C#Closing事件为何点击退出按钮不能关闭

[vc354155474]

C#Closing事件为何点击退出按钮不能关闭，我要的是那种点击退出弹出是否退出，现在点击退出不能退出。如果直接点击右上角“X”可以直接退出 而先点击退出在点击“X”才会弹出大家帮帮忙
private void button5_Click(object sender, EventArgs e)
{
this.FormClosing += new FormClosingEventHandler(Form1_FormClosing);


}

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (MessageBox.Show("是否要退出", "Application", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.No)
{
e.Cancel = true;
}

}

[EnForGrass]

  if (MessageBox.Show("您确认要退出吗？", "退出系统", MessageBoxButtons.OKCancel) == DialogResult.OK)
            {
                this.Dispose();
               // Application.Exit();
            }
            else
                e.Cancel = true;

[把最好的留到最后]

2楼正解[Quote=引用 2 楼 devmiao 的回复:]
private void button5_Click(object sender, EventArgs e)
{
this.Close();


}
[/Quote]

[xxm30]

1楼正确。楼主缺少了退出部分，只有取消！

[cnwin]

就是你的退出按钮里没有关闭窗口的代码。
看楼主的代码，似乎对程序理解有误。你的关闭按钮里注册的事件，也就是只有点了关闭按钮才会引发询问。那楼主是想点叉号不询问吗？楼主的意图最好表述清楚些。

[devmiao]

private void button5_Click(object sender, EventArgs e)
{
this.Close();


}

[ycproc]

  private void Form1_FormClosing(object sender, FormClosingEventArgs e)
  {
  if (MessageBox.Show("是否要退出", "Application", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.No)
  {
  e.Cancel = true;
  }

  }

你让别人不确定退出 然后给别人退出？

[wy811007]

2L正解 LZ只写了否按钮 没写是按钮
而且还写倒了 o(︶︿︶)o 唉

[caiqimin__]

楼主，这是我修改的程序，看看满意不
public Form1()
{
InitializeComponent();
this.FormClosing += new FormClosingEventHandler(Form1_FormClosing);
}
bool bClicked = false;
private void button1_Click(object sender, EventArgs e)
{
bClicked = true;
}

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (!bClicked)
{
e.Cancel = false;
return;
}
if (MessageBox.Show("是否要退出", "Application", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.No)
{
e.Cancel = true;
}

}

[mngzilin]

public Form1()
  {
  InitializeComponent();
  this.FormClosing += new FormClosingEventHandler(Form1_FormClosing);
  }
  private void button1_Click(object sender, EventArgs e)
  {
     this.Close();
  }

  private void Form1_FormClosing(object sender, FormClosingEventArgs e)
  {
  if (MessageBox.Show("是否要退出", "Application", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.No)
  e.Cancel = true;
 
  }

[嘴哥臭鼬]

public Form1()
{
InitializeComponent();
this.FormClosing += new FormClosingEventHandler(Form1_FormClosing);
}
private void button1_Click(object sender, EventArgs e)
{
this.Close();
}

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (MessageBox.Show("是否要退出", "Application", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.No)
e.Cancel = true;
else
base.Close();

}