Winform 窗体关闭事件

//窗体关闭前事件

        private void FrmMain_FormClosing(object sender, FormClosingEventArgs e)

        {

            DialogResult result = MessageBox.Show("确认退出吗？", "退出询问",

                MessageBoxButtons.OKCancel,

                MessageBoxIcon.Question);

            if(result == DialogResult.Cancel)

            {

                e.Cancel = true;

            }else

            {

                e.Cancel = false;

            }

        }

//窗体关闭前事件privatevoidFrmMain_FormClosing(object sender, FormClosingEventArgs e)
{
DialogResult result = MessageBox.Show("确认退出吗？", "退出询问",
MessageBoxButtons.OKCancel,
MessageBoxIcon.Question);
if(result == DialogResult.Cancel)
{
e.Cancel = true;
}else
{
e.Cancel = false;
}
}