form close ask for close or not

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I want to do when i close window form then ask
MessageBox.Show("Are You Sure You Want To Exit", "Warning", MessageBoxButtons.YesNo, MessageBoxIcon.Warning)

how to do it using Dispose method in designer.cs form
help me

Posted 15-Jul-12 17:23pm

kuldeepkumartak

Updated 16-Jul-12 18:50pm

Prosan

v3

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Trak4Net 16-Jul-12 0:05am

Does it need to be in the Dispose method or would it be fine to use it in the form_closing event?

3 solutions

Solution 2

This is how I typically handle it in the form_closing event. Not sure how you would handle it in dispose method since you won't know if user is closing or if system is logging off etc.

C#

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
       {
           if (e.CloseReason == CloseReason.UserClosing)
           {
              if (MessageBox.Show("Are You Sure You Want To Exit", "Warning", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == System.Windows.Forms.DialogResult.No)
              {
                e.Cancel = true;
              }
           }
           else
           {
               if (handler != null) handler.Stop(); //my background thread processing class
           }
       }

Posted 15-Jul-12 18:13pm

Trak4Net

Updated 15-Jul-12 18:15pm

v2

Solution 1

this function must be returning some value...
catch it in a variable see it's content. Like Yes and now have specific numbers assgned to them , they are also referenced using vbYes and vbNo
if(var = vbYes) then
End 'Exit that is...
End if

Posted 15-Jul-12 17:28pm

Oliver Kaunds

Comments

kuldeepkumartak 15-Jul-12 23:42pm

where is set this function?

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**JF2015** · Accepted Answer · 2012-07-15T18:15:00

You should use the FormClosing event instead. Here is a simple implementation that achieves what you need:

C#

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
  if (MessageBox.Show("Are you sure you want to close the form?", "Warning", MessageBoxButtons.YesNo) == System.Windows.Forms.DialogResult.No)
  {
            e.Cancel = true;
  }
}