Question

With a “classic” method implementation, I usually perform BeginInvoke like this:

private delegate void FooDelegate();
public void Foo()
{
  if(InvokeRequired)
  {
    BeginInvoke(new FooDelegate(Foo));
    return;
  }

  // Do what you want here
}

How to do the same thing when the method is an explicit interface member declaration? Like:

public void IFace.Foo()
{
  // Need to BeginInvoke here
}

This does not work:

private delegate void FooDelegate();
public void IFace.Foo()
{
  if(InvokeRequired)
  {
    BeginInvoke(new FooDelegate(IFace.Foo));
    return;
  }

  // Do what you want here
}

Answer 1

You have to cast this to IFace first:

var iface = (IFace)this;
BeginInvoke(new FooDelegate(iface.Foo));