C#：如何 - 接受新参数的单实例应用程序？
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C# : how to - single instance application that accepts new parameters?
提问by Led
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.
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。
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.
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。
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.
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。
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.
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，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。
Help would be appreciated ! :-)
帮助将不胜感激！:-)
回答by Aric TenEyck
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.
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。然后您的主程序处理新文件并下载它。
回答by RedFilter
Why not have one program that adds the file to a queue, and then kicks off the downloading program if it is not already running. That downloading program watches the queue, which is just a file that you append download file names to.
为什么不用一个程序将文件添加到队列中，然后在下载程序尚未运行时启动它。该下载程序监视队列，队列只是您将下载文件名附加到的文件。
回答by Mike Marshall
回答by Autodidact
Use an IPC (inter process communication) mechanism such as .net remoting
使用 IPC（进程间通信）机制，例如.net 远程处理
