Error displaying a WinForm in Design mode with a c

Question

I have a UserControl that is part of a Class library. I reference this project from my solution. This adds a control from the referenced project to my toolbox. I add tghe control to a form. Everything looks good, I compile all and run. Perfect...

But when I close the .frm with the control on it and re-open it, I get this error. The code continues to run.

It may have something to do with namespaces. The original namespace was simply "Design" and this was ambiguous and conflicting so i decided to rename it. I think that's when my problems began.

    To prevent possible data loss before loading the designer, the following errors must be resolved:   



    2 Errors   

  Ignore and Continue   
    Why am I seeing this page?   





   Could not find type 'Besi.Winforms.HtmlEditor.Editor'. Please make sure that the assembly that contains this type is referenced. If this type is a part of your development project, make sure that the project has been successfully built using settings for your current platform or Any CPU.     




Instances of this error (1)  

1.   There is no stack trace or error line information available for this error.  


Help with this error  

Could not find an associated help topic for this error. Check Windows Forms Design-Time error list   


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   The variable 'Editor1' is either undeclared or was never assigned.     Go to code  





Instances of this error (1)  

1.   BesiAdmin frmOrder.Designer.vb Line:775 Column:1   Show Call Stack  

at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.Error(IDesignerSerializationManager manager, String exceptionText, String helpLink)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression)
at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeStatement(IDesignerSerializationManager manager, CodeStatement statement)  

Help with this error  

MSDN Help   


Forum posts about this error  

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Answer 1

In my case, I needed to build the project before the designer could see the custom object. Unfortunately, I was building 64-bit and debugging on a 32-bit computer, so it wasn't really rebuilding in the same mode. Once this was resolved, the designer was able to show my custom objects without complaint.

Answer 2

In my case, in debug mode form design can not be displayed and give errors "component reference can not be found". however in release mode everything is ok. I have changed settings of debug configuration as follows:

platform target : Any CPU

Now form design can be opened and displayed without any error in debug mode.