How do I prevent my app from launching over and over again

This question already has an answer here:

What is the correct way to create a single-instance application? 35 answers

---

this is from this answer which is a duplicate of this one. You check in your app's entry constructor for whether or not the app is already running.

static void Main() 
{
    Process currentProcess = Process.GetCurrentProcess();
    var runningProcess = (from process in Process.GetProcesses()
                          where
                            process.Id != currentProcess.Id &&
                            process.ProcessName.Equals(
                              currentProcess.ProcessName,
                              StringComparison.Ordinal)
                          select process).FirstOrDefault();
    if (runningProcess != null)
    {
        ShowWindow(runningProcess.MainWindowHandle, SW_SHOWMAXIMIZED);
       return; 
    }
}

---

create some form of Global Mutex/Event handle that your app creates and then in your open routine check for it being present, if it is, exit the startup routing.

I have some basic code here in this answer I gave (for a different issue), but it demonstrates what you are trying to do.

UnauthorizedAccessException on Openexisting global mutex

链接地址: http://www.djcxy.com/p/51156.html

上一篇: 使用Mutex运行应用程序的单个实例

下一篇: 如何防止我的应用一次又一次启动