How can I show MessageBox with suggestion of saving changes when I'm killing program from task manager?

Question

I'm making a program and want show MessageBox with suggestion of saving changes, when I'm trying to kill it from task manager. How can I do it?

Your form has an event handler for Form.Closing. In this event handler you receive the reason for the closing. Just handle it. You can even stop the closing. http://stackoverflow.com/questions/1623756/detect-reason-for-form-closing — Steve, May 05 '16 at 07:33
Thanks very much Steve! I tried the code that you linked me, and it's work great :) — Jam, May 05 '16 at 08:07
It works when i'm finishing program from task manager. Can i do something like this when i'm finishing a process from TM ? — Jam, May 05 '16 at 08:14

score 2 · Accepted Answer · answered May 05 '16 at 07:56

When killing an application from Task Manager you are simply terminating the application without continuing with the code. This means no more code execution. That cannot be handled.

It's like telling an employee "you are fired with immediate effect, pack and leave now" but still expect them to finish writing the application that will take 6 months to complete.

score 1 · Answer 2 · answered May 05 '16 at 07:50

1

There is NO way you can execute any code in your application when it is being Killed by operating system or user. That's why its called Killing.

answered May 05 '16 at 07:50

SᴇM

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Before downvote, please ensure that you can say otherwise. – SᴇM May 05 '16 at 07:57

score 0 · Answer 3 · answered May 05 '16 at 08:25

In your principal form you can use even FormClosing as :

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
    {

            DialogResult dialogResult = MessageBox.Show("Sure", "Some Title", MessageBoxButtons.YesNo);
            if(dialogResult == DialogResult.Yes)
            {
                //do something
            }
            else if (dialogResult == DialogResult.No)
            {
                e.Cancel=true ;
            }
     }

How can I show MessageBox with suggestion of saving changes when I'm killing program from task manager?

3 Answers3