点击退出时需要确认 #winform

confirmExit.cs

private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
{
if (MessageBox.Show("是否确认退出程序？", "退出", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
{
// 关闭所有的线程
this.Dispose();
this.Close();
}
else
e.Cancel = true;
}