nested partial class

Question

I want to define a nested class in a separate file to keep enclosing class simple,
I need a nested class cause I want it to be able to access private members of the
enclosing class. However I do not know how to set up namespaces.
Please can anybody help?

Answer 1

For partial classes, they must have the same fully qualified name.

myNameSpace.MyEnclosingClass.MyNestedClass and myNameSpace.MyNestedClass are two completely unrelated classes.

For the code example you provided, the first paragraph and the second paragraph are not allowed to exist at the same time. Even if allowed, their full names are still different.

If you need to use nested classes, you can add MyEnclosingClass in the third code and make it a partial class, and then put MyNestedClass in it.

namespace myNameSpace  
{  
    internal partial class MyEnclosingClass  
    {  
        internal partial class MyNestedClass { }  
    }  
}  
  
namespace myNameSpace  
{  
    internal partial class MyEnclosingClass  
    {  
        internal partial class MyNestedClass { }  
    }  
}  

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Answer 2

Partial classes allow breaking a class definition into multiple source files. all the source files must use the same namespace and class name. Also all source files must define the class as a partial.