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Why am I getting errors viewing my ASP.Net user controls in the Visual Studio Designer?

Hi:

I'm working with ASP.Net in Visual Studio 2010.
I've created several user controls which I include in .aspx pages.
They work fine at runtime, however I run into issues when I am in
"Design" view in Visual Studio.

I've added the following to my web.config:

    &lt;pages&gt;
      &lt;controls&gt;
        &lt;add tagPrefix="ajaxToolkit" assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" /&gt;
        &lt;add src="~/UserControls/UserControl1.ascx" namespace="" tagName="QuantityManagerUserControl" tagPrefix="ucUserControl1" /&gt;
        &lt;add src="~/UserControls/UserControl2.ascx"  namespace="" tagName="PopupUserControl" tagPrefix="ucUserControl2" /&gt;
      &lt;/controls&gt;
    &lt;/pages&gt;

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The user controls are included directly as part of the current solution.
I do not have name spaces defined for the controls.

Things are fine when I am in "Source View" of the designer.
But, when I go into design view. The controls do not render.
I get the following error message:

Error Rendering Control - UserControl1
An unhandled exception has occurred.
The 'namespace' attribute cannot be an empty string.

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I've tried adding namespaces to the controls, removing the namespace tag from the web.config file.
I still get the same errors.

What am I missing here?
What do I need to do additionally in order to view the controls in the Visual Studio designer?

Thanks,
JohnB

Nasir Razzaq

Try adding namespace in lines
<add src="~/UserControls/UserControl1.ascx" namespace="" tagName="QuantityManagerUserControl" tagPrefix="ucUserControl1" />

and use the project name as the namespace.

jxbma

ASKER

::>CodeCruiser:

I try adding the project as my namespace in the web config.
Doing so caused additional errors when I looked at page in design view.

It should be noted that I don't have an explicit namespace in my user controls.
I tried adding a namespace there and then referencing that namespace in the web.config and I got the
same errors in design view mentioned above.

Is it possible to provide/point me to a sample that actually works.

Thanks,
JB

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jxbma

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jxbma

ASKER

Nobody responded to answering this. I was able to figure it out on my own.