How to Call MDI Form Event in Child Form

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How to Call MDI Form Event in Child Form

Posted 5-Jan-14 23:07pm

jayeshhh

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BillWoodruff 6-Jan-14 5:30am

I agree with OriginalGriff's advice in his answer here, but I am curious to ask you why you would want an MDIChildForm to invoke an event in the MDIParentForm.

Is what you want to trigger a Click on an MDIParentForm's ToolStripMenuItem ?

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OriginalGriff · Answer 1 · 2014-01-05T23:22:00

Solution 1

You can't: events can only be invoked from the class that created them. And Child forms should not know about the MDI parent unless they really, really have to - which they rarely do. Accessing Parents is a bad idea from an OOPs POV.

Instead, create an event in the Child form to which the Parent subscribes. In teh handler, teh Parent can take whatever action it deems appropriate.
See here: Transferring information between two forms, Part 2: Child to Parent[^]

Posted 5-Jan-14 23:22pm

OriginalGriff

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BillWoodruff 6-Jan-14 6:14am

It's possible, given another question the OP asked an hour ago, that he is talking about a triggering a Click Event in an MDIParent Form's MenuStrip from a MDIChildForm. That is possible due to the strange fact that the MDIParentForm automatically exposes, in all child Forms, a MDIForm.MainMenuStrip reference.

If that's the case, and the OP takes the trouble to clarify what they are asking about, I'll demonstrate that, even though I don't like it :)

OriginalGriff 6-Jan-14 6:27am

Could be!
BTW: Your email is not ignored - I've just got back from the dentist, and I've got to take Herself shopping, so I'll reply when I get back.