检查我的 Windows 应用程序是否正在运行 [英] Checking if my Windows application is running

问题描述

如何检查我的 C# Windows 应用程序是否正在运行?

How do I check if my C# Windows application is running ?

我知道我可以检查进程名称，但如果exe更改，名称可以更改.

I know that I can check the process name but the name can be changed if the exe changes.

有什么办法可以让我的应用程序拥有一个哈希键或其他东西吗?

Is there any way to have a hash key or something to make my application unique?

推荐答案

public partial class App : System.Windows.Application
{
    public bool IsProcessOpen(string name)
    {
        foreach (Process clsProcess in Process.GetProcesses()) 
        {
            if (clsProcess.ProcessName.Contains(name))
            {
                return true;
            }
        }

        return false;
    }

    protected override void OnStartup(StartupEventArgs e)
    {
        // Get Reference to the current Process
        Process thisProc = Process.GetCurrentProcess();

        if (IsProcessOpen("name of application.exe") == false)
        {
            //System.Windows.MessageBox.Show("Application not open!");
            //System.Windows.Application.Current.Shutdown();
        }
        else
        {
            // Check how many total processes have the same name as the current one
            if (Process.GetProcessesByName(thisProc.ProcessName).Length > 1)
            {
                // If ther is more than one, than it is already running.
                System.Windows.MessageBox.Show("Application is already running.");
                System.Windows.Application.Current.Shutdown();
                return;
            }

            base.OnStartup(e);
        }
    }

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