Prevent multiple instances winform

Asked Mar 16 '15 at 09:34

Active Mar 16 '15 at 09:41

Viewed 68 times

I've got three forms, Form1, Form2, Form3. I need to naviage between this 3 forms, like

From Form1 i need to open Form2 and close Form1 and I do it like this:

        Form2 myForm = new Form2(user_form1); // Initialize Form2
        this.Hide(); // hide Form1 -> This doesn't hide everytime
        this.Close(); // close Form1 -> This doesn't close everytime
        myForm.ShowDialog(); // open Form2

but sometimes Form1/Form2/Form3 doesn't want to hide and close, next Form is open but previous form is opened too ( but I can't click on it and do anything ).

What Can i do to prevent it? Any ideas?

edited Mar 16 '15 at 09:41

asked Mar 16 '15 at 09:34

Icet

3

Your question is unclear, is it `this` or `user_form1` that is appearing? I can't see how the code you have would make `this` reappear – Sayse Mar 16 '15 at 09:37
What's the .net framework you use? – Abdul Saleem Mar 16 '15 at 09:43
I asked because, for me everything gets closed when executing the above.. – Abdul Saleem Mar 16 '15 at 09:46
Better you just hide it and prevent this.close(); – Abdul Saleem Mar 16 '15 at 09:47
oops.. I've just saw you passing form2 as parameter.. Sorry – Abdul Saleem Mar 16 '15 at 09:48
then it depends upon what you're doing on the second form's constructor – Abdul Saleem Mar 16 '15 at 09:49
If you can put its code – Abdul Saleem Mar 16 '15 at 09:50
so it can depends what I'm doing with the parametr in next form? – Icet Mar 16 '15 at 09:55

Prevent multiple instances winform

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