public ClassA()
{
// Call outside function to get Interface B
this.InterfaceB = new ClassB();
// Set IB to have A
InterfaceB.SetIA(this);
}
public ClassA()
{
// Call outside function to get Interface B
IB interfaceB = Program.GetInsanceForIB();
// Set IB to have A
interfaceB.SetIA(this);
}