My problem now is I want to call and open a Windows Form in Windows
application project from a Windows Form in Class Library project.
I can call and open a Form in Windows application project from the Class
Library project by using ProjectName.ClassName, as you said. But, in this
case, the Class Library project doesn't know the Windows application project.
You have to declare your form in a Class Libarary project. Then from
another project in the solution, you need to set a reference to the
Form Class library project. Then you should be able to show your from.
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