Difference between .Owner property and ShowDialog(IWin32Window owner)?

Question

I presume a winform\'s owner can be set explicitly via the .Owner property OR by passing the owner in the overloaded method ShowDialog(IWin32Window owne

Answer 1

Looking at the differences of these 2 options using Reflector, it seems that they have a slightly different implementation: box.Owner = this just assign the provided value of this to the internal owner field. However, when calling ShowDialog(IWin32Window), the implementation performs the following call, prior to assigning the value:

owner = ((Control) owner).TopLevelControlInternal;

This might result in assignment of the MDIParent.

(Note: I'm far from being an expert regarding MDI, so I might be wrong here).