Question

C#窗口程序，如何在窗口关闭时弹出警告对话框！

次对话框的功能（1）当我点击“取消”时，此窗口不关闭（2）当我点击“确定”时，窗口关闭！

Answer 1

string message = "要关闭窗口？";
string caption = "提示";
MessageBoxButtons buttons = MessageBoxButtons.YesNo;
DialogResult result; // Displays the MessageBox. result = MessageBox.Show(this, message, caption, buttons,
MessageBoxIcon.Question); if (result == DialogResult.No)
{ // Closes the parent form. this.Close(); }

Answer 2

给窗体加FormClosing事件 private void Form6_FormClosing(object sender, FormClosingEventArgs e)
{
if (MessageBox.Show("是否退出?", "", MessageBoxButtons.YesNo) == DialogResult.No)
e.Cancel = true;
}