System.Diagnostics.ProcessStartInfo Info = new System.Diagnostics.ProcessStartInfo();

            //设置外部程序名

            Info.FileName = "eclipse.exe";

            //设置外部程序工作目录为   C:\

            Info.WorkingDirectory = @"D:\常用软件\eclipse";

            //最小化方式启动

            Info.WindowStyle = System.Diagnostics.ProcessWindowStyle.Minimized;

            //声明一个程序类

            System.Diagnostics.Process Proc;

            try

            {

                Proc = System.Diagnostics.Process.Start(Info);

                System.Threading.Thread.Sleep();

            }

            catch (System.ComponentModel.Win32Exception)

            {

                return;

            }

if (System.Diagnostics.Process.GetProcessesByName("SocketTool").ToList().Count > )

            {

                MessageBox.Show("SocketTool已经开始运行！");

                //存在

            }

            else

            {

                MessageBox.Show("SocketTool未开始运行！");

                //不存在

            }