C#: WinForms – How to check if form is already open and bring it to the front instead open new instance

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Posted in WinForms | Tagged Add new tag, C#, WinForms | 3 Comments

on 09-01-2009 at 17:12 Dave Lowe

I think you may have to check whether or not the already-open form is minimized, and restore its state if it is prior to BringToFront().
on 21-01-2009 at 11:21 Marek Śliwiński

but often form is just in background and not minimized so BringToFront will handle all cases
on 28-01-2009 at 03:44 hashfactor

There might be a problem with this code. All inherited forms from frmOptions will also not open because “is” will return a true for them as well.

A better condition would be to compare types. Right?

http://hashfactor.wordpress.com/2009/01/28/c-check-if-a-form-is-already-opened/