foreach (Process p in Process.GetProcesses())
            {
                // 查找 p.ProcessName ，做你自己的事情，打开和关闭，看帮助

            }

------解决方案--------------------

       /// <summary>
       /// 关闭需要更新软件的进程
       /// </summary>
       /// <param name="strProcessesByName">进程名称</param>
       public void KillProcess(string strProcessesByName)
       {
           foreach (Process p in System.Diagnostics.Process.GetProcessesByName(strProcessesByName))
           {
               try
               {
                   p.Kill();
                   p.WaitForExit(); // possibly with a timeout
               }
               catch (Win32Exception winException)
               {
                   // process was terminating or can't be terminated - deal with it
               }
               catch (InvalidOperationException invalidException)
               {
                   // process has already exited - might be able to let this one go
               }
           }
       }

------解决方案--------------------

           foreach (Process p in Process.GetProcesses())
           {
               // 查找 p.ProcessName ，做你自己的事情，打开和关闭，看帮助

           }


------解决方案--------------------
同意的+1

------解决方案--------------------
打开进程：Thread th = new Thread(new ThreadStart(GetCurrentReport)); th.Start();
GetCurrentReport 他是你要执行进程的那个方法。
Process.GetCurrentProcess().Kill(); 是杀掉进程，你可以在当窗体关闭时的事件中执行此段代码，也就是当关闭窗体时进程也关掉