下面的代码可以防止对话框弹出二次的尴尬。\

///

<summary>


///
点击关闭后，停止程序

///

</summary>


///

<param name=”sender”></param>


///

<param name=”e”></param>



private

void
indexForm_FormClosed(
object
sender, FormClosedEventArgs e)
{

Application.Exit();
}

///

<summary>


///
点击关闭时询问

///

</summary>


///

<param name=”sender”></param>


///

<param name=”e”></param>



private

void
indexForm_FormClosing(
object
sender, FormClosingEventArgs e)
{


if
(MessageBox.Show(
“
是否退出系统
“
,
“
提示
“
, MessageBoxButtons.YesNo, MessageBoxIcon.Question)
==
DialogResult.No)
{

e.Cancel
=

true
;
}
}

///

<summary>


///
退出系统

///

</summary>


///

<param name=”sender”></param>


///

<param name=”e”></param>



private

void
退出系统ToolStripMenuItem_Click(
object
sender, EventArgs e)
{


if
(MessageBox.Show(
“
是否退出系统
“
,
“
提示
“
, MessageBoxButtons.YesNo, MessageBoxIcon.Question)
==
DialogResult.Yes)
{

Application.ExitThread();
}

else

{


return
;
}
}

转载于:https://www.cnblogs.com/mensaobb/archive/2011/06/28/2092036.html