我如何检查每个用户会话正在运行的进程？ [英] How can I check for a running process per user session?

问题描述

我有一个.net应用程序，我只允许在一次运行一个进程，但是该应用程序上使用思杰箱子不时，因此，可以由多个用户在同一台​​机器上运行

我要检查，并确保该应用程序是唯一每个用户会话中运行一次，因为现在如果用户A正在运行的应用程序，那么用户B获得的应用程序已在使用中的消息，并且不应该。

这是我现在有一个检查正在运行的进程：

 过程[] P = Process.GetProcessesByName（Process.GetCurrentProcess（）ProcessName。）;
            如果（p.Length→1）
            {
＃如果！DEBUG
                allowedToOpen和放大器; = FALSE;
                的errorMessage + =
                    的String.Format（{0}已经运行{1}，Constants.AssemblyTitle，Environment.NewLine）;
#ENDIF
            }
 

解决方案

编辑：的改进，根据答案<一href="http://stackoverflow.com/questions/229565/what-is-a-good-pattern-for-using-a-global-mutex-in-c/229567#229567">this CW问题 ...

您可以使用一个互斥体检查阉应用程序已经运行：

 使用（VAR互斥=新的mutex（假，APPGUID））
{
    尝试
    {
        尝试
        {
            如果（！mutex.WaitOne（0，FALSE））
            {
                的MessageBox.show（另一个实例已经在运行。）;
                返回;
            }
        }
        赶上（AbandonedMutexException）
        {
            //登录互斥锁被遗弃在另一个进程的事实，
            //它仍然会得到获得性
        }

        Application.Run（新Form1中（））;
    }
    最后
    {
        mutex.ReleaseMutex（）;
    }
}
 

重要的是 APPGUID - 你可以把它取决于用户

也许你喜欢阅读这篇文章：被误解的互斥

I have a .NET application that I only allow to run a single process at a time of, however that app is used on Citrix boxes from time to time, and as such, can be run by multiple users on the same machine.

I want to check and make sure that the application is only running once per user session, because right now if user A is running the app, then user B gets the "App already in use" message, and should not.

This is what I have now that checks for the running process:

Process[] p = Process.GetProcessesByName(Process.GetCurrentProcess().ProcessName);
            if (p.Length > 1)
            {
#if !DEBUG
                allowedToOpen &= false;
                errorMessage +=
                    string.Format("{0} is already running.{1}", Constants.AssemblyTitle, Environment.NewLine);
#endif
            }

解决方案

EDIT: Improved the answer according to this cw question ...

You can use a mutex for checking wether the app already runs:

using( var mutex = new Mutex( false, AppGuid ) )
{
    try
    {
        try
        {
            if( !mutex.WaitOne( 0, false ) )
            {
                MessageBox.Show( "Another instance is already running." );
                return;
            }
        }
        catch( AbandonedMutexException )
        {
            // Log the fact the mutex was abandoned in another process,
            // it will still get aquired
        }

        Application.Run(new Form1());
    }
    finally
    {
        mutex.ReleaseMutex();
    }
}

Important is the AppGuid - you could make it depend on the user.

Maybe you like to read this article: the misunderstood mutex

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