Is it possible to declare a partial class in two projects

Question

Consider we create a partial class in Project1 and we have a Project2 that has reference to Project1 .How is it possible t

Answer 1

You can use the Extension methods that allow you to create additional methods for existing class

Answer 2

It is not possible to extend a partial class in another project. Partial is only compiler sugar. The compiler will create only one class in the resulting assembly.

Answer 3

The partial construct is only a compiler functionality, to allow a class to be spread out in several source files. The compiled class still lives in one and only one class library (dll file).

There are two ways to extend a class in another library:

• Inheritance, unless the class is sealed. This requires that the calling code handles all object instantiation to instantiate the new derived class.
• Extension methods, which makes the code look like there are new methods on that class, but that is just syntactic sugar. It won't change the class itself.

Answer 4

Partial classes cannot exist out side assembly boundaries!