关闭时显示消息框. [英] Showing Message Box while Shutting Down .

问题描述

当我单击关闭选项时，我想显示一个带有是/否"选项的消息框.应该在Windows Service的帮助下显示.

您能否为上述问题提供帮助，直接指导或提供源代码?

While I click on the turn off option, I would like show a message box with Yes/No Option. It should be shown with the help of Windows Service.

Could u pls, direct or give source code for the above problem?

推荐答案

您可以执行此操作-

在关闭之前，在代码中检查 消息框 结果

You could do this-

in your coding before shutting down check the messagebox result

DialogResult result = MessageBox.Show("Do you really want to shut down?",MessageBoxButtons.YesNoCancel,MessageBoxIcon.Question,MessageBoxDefaultButton.Button2);

if (result == DialogResult.Yes)
{
// Code for shutdown
}

Windows服务本身不支持任何UI.
最好的办法是捕获停止事件 [ ^ ]，然后启动将显示消息框的exe.

但是，如果机器已经关闭，则无论如何操作系统将关闭该消息框.

更好的方法是按照此处所述，自行处理WM_QUERYENDSESSION或WM_ENDSESSION [ ^ ].您可以

Windows service in itself does not support any UI.
The best you can do is catch the stop event[^] of the service and then launch an exe that will display a message box.

However if the machine is already shutting down, the message box will be closed by the operating system anyway.

A better approach would be to handle WM_QUERYENDSESSION or WM_ENDSESSION on your own as described here[^]. You can do

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