Only one of a form open at a time
- Thread starter Lanc1988
- Start date
The easyest and user friendlyer way its to desable the button when the user ckick it, and re-eanble it when the for is closed...
To desable it's easy, just:
To re-enable it you must declare the form you'll show with WithEvents (in VB.net, in C# isn't necessary).
On Form1 catch the Closed Event and enable the Button...
There's a way to let the user click the damn button but this way I told you he knows he can't open it no more than once...
If you don't like to desable buttons, you can declare Form2 on a module to make it global, this way, on the button click you can evaluate if Form2 is Nothing, if so its because there's no instance created, if not then an instance is altesdy created.
WIth this last approach you can even bring From2 to the front if it's on a lower z-Order level (behind other forms)...
Alex
To desable it's easy, just:
Visual Basic:
button.enable = falseTo re-enable it you must declare the form you'll show with WithEvents (in VB.net, in C# isn't necessary).
Visual Basic:
Dim WithEvents Form2 as new FormOn Form1 catch the Closed Event and enable the Button...
There's a way to let the user click the damn button but this way I told you he knows he can't open it no more than once...
If you don't like to desable buttons, you can declare Form2 on a module to make it global, this way, on the button click you can evaluate if Form2 is Nothing, if so its because there's no instance created, if not then an instance is altesdy created.
WIth this last approach you can even bring From2 to the front if it's on a lower z-Order level (behind other forms)...
Alex