C# - 如何检查进程是否成功启动 [英] C# - how to check if a process was successfully started

问题描述

可能的重复:
如何知道 Process.Start() 是否成功?

我的程序中有一个类似于看门狗的进程(我们称之为WD)，它是另一个正在运行的进程(我们称之为A).我在某个事件启动 WD 进程，假设按下了一个键，我想用这个进程启动另一个进程，我们称之为 B.

I have a process similar to a watchdog(let's call it WD) in my program which is another running process(let's call it A). I am starting WD process at a certain event, let's say a key is pressed and I want to start another process with this process, let's call it B.

问题是我想在我知道进程 B 成功启动后关闭初始进程 A.我该如何检查?

The thing is that I want to shut down the initial process A after what I know that process B was successfully started. How can I check that?

我正在使用 Process.Start(argList) 和 ProcessInfo(argList) 开始处理 WD 和 B句法.

I am starting process WD and B with Process.Start(argList) and ProcessInfo(argList) syntax.

每个进程都是一个简单的 C# 控制台应用程序.

Each process is a simple C# Console Application.

推荐答案

Process.Start 返回一个布尔值(true 如果进程正确启动)检查此 MSDN link 了解 Process.Start() 方法.

Process.Start returns a boolean (true if process started correctly) Check this MSDN link for Process.Start() method.

您的代码应该类似于:

        Process B= new Process();

        try
        {
            B.StartInfo.UseShellExecute = false;
            B.StartInfo.FileName = "C:\\B.exe";
            B.StartInfo.CreateNoWindow = true;
            if (B.Start())
            {
              // Kill process A 
            }
            else
            {
               // Handle incorrect start of process B and do NOT stop A
            }

        }
        catch (Exception e)
        {
            // Handle exception and do NOT stop A
        }

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