我可以得到其他进程的命令行参数的.NET / C＃？

问题描述

我有一个项目，我有一个应用程序运行多个实例，每个启动时使用不同的命令行参数。我希望有一种方法来点击一个按钮，从这些实例，然后关闭所有的实例之一，具有相同的命令行参数再次开始他们回来。

I have a project where I have multiple instances of an app running, each of which was started with different command line arguments. I'd like to have a way to click a button from one of those instances which then shuts down all of the instances and starts them back up again with the same command line arguments.

我可以通过获取过程本身很轻松了Process.GetProcessesByName（），但每当我做了， StartInfo.Arguments 属性始终是一个空字符串。它看起来像，也许该属性是唯一有效的启动过程之前。

I can get the processes themselves easily enough through Process.GetProcessesByName(), but whenever I do, the StartInfo.Arguments property is always an empty string. It looks like maybe that property is only valid before starting a process.

<一个href="http://stackoverflow.com/questions/440932/reading-command-line-arguments-of-another-process-win32-c-$c$c">This问题有一些建议，但他们都在本土code，我想直接从.NET做到这一点。有什么建议？

This question had some suggestions, but they're all in native code, and I'd like to do this directly from .NET. Any suggestions?

推荐答案

这是使用所有管理对象，但它确实沾下来到WMI境界：

This is using all managed objects, but it does dip down into the WMI realm:

private static void Main()
{
    foreach (var process in Process.GetProcesses())
    {
        try
        {
            Console.WriteLine(process.GetCommandLine());
        }
        catch (Win32Exception ex)
        {
            if ((uint)ex.ErrorCode != 0x80004005)
            {
                throw;
            }
        }
    }
}

private static string GetCommandLine(this Process process)
{
    var commandLine = new StringBuilder(process.MainModule.FileName);

    commandLine.Append(" ");
    using (var searcher = new ManagementObjectSearcher("SELECT CommandLine FROM Win32_Process WHERE ProcessId = " + process.Id))
    {
        foreach (var @object in searcher.Get())
        {
            commandLine.Append(@object["CommandLine"]);
            commandLine.Append(" ");
        }
    }

    return commandLine.ToString();
}

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