The base class ‘Microsoft.Dexterity.Shell.DexUIForm’ could not be loaded

Posted on by RavinS

Hi,

I am creating a new GP Addin using Visual Studio 2022. After creating the project, set the framework, then add a form. Now I am trying to open the form in design mode but it not allowing me. I have all the relevant dll. I would like to know if there is a workaround or it my machine.

Error:

The designer could not be shown for this file because none of the classes within it can be designed. The designer inspected the following classes in the file: DynamicsGPForm1 --- The base class 'Microsoft.Dexterity.Shell.DexUIForm' could not be loaded. Ensure the assembly has been referenced and that all projects have been built.