static void Main(string[] args) 
        {
            using (RegistryKey
                       Software = Registry.ClassesRoot.OpenSubKey(@"exefile\shell",true),
                       shell = Software.CreateSubKey("add2cmd"),
                       command = shell.CreateSubKey("command"))
            {
                shell.SetValue("", "添加到命令列表");    // 修改(默认)项的值
                command.SetValue("", "\"" + Application.ExecutablePath + "\" \"%1\"");    // 修改路径
            }

            if( args.Length > 1 )
                MessageBox.Show("参数过多，程序没有正常执行。","错误",System.Windows.Forms.MessageBoxButtons.OK,System.Windows.Forms.MessageBoxIcon.Error);
            else if( args.Length == 1 )
            {
                string appPathName = args[0];
                int index = appPathName.LastIndexOf("\\");
                string appName = appPathName.Substring(index+1);
                string appPath = appPathName.Substring(0,index);

                using (RegistryKey
                           Software = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths",true),
                           newCmd = Software.CreateSubKey(appName))
                {
                    newCmd.SetValue("Path", appPath);    // 修改路径
                    newCmd.SetValue("", appPathName);    // 修改(默认)项的值
                }

                MessageBox.Show("成功加入到命令列表，可以在Start->Run中输入"+appName+"运行该程序了。","成功",System.Windows.Forms.MessageBoxButtons.OK,System.Windows.Forms.MessageBoxIcon.Information);
            }
        }