.NET1.1 upgrade, now "'System.Windows.Forms.Form' cannot be design - 06-28-2005 , 10:56 AM
I downloaded .NET 1.1, and before installing it I uninstalled .NET 1.0.
When I started Visual Studio, it couldnt find the .NET compiler. So I
uninstalled 1.1, reinstalled 1.0, and then reinstalled 1.1.
Visual Studio kept on using the .NET 1.0 DLLs. I need to use the new forms
dll, so I removed the reference to the old one and added the new one. Now
everything works fine, but when I try to edit the form in the form designer I
get this error:
An error ocurred while loading the document. Fix the error, and then try
loading the document again. The error message follows:
myform --- The base class 'System.Windows.Forms.Form' cannot be designed.
What is happening? When I go back to the old 1.0 system.windows.forms.dll
the Form Designer works again. It sounds like .NET 1.1 isnt installing
correctly, but it installs fine every time. I need some serious Microsoft
RE: .NET1.1 upgrade, now "'System.Windows.Forms.Form' cannot be design - 06-29-2005 , 01:37 PM
You didn't specify which version of Visual Studio you are using, but it
sounds like you have v7.0, which requires the .NET Framework v1.0. There
is no design-time support in v7.0 for .NET Framework 1.1; you'll have to
use Visual Studio 7.1 for that.
RE: .NET1.1 upgrade, now "'System.Windows.Forms.Form' cannot be de - 06-29-2005 , 02:29 PM
Thank you so much, that was it. I have visual basic .net version 7.
They might want to add that requirement to the 1.1 download page at
I just breezed throught the download assuming it would work. It actually
does work, I successfully used the new browseforfolder object in my visual
studio version 7, it just wouldnt let me edit the form.
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