How can I do this?

Hello,

I know that I can do this:

<asp:Label runat="server" ID="test" text='<%# Eval("a_field") %>'

></asp:Label>

but how can I do this:

<asp:Label runat="server" ID="test" text='<%# GetAString()%>' ></asp:Label>

where GetAString() is a C# function returning a string (sample as follow):

public static string GetSString()

{

return "test";

}

when I add the above line to my aspx page, I am not getting any error, but
nothing for label is shown when it should show test.

Any suggestion on what is the problem?

Regards

Sep 15 '08 #1

Subscribe Reply

1042

Hans Kesting

m.a explained on 15-9-2008 :

Hello,

I know that I can do this:

<asp:Label runat="server" ID="test" text='<%# Eval("a_field") %>'
></asp:Label>

but how can I do this:

<asp:Label runat="server" ID="test" text='<%# GetAString()%>' ></asp:Label>

where GetAString() is a C# function returning a string (sample as follow):

public static string GetSString()

{

return "test";

}

when I add the above line to my aspx page, I am not getting any error, but
nothing for label is shown when it should show test.

Any suggestion on what is the problem?

Regards

<asp:Label runat="server" ID="test" text='<%= GetAString()%>' />

use "%=" instead of "%#"

Hans Kesting

Sep 15 '08 #2

m.a

"Hans Kesting" <ne*********@sp amgourmet.comwr ote in message
news:uR******** ******@TK2MSFTN GP05.phx.gbl...

m.a explained on 15-9-2008 :
>Hello,

I know that I can do this:

<asp:Label runat="server" ID="test" text='<%# Eval("a_field") %>'
> ></asp:Label>

but how can I do this:

<asp:Label runat="server" ID="test" text='<%# GetAString()%>'
> ></asp:Label>

where GetAString() is a C# function returning a string (sample as
follow):

public static string GetSString()

{

return "test";

}

when I add the above line to my aspx page, I am not getting any error,
but nothing for label is shown when it should show test.

Any suggestion on what is the problem?

Regards

<asp:Label runat="server" ID="test" text='<%= GetAString()%>' />

use "%=" instead of "%#"

Hans Kesting

Thanks, but it doesn't work.

I created a new project in MSVS2008 and the default.aspx is :

<%@ Page Language="C#" AutoEventWireup ="true" CodeBehind="Def ault.aspx.cs"
Inherits="WebAp plication1._Def ault" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">

<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<div>

<asp:Label runat="server" ID="test" text='<%= GetAString()%>' />

</div>

</form>

</body>

</html>

And the default.aspx.cs is as follow:

using System;

using System.Collecti ons.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.W ebControls;

namespace WebApplication1

{

public partial class _Default : System.Web.UI.P age

{

protected void Page_Load(objec t sender, EventArgs e)

{

}

protected string GetAString()

{

return "test";

}

}

but when I run the application, the result is a blank page.

any suggestion?

Regards

Sep 15 '08 #3

=?Utf-8?B?YnJ1Y2UgYmFya2Vy?=

for a data binding expression to be evaluated, you still need to call
DataBind().

-- bruce (sqlwork.com)
"m.a" wrote:

>
Hello,

I know that I can do this:

<asp:Label runat="server" ID="test" text='<%# Eval("a_field") %>'
></asp:Label>

but how can I do this:

<asp:Label runat="server" ID="test" text='<%# GetAString()%>' ></asp:Label>

where GetAString() is a C# function returning a string (sample as follow):

public static string GetSString()

{

return "test";

}

when I add the above line to my aspx page, I am not getting any error, but
nothing for label is shown when it should show test.

Any suggestion on what is the problem?

Regards

Sep 15 '08 #4

m.a

Thanks,
But it is not a databinding expression. I also add the databind() to the
form_load but no difference, (with the refrence to the codes that I send
with my second post.

Regards

"bruce barker" <br*********@di scussions.micro soft.comwrote in message
news:BB******** *************** ***********@mic rosoft.com...

for a data binding expression to be evaluated, you still need to call
DataBind().

-- bruce (sqlwork.com)
"m.a" wrote:

>>
Hello,

I know that I can do this:

<asp:Label runat="server" ID="test" text='<%# Eval("a_field") %>'
> ></asp:Label>

but how can I do this:

<asp:Label runat="server" ID="test" text='<%# GetAString()%>'
> ></asp:Label>

where GetAString() is a C# function returning a string (sample as
follow):

public static string GetSString()

{

return "test";

}

when I add the above line to my aspx page, I am not getting any error,
but
nothing for label is shown when it should show test.

Any suggestion on what is the problem?

Regards

Sep 15 '08 #5

Mark Rae [MVP]

"m.a" <ma.@spamoff.co mwrote in message
news:u2******** *****@TK2MSFTNG P05.phx.gbl...

>><asp:Label runat="server" ID="test" text='<%# GetAString()%>'
></asp:Label>

<asp:Label runat="server" ID="test" text='<%= GetAString()%>' />

use "%=" instead of "%#"

Thanks, but it doesn't work.

I created a new project in MSVS2008 and the default.aspx is :

protected string GetAString()

Are you sure that your code-behind function is being called? Put a
breakpoint in it to check...
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

Sep 15 '08 #6

m.a

"Mark Rae [MVP]" <ma**@markNOSPA Mrae.netwrote in message
news:e5******** ******@TK2MSFTN GP05.phx.gbl...

"m.a" <ma.@spamoff.co mwrote in message
news:u2******** *****@TK2MSFTNG P05.phx.gbl...

>>><asp:Label runat="server" ID="test" text='<%# GetAString()%>'
></asp:Label>
<asp:Label runat="server" ID="test" text='<%= GetAString()%>' />

use "%=" instead of "%#"

Thanks, but it doesn't work.

I created a new project in MSVS2008 and the default.aspx is :

protected string GetAString()

Are you sure that your code-behind function is being called? Put a
breakpoint in it to check...
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

No it is not called? But I don't know why? What is wrong in my code?

Sep 15 '08 #7

Jonathan Wood

protected string GetAString()

{
return "test";
}

Try this instead:

protected void GetAString()
{
Response.Write( "test");
}

--
Jonathan Wood
SoftCircuits Programming
http://www.softcircuits.com

"m.a" <ma.@spamoff.co mwrote in message
news:u2******** *****@TK2MSFTNG P05.phx.gbl...

>
"Hans Kesting" <ne*********@sp amgourmet.comwr ote in message
news:uR******** ******@TK2MSFTN GP05.phx.gbl...
>m.a explained on 15-9-2008 :
>>Hello,

I know that I can do this:

<asp:Label runat="server" ID="test" text='<%# Eval("a_field") %>'
></asp:Label>

but how can I do this:

<asp:Label runat="server" ID="test" text='<%# GetAString()%>'
></asp:Label>

where GetAString() is a C# function returning a string (sample as
follow):

public static string GetSString()

{

return "test";

}

when I add the above line to my aspx page, I am not getting any error,
but nothing for label is shown when it should show test.

Any suggestion on what is the problem?

Regards

<asp:Label runat="server" ID="test" text='<%= GetAString()%>' />

use "%=" instead of "%#"

Hans Kesting

Thanks, but it doesn't work.

I created a new project in MSVS2008 and the default.aspx is :

<%@ Page Language="C#" AutoEventWireup ="true" CodeBehind="Def ault.aspx.cs"
Inherits="WebAp plication1._Def ault" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">

<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<div>

<asp:Label runat="server" ID="test" text='<%= GetAString()%>' />

</div>

</form>

</body>

</html>

And the default.aspx.cs is as follow:

using System;

using System.Collecti ons.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.W ebControls;

namespace WebApplication1

{

public partial class _Default : System.Web.UI.P age

{

protected void Page_Load(objec t sender, EventArgs e)

{

}
}

but when I run the application, the result is a blank page.

any suggestion?

Regards

Sep 15 '08 #8

m.a

It is not working since the function never called.

"Jonathan Wood" <jw***@softcirc uits.comwrote in message
news:Or******** *****@TK2MSFTNG P05.phx.gbl...

>protected string GetAString()
{
return "test";
}

Try this instead:

protected void GetAString()
{
Response.Write( "test");
}

--
Jonathan Wood
SoftCircuits Programming
http://www.softcircuits.com

"m.a" <ma.@spamoff.co mwrote in message
news:u2******** *****@TK2MSFTNG P05.phx.gbl...
>>
"Hans Kesting" <ne*********@sp amgourmet.comwr ote in message
news:uR******* *******@TK2MSFT NGP05.phx.gbl.. .
>>m.a explained on 15-9-2008 :
Hello,

I know that I can do this:

<asp:Label runat="server" ID="test" text='<%# Eval("a_field") %>'
></asp:Label>

but how can I do this:

<asp:Label runat="server" ID="test" text='<%# GetAString()%>'
></asp:Label>

where GetAString() is a C# function returning a string (sample as
follow):

public static string GetSString()

{

return "test";

}

when I add the above line to my aspx page, I am not getting any error,
but nothing for label is shown when it should show test.

Any suggestion on what is the problem?

Regards

<asp:Label runat="server" ID="test" text='<%= GetAString()%>' />

use "%=" instead of "%#"

Hans Kesting

Thanks, but it doesn't work.

I created a new project in MSVS2008 and the default.aspx is :

<%@ Page Language="C#" AutoEventWireup ="true"
CodeBehind="De fault.aspx.cs" Inherits="WebAp plication1._Def ault" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">

<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server">

<div>

<asp:Label runat="server" ID="test" text='<%= GetAString()%>' />

</div>

</form>

</body>

</html>

And the default.aspx.cs is as follow:

using System;

using System.Collecti ons.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.W ebControls;

namespace WebApplication1

{

public partial class _Default : System.Web.UI.P age

{

protected void Page_Load(objec t sender, EventArgs e)

{

}
}

but when I run the application, the result is a blank page.

any suggestion?

Regards

Sep 15 '08 #9

=?Utf-8?B?YnJ1Y2UgYmFya2Vy?=

but it is a databinding expression, even it if does not access the databound
object. call DataBind() on the label, when you wnat the evaluation to take
effect.

Databinding expressions are pretty simple, when the page is compiled, if a
control has a databinding expression (property = "<%# expr() %>") then the
equalivent to following code is generated (actually ondatabinding fires an
event to call a delegate, instead of calling the code direct) :

OnDataBinding(E vaneArg e)
{
property = expr();
}

-- bruce (sqlwork.com)
"m.a" wrote:

Thanks,
But it is not a databinding expression. I also add the databind() to the
form_load but no difference, (with the refrence to the codes that I send
with my second post.

Regards

"bruce barker" <br*********@di scussions.micro soft.comwrote in message
news:BB******** *************** ***********@mic rosoft.com...
for a data binding expression to be evaluated, you still need to call
DataBind().

-- bruce (sqlwork.com)
"m.a" wrote:

>
Hello,

I know that I can do this:

<asp:Label runat="server" ID="test" text='<%# Eval("a_field") %>'
></asp:Label>

but how can I do this:

<asp:Label runat="server" ID="test" text='<%# GetAString()%>'
></asp:Label>

where GetAString() is a C# function returning a string (sample as
follow):

public static string GetSString()

{

return "test";

}

when I add the above line to my aspx page, I am not getting any error,
but
nothing for label is shown when it should show test.

Any suggestion on what is the problem?

Regards

Sep 15 '08 #10

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