c# 调用外部程序(带参数)

            string parmes = "";
            Process w = new Process();
            //指定 调用程序的路径
            w.StartInfo.FileName = Application.StartupPath + @"\xmlpkg.exe";
            w.StartInfo.UseShellExecute = false;
            //不显示执行窗口
            w.StartInfo.CreateNoWindow = true;
            
            if (radioButton1.Checked) //打包
            {
                parmes = string.Format(" -p {0} {1}", textBox2.Text, textBox1.Text);
            }
            else if (radioButton2.Checked)//解压
            {
                parmes = string.Format(" -u {0} {1}", textBox1.Text, textBox2.Text);
            }
            else 
            {
                MessageBox.Show("请先选择 打包或是解压 操作");
                return;
            }
            //指定 调用程序的参数
            w.StartInfo.Arguments = parmes;
            w.Start();