C#:如何 - 接受新参数的单实例应用程序? [英] C# : how to - single instance application that accepts new parameters?

问题描述

我正在创建一个使用 NZB 文件下载二进制文件的 (C#) 程序，我的应用程序在任何时候都可能只有一个实例在运行.

I'm creating a (C#) program that downloads binaries using NZB files, there may only be one instance of my application running at any time.

因此，当用户双击 .nzb 文件并且我的程序没有运行时，它应该启动并处理它(简单，文件注册).现在，如果我的程序已经在运行，我不想启动第二个实例 - 我希望已经运行的实例获取指定的文件.

So when a user doubleclicks an .nzb-file and my program is not running, it should start and process it (easy, file registration). Now if my program is already running, I do NOT want to launch a second instance - I want the already-running instance to pick up the specified file.

可以使用带有 .IsSingleInstance 技巧的 Visual Basic DLL 使我的应用程序成为单实例，但我不想去那里.

Making my app single-instance can be done using the Visual Basic DLL with the .IsSingleInstance trick, but I don't want to go there.

正确的方法似乎是使用互斥锁来确保我的应用程序是单实例的，但现在我被困在如何将指定的参数(.nzb 文件)传递给已经运行的实例.

The right way seems to be to use a mutex to ensure my app is single-instance, but now I'm stuck on how to pass the specified parameter (the .nzb file) to the already-running instance.

帮助将不胜感激！:-)

Help would be appreciated ! :-)

推荐答案

试试这个:你的主程序创建一个命名管道或其他进程间通信设施并监听它.您创建了一个单独的小程序，当以 NZB 文件作为参数运行时，它会打开管道，将文件信息输入其中，然后退出.然后，您的主程序会处理新文件并下载它.

Try this: Your main program creates a named pipe or other interprocess communication facility and listens on it. You create a separate small program that, when run with an NZB file as a parameter, opens the pipe, feeds the file info into it, and exits. Your main program then processes the new file and downloads it.

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