c# – 如何等待将要启动的进程？

我的应用程序需要等到特定进程开始.我是这样做的

while (Process.GetProcessesByName("someProcess").Length == 0)
{
    Thread.Sleep(100);
}

有没有其他方式(更优雅)如何实现这一点,功能类似于WaitForExit()？谢谢你的回答.

解决方法

看看 ManagementEventWatcher课程.

具体来说,链接底部的代码示例显示了如何设置ManagementEventWatcher以在创建新进程时收到通知.

从MSDN代码示例中复制的代码(可以稍微清理一下)：

using System;
using System.Management;

// This example shows synchronous consumption of events. 
// The client is blocked while waiting for events. 

public class EventWatcherPolling 
{
    public static int Main(string[] args) 
    {
        // Create event query to be notified within 1 second of 
        // a change in a service
        WqlEventQuery query = 
            new WqlEventQuery("__InstanceCreationEvent",new TimeSpan(0,1),"TargetInstance isa \"Win32_Process\"");

        // Initialize an event watcher and subscribe to events 
        // that match this query
        ManagementEventWatcher watcher =
            new ManagementEventWatcher();
        watcher.Query = query;
        // times out watcher.WaitForNextEvent in 5 seconds
        watcher.Options.Timeout = new TimeSpan(0,5);

        // Block until the next event occurs 
        // Note: this can be done in a loop if waiting for 
        //        more than one occurrence
        Console.WriteLine(
            "Open an application (notepad.exe) to trigger an event.");
        ManagementBaSEObject e = watcher.WaitForNextEvent();

        //display information from the event
        Console.WriteLine(
            "Process {0} has been created,path is: {1}",((ManagementBaSEObject)e
            ["TargetInstance"])["Name"],((ManagementBaSEObject)e
            ["TargetInstance"])["ExecutablePath"]);

        //Cancel the subscription
        watcher.Stop();
        return 0;
    }
}

编辑

添加了TargetInstance.Name =’someProcess’过滤器的简化示例.

var query = new WqlEventQuery(
                "__InstanceCreationEvent","TargetInstance isa \"Win32_Process\" and TargetInstance.Name = 'someProcess'"
              );

  using(var watcher = new ManagementEventWatcher(query))
  {
    ManagementBaSEObject e = watcher.WaitForNextEvent();

    //someProcess created.

    watcher.Stop();
  }