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Editorial Team
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Asked: 2026-05-18T11:58:27+00:00

There is a UserControlA which was already developed when I joined on a project.

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There is a UserControlA which was already developed when I joined on a project. It is in a Project which I will call MyProjectWeb and it’s namespace is MyProjectWeb.Common. 

namespace MyProjectWeb.Common
{
    public partial class UserControlA : System.Web.UI.UserControl
    {

...

There is another WorkFlowManager project that contains a class file which accesses this UserControl1.

MyProjectWeb.Common.UserControlA myUserControlA = (MyProjectWeb.Common.UserControlA)WizardControl.FindControl("TabContainer5$tpSomething$UserControlID");

Note: WorkFlowManager and MyProjectWeb are in the same solution.

This works completely fine. And now I want to create another UserControl which is UserControlB.

I followed the exact same thing. 

namespace MyProjectWeb.Common
{
    public partial class UserControlB : System.Web.UI.UserControl
    {

But to my surprise, I cannot create an instance of UserControlB in the same code file in WorkFlowManager. MyProjectWeb.Common namespace does not even contain a UserControlB. When I compile I get obviously get a
The type or namespace name 'UserControlB' does not exist in the namespace 'MyProjectWeb.Common' (are you missing an assembly reference?)

Why is that I can reference UserControlA but not UserControlB which are in the same namespace from the WorkFlowManager cs file? If I access the MyProjectWeb.Common namespace anywhere inside the MyProjectWeb, I can see both the user controls. Anywhere to look for errors?

I am using Visual Studio 2005 with ASP .NET 2.0

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1 Answer

  1. Editorial Team

    It would depend upon how WorkFlowManager project references MyProjectWeb dll. If both projects are in same solution, then it should have been a project reference but you need to verify it. If the reference is made to dll file then you need to see where exactly the referenced file is stored – my guess is that WorkFlowManager project is referencing a private copy of MyProjectWeb dll that obviously does not get updated when you rebuild MyProjectWeb.

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