private void HandleSomeReturnValue(SomeRetrunValueClass theValue)
 {
     textBox1.Text = theValue.A.ToString();
     textBox2.Text = theValue.B.ToString();
     textBox3.Text = theValue.C;
 }
 void ISomeCallbackInterface.TheActualCallback(SomeRetrunValueClass theValueReturnedToTheCallback)
 {
     HandleSomeReturnValue(theValueReturnedToTheCallback);
 }