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:
<add tagPrefix="ajaxToolkit" assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" />
<add src="~/UserControls/UserControl1.ascx" namespace="" tagName="QuantityManagerUserControl" tagPrefix="ucUserControl1" />
<add src="~/UserControls/UserControl2.ascx" namespace="" tagName="PopupUserControl" tagPrefix="ucUserControl2" />
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.
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?