{
string s = ((WebForm1)this.Page).testProp.ToString();
Label1.Text = s;
}
}


Hope that helps.

Jim Cheshire, MCSE, MCSD [MSFT]
Developer Support
ASP.NET
(e-mail address removed)

This post is provided as-is with no warranties and confers no rights.

--------------------
From: "Steve Klett" <[email protected]>
References: <[email protected]>
Click to expand...
Subject: Re: global variables question
Date: Fri, 21 Nov 2003 10:44:26 -0800
Lines: 66
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.2800.1158
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165
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NNTP-Posting-Host: 190.muaa.sttl.sttwa01r1.dsl.att.net 12.102.48.190
Path:
Click to expand...
cpmsftngxa07.phx.gbl!cpmsftngxa06.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP12.
phx.gbl
Xref: cpmsftngxa07.phx.gbl microsoft.public.dotnet.framework.aspnet:191939
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet

hey Jim,

C#. Eager to see what have...

-SK


Jim Cheshire said:
Steve,

Not sure exactly what you're doing, but this is very doable. What language
are you using and I will give you a code sample.

Jim Cheshire, MCSE, MCSD [MSFT]
Developer Support
ASP.NET
(e-mail address removed)

This post is provided as-is with no warranties and confers no rights.

--------------------
From: "Steve Klett" <[email protected]>
Subject: global variables question
Date: Fri, 21 Nov 2003 09:48:31 -0800
Lines: 18
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.2800.1158
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165
Message-ID: <[email protected]>
Newsgroups: microsoft.public.dotnet.framework.aspnet
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Path:
Click to expand...
cpmsftngxa07.phx.gbl!cpmsftngxa10.phx.gbl!TK2MSFTNGXA05.phx.gbl!TK2MSFTNGP0
8
phx.gbl!tk2msftngp13.phx.gbl
Xref: cpmsftngxa07.phx.gbl microsoft.public.dotnet.framework.aspnet:191923
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet

This is probably a commonly asked question, but I can't find a good
Click to expand...
way
to
search for it, so I will ask here.

I assumed that there had to be an easy way to access a page level variable
from a user control.
IE. default.aspx has a variable "gName"
default.aspx has a user control, "Navigation"
I want to be able to access gName inside "Navigation"'s page_load

This appears to not be possible.... and it makes sense looking at the
structure.... but how are we expected to share data across classes?
Weird dumb question, but I don't get it. I can think of work arounds,
sessions, etc. But that seems like a rough solution

Hope this makes sense to someone,
Steve
Click to expand...
Click to expand...
Click to expand...
 
OK, so we have access to Page members from inside user control classes. I
must have screwed up or been confused on something, cause that makes sense.
Thanks for the explanation!

-Steve
 
Well, I'm still having trouble.

In my page class, I have defined a public string name "llocation";

inside a user control Page_Load event I tried to access the member with
Page.location

I get compiler errors.
C:\Inetpub\wwwroot\NTSdirect_1\controls\Support_Options.ascx.cs(23):
'System.Web.UI.Page' does not contain a definition for 'location'

I'm still missing how this should be possible.


-SK
 
No problem, Steve.

Jim Cheshire, MCSE, MCSD [MSFT]
Developer Support
ASP.NET
(e-mail address removed)

This post is provided as-is with no warranties and confers no rights.

--------------------
From: "Steve Klett" <[email protected]>
References: <[email protected]>
Click to expand...
<[email protected]>
Subject: Re: global variables question
Date: Fri, 21 Nov 2003 14:35:21 -0800
Lines: 145
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Xref: cpmsftngxa07.phx.gbl microsoft.public.dotnet.framework.aspnet:192001
X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet

this is cool, I just wasn't thinking about it correct I guess.
Thanks a lot for the example! ;)

-Steve
Jim Cheshire said:
Steve,

Here is a segment of my Webform class showing the property:

public class WebForm1 : System.Web.UI.Page
{
public string testProp
{
get
{
return "Got it!";
}
}

private void Page_Load(object sender, System.EventArgs e)
{
// Some stuff in here...
}
}


Now here's the User Control code:

public abstract class WebUserControl1 : System.Web.UI.UserControl
{
protected System.Web.UI.WebControls.Label Label1;

private void Page_Load(object sender, System.EventArgs e)
{
string s = ((WebForm1)this.Page).testProp.ToString();
Label1.Text = s;
}
}


Hope that helps.

Jim Cheshire, MCSE, MCSD [MSFT]
Developer Support
ASP.NET
(e-mail address removed)

This post is provided as-is with no warranties and confers no rights.

--------------------
From: "Steve Klett" <[email protected]>
References: <[email protected]>
Click to expand...
Subject: Re: global variables question
Date: Fri, 21 Nov 2003 10:44:26 -0800
Lines: 66
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.2800.1158
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165
Message-ID: <#J#[email protected]>
Newsgroups: microsoft.public.dotnet.framework.aspnet
NNTP-Posting-Host: 190.muaa.sttl.sttwa01r1.dsl.att.net 12.102.48.190
Path:
Click to expand...
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