c# - 在 FormClosing 事件中关闭应用程序

Question

我试图在关闭菜单表单时关闭我的应用程序。这是我的代码:

private void frmMenu_FormClosing(object sender, FormClosingEventArgs e)
{
    var result = MessageBox.Show("Do you want to close this application",
        "Alert", MessageBoxButtons.YesNo, MessageBoxIcon.Warning);
    if (result == DialogResult.Yes)
    {
        //this.Close();
        Application.Exit();
        //e.Cancel = false;
    }
    else
    {
        e.Cancel = true;
    }
}

关闭时此消息出现两次。

Answer 1

你不必再次退出，让它通过:

private void frmMenu_FormClosing(object sender, FormClosingEventArgs e)
{
    var result = MessageBox.Show("Do you want to close this application?",
        "Alert", MessageBoxButtons.YesNo, MessageBoxIcon.Warning);
    if (result == DialogResult.No)
    {
        e.Cancel = true;
    }
}