表单关闭时的MessageBox [英] MessageBox on Form Closing

问题描述

在关闭应用程序之前，我正在使用此代码进行提问，但它无法正常工作.
我的代码如下.

I'm use this code for question before closing the application, but it is not working correctly.
My code is as below.

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
   DialogResult dlgresult = MessageBox.Show("Exit or no?",
                               "My First Application",
                               MessageBoxButtons.YesNo,
                               MessageBoxIcon.Information);
   if (dlgresult == DialogResult.No)
   {
      e.Cancel = true;

   }
   else
   {
     Application.Exit();
   }
}

推荐答案

您无需显式调用Application.Exit()，因为您处于FormClosing事件中，这意味着关闭请求已触发(例如，单击交叉在表单按钮this.Close()上).您只需要拦截关闭请求并指出e.Cancel = true;

You don't need to explicitly call Application.Exit() since you are in the FormClosing event which means the Closing request has been triggered(e.g. click on the cross at the form button, this.Close()). You just need to intercept the closing request and indicate e.Cancel = true;

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    if(MessageBox.Show("Exit or no?",
                       "My First Application",
                        MessageBoxButtons.YesNo,
                        MessageBoxIcon.Information) == DialogResult.No) {
        e.Cancel = true;
    }
}

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