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private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (MessageBox.Show("确定要退出嘛?", "退出确认", MessageBoxButtons.OKCancel, MessageBoxIcon.Information) != DialogResult.OK)
{
e.Cancel = true;
}
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
e.Cancel = true;
}