Exit Application With X in the Form

It depends on why the program does not exit when the x does not cause it too. You do not show the code so we dont know what is causing that. A good solution might be to remove some code, not add more.

Thanks everybody. The problem has been solved with the code below.

if (e.CloseReason == CloseReason.UserClosing)
{
    if (MessageBox.Show("Are you Sure you want to Exit. Click Yes to Confirm and No to continue", "WinForm", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.No)
    {
        e.Cancel = true;
    }
    else
    {
        e.Cancel = false;
        Application.Exit();
    }
}

Thanks a lot Rajkiran Swain. This code works fine but how can we add confirm message for closing with the MessageBoxButtons.YesNo?

By setting e.Cancel to false, you indicate that it is okay to close the form and that the program should exit. If you do not set e.Cancel to false, the form will be hidden but the program will continue running in the background.

When you press the x in the upper corner of a Windows Form, it typically triggers the FormClosing event, which you can handle in your code to perform any necessary cleanup actions before the form is closed. The form is simply hidden rather than closed, which can result in your program still running in the background. To ensure that your program completely exits when the user clicks the x, you can handle the FormClosing event and set the e.Cancel property to false.

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    // Perform any necessary cleanup actions here

    // Set e.Cancel to false to allow the form to close
    e.Cancel = false;
}

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    // Check if the form is being closed by the user clicking the X button
    if (e.CloseReason == CloseReason.UserClosing)
    {
        // Terminate the application
        Application.Exit();
    }
}