Close Button

[alee15 10 88]

I would like to know how to display a message box with an "Are you sure you want to exit?" when someone clicks the close button, therefore the cross button. I managed to do it in a simple button but I think it's different in the close button! Can someone help me please?! Thanks ;) Alison

[J4amieC]

subscribe to the Closing event on a form, and set the Cancel property = true on the event argument if you dont want to exit.

[Lost User]

Override the OnClosing event of your form:

this.FormClosing += new FormClosingEventHandler(OnClosing);

and use this code:

private void OnClosing(object sender, FormClosingEventArgs e)
{
DialogResult res = MessageBox.Show("Are you sure you want to close the form?",
"Question",
MessageBoxButtons.YesNoCancel,
MessageBoxIcon.Question);
if (res != DialogResult.Yes)
{
e.Cancel = true; // do not close this form
}
}

regards -- modified at 10:41 Monday 20th February, 2006

[Judah Gabriel Himango]

Greg, that isn't overriding, that is event subscription. To override, you don't need an event handler:

protected override void OnClosing(CancelEventArgs e)
{
DialogResult res = MessageBox.Show("Are you sure you want to close the form?",
"Question",
MessageBoxButtons.YesNoCancel,
MessageBoxIcon.Question);
if (res != DialogResult.Yes)
{
e.Cancel = true; // do not close this form
}
}

[alee15 10 88]

[Message Deleted]

[Lost User]

Yeah, my bad, I mixed up both things. But the code works nonetheless :-O

[Lost User]

this.FormClosing += new FormClosingEventHandler(OnClosing); This should be put into the form constructor

[alee15 10 88]

Ohh I made it, Thanks a lot people for helping me! :-D