Question

internal partial class Class1
{
    private class Class2 : ISomething, ISomethingElse
    {
        private class Class3 : ISomething
        {

        }
    }
}

I want Class3 itself to host another private Class4, but that would make Class3 too big so I want to make Class3 partial. I know how to do that to a non-nested class. How would you make a nested class partial in a separate file?

Answer 1

This article states that it’s possible to make nested classes partial even if their parent class is not partial. But then you can’t separate them in several files, so I think you need to make Class2 partial too and split just like you would with first-level classes, keeping the partial class hierarchy.

I really hope that this question is just because of curiosity.

EDIT: Just tried this – works ok.

file1.cs

partial class c1 
{
    partial class c2 
    {
        class c3 
        {
        }
    }
}

file2.cs

partial class c1 
{
    partial class c2 
    {
    }
}