Consider we create a partial class in Project1 and we have a Project2 that has reference to Project1 .How is it possible to declare some other method of partial class in Project2 ?
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Do you want to create the partial class in Project2 with the same name you have given for partial class in Project1? – Sai Kalyan Kumar Akshinthala Dec 05 '11 at 10:45
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possible duplicate of http://stackoverflow.com/questions/309939/should-you-use-a-partial-class-across-projects – Glory Raj Dec 05 '11 at 10:51
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possible duplicate of [Partial Classes across Projects](http://stackoverflow.com/questions/2132323/partial-classes-across-projects) – nawfal Jan 12 '15 at 20:40
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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.
Anders Abel
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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.
Wouter de Kort
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You can use the Extension methods that allow you to create additional methods for existing class
Serghei
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