从Windows服务打开一个对话窗口 [英] Open a dialog window from a windows service

问题描述

我已经建立在C＃中的窗口服务应用程序，弹出在特定的时间间隔一个对话窗口。虽然在Visual Studio中调试，它运作良好。然后，我创建了一个安装设置。但在安装服务后，在不触发弹出对话窗口。
会是怎样的原因以及如何解决这个问题？

I have created a windows service application in C# to popup a dialog window at particular intervals. While debugging in Visual studio, it is working well. Then I created an installation setup. But after installing the service is not firing to popup the dialog window. What will be the reason and how can I fix it?

推荐答案

在会话0中运行服务，这是从隔离在交互式桌面上。你不能从服务显示用户界面。您需要运行一个单独的桌面程序，以显示UI，然后使用IPC服务和桌面程序之间的通信。

Services run in session 0 which is isolated from the interactive desktop. You cannot show UI from a service. You need to run a separate desktop process to show the UI and then use IPC to communicate between the service and the desktop process.

如果您的对话是很简单的你可能使用 WTSSendMessage 。

If your dialog is simple enough you could possibly use WTSSendMessage.

如果你想运行定期代码，那么你可能是一个计划任务，而不是服务更好。

If you want to run code at regular intervals then you may be better off with a scheduled task rather than a service.

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