Question

I want to create an alias for a funcion name in C#.

Is there any way but function overloading?

public class Test
{
    public void A()
    {
        ...
    }
}

I want to call B replace A same below.

var test = new Test();
test.B();

Answer 1

You can use an extension method

public static class Extensions 
{
    public static void B(this Test t)
    {
       t.A();
    }
}

But it is not an alias. It is a wrapper.

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EDIT
ps: I agree with the commenters on your question that we’d be able to give better answers if we knew what you really wanted to do, if we understood the problem you’re trying to solve.

I don’t really see the point of producing the above extension method.