Implicit inheritance example (C#)

gistfile1.cs

void Main()
{
	var b = new B();
	Console.WriteLine(String.Format("B is A: {0}", (b is A)));
	Console.WriteLine(String.Format("B is ISoftDelete: {0}", (b is ISoftDelete)));
}

interface ISoftDelete
{
	bool IsDeleted {get; set;}
}

class A {
	public int Id {get; set;}
}

partial class B : A {
	public bool IsDeleted {get; set;}
}

partial class B : ISoftDelete {}