Open a new form using button in C#

Question

Hi i'm doing a simple activity in c# . i want to open a new form2 using a button and the form1 will automatically close when i press that button .Here's My code:

        Form2 form2 = new Form2();
        form2.ShowDialog();
        this.Close();

Now i don't have idea What method will i use to close automatically the form1. Thank you..

http://stackoverflow.com/questions/13226393/show-same-form-which-was-hidden-before — andy, Nov 12 '12 at 05:37

score 4 · Answer 1 · answered Nov 12 '12 at 05:28

Wont work because the code control will halt on form2.ShowDialog();.

You will have to show form2 in a non-modal fashion:

Form2 form2 = new Form2();
form2.Show();
this.Close();

Or I guess you could fake it by hiding the form:

Form2 form2 = new Form2();
this.Visible = false;
form2.Show();
this.Visible = true;

Try both versions to see which is better in your situation. Calling ShowDialog(); will show the form as Modal causing all user mouse/keyboard input to be limited to form2 until you close it.

Edit: The Form2 must be declared as a member variable, it will go out of scope if it is decalred in the button event.

Form2 form2 = new Form2();
private void btnOK_Click(object sender, EventArgs e)
{
this.Visible = false;
form2.Show();
this.Visible = true;
}

If you want to close it off completely, use the code 1 above. — Ravi Y, Nov 12 '12 at 05:30
@Jeremy sir when i use the first code. the two form is automatically closing.? — Jay, Nov 12 '12 at 05:31

score 3 · Accepted Answer · edited May 23 '17 at 11:56

3

Instead of using this.Close(); use this.Hide() and on formclosing event of Form2 give form1.Show().

for more information go through this link (I asked this question before).

edited May 23 '17 at 11:56

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answered Nov 12 '12 at 05:30

Mr_Green

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Open a new form using button in C#

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