prevent user closing the application

[alan]

Hello,

When the user try the close the application (click the top right side
button "X"), I would like to do a checking first. If the checking return
false, prevent the application terminate. Anyone know how to do it?
Thanks.

 

[Morten Wennevik]

private void Form1_Closing(object sender,
System.ComponentModel.CancelEventArgs e)
{
if(some closing condition is not met)
{
e.Cancel = true;
}
}

Beware, this will also prevent windows from being able to close it when
you shut down your computer.

 

[Krishnan]

Oh! Is there nothing like a VB:
Private Sub Form_QueryUnload(Cancel As Integer, UnloadMode As Integer)

Where 'UnloadMode' shows how the form is closing?

TIA
Krishnan
Codito Ergo Sum

private void Form1_Closing(object sender,
System.ComponentModel.CancelEventArgs e)
{
if(some closing condition is not met)
{
e.Cancel = true;
}
}

Beware, this will also prevent windows from being able to close it when
you shut down your computer.

 

[Mountain Bikn' Guy]

off topic, but...

Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/

is M2 that much better than OutlookExpress? (not that it would be too
difficult to achieve such a distinction)

 

[Jeffrey Tan[MSFT]]

Hi Krishnan,

Form_QueryUnload event is the feature of VB 6.0, while in VB.net, it is
upgraded to Closing event.
For more information about this, please refer to the link below:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcon/html/
vbup1057.asp

Best regards,
Jeffrey Tan
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.

 

[Krishnan]

Thanks Jeffrey, but the link doesn't seem to work.

Krishnan Codito Ergo Sum

 

[Jeffrey Tan[MSFT]]

Hi Krishnan,

I have tried the link, it really works.
I think you should place the 2 wrapped lines into one line:
Place
"http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcon/html
/" with "vbup1057.asp"

Best regards,
Jeffrey Tan
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.

 

[Morten Wennevik]

Not sure, never used it as an email client, but I use it as a news
reader. It seems to do fine handling tens of thousands of mails in each
group. The line is sort of a default signature and I haven't changed it
yet.