Two Winforms. One in Fullscreen, the other one in Normal Size. How can I prevent clicking on the fullscreen form to hide the other form?

Question

So, I've got two Winforms. One is in fullscreen and the other one is in the normal size. The second comes over the first. It is something like this:

The problem is, when I click the form in fullscreen, the form that looks like a Message Box will hide. How can I prevent this?

You should open the second form as a Modal Form or as a Modal Dialog. — Peter B, Nov 02 '17 at 15:11
Call ``ShowDialog`` instead of ``Show`` https://msdn.microsoft.com/en-us/library/c7ykbedk(v=vs.110).aspx — Rand Random, Nov 02 '17 at 15:13
I didn't know what a modal form is, so I probably wouldn't get to that question. The thing with ShowDialog did it :) Thanks! — , Nov 02 '17 at 15:15
This doesn't require the ShowDialog() hammer, setting the Owner is enough to ensure it stays on top and gets minimized along with the main window. — Hans Passant, Nov 02 '17 at 15:43

score 0 · Answer 1 · answered Nov 02 '17 at 15:15

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When showing the child window or form you have to use ShowDialog()

Form childForm = new Form();
childForm.ShowDialog(this);

Assuming that childForm is the small window and this is the parent form.

answered Nov 02 '17 at 15:15

Hussein Salman

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score 0 · Answer 2 · answered Nov 02 '17 at 15:16

As Peter B mentioned in his comment, you'll want to make the new non-fullscreen window a Modal Dialog. This will make the smaller window behave as a dialog box of the bigger one (if the smaller is created from the bigger one). You can use ShowDialog instead of Showas Rand Random suggested.

score 0 · Answer 3 · answered Nov 02 '17 at 15:16

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Open your normal form like below :

Form f = new Form();
f.ShowDialog(this);

answered Nov 02 '17 at 15:16

Md. Suman Kabir

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Two Winforms. One in Fullscreen, the other one in Normal Size. How can I prevent clicking on the fullscreen form to hide the other form?

3 Answers3