C#-执行cmd命令,获取结果

using System;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace EFDemo {
    public partial class ExecCmd : Form {
        public ExecCmd() {
            InitializeComponent();
            Control.CheckForIllegalCrossThreadCalls = false;
        }

        private void button1_Click(object sender, EventArgs e) {
            if (pro == null) { MessageBox.Show("进程未开启"); return; }
            Task.Factory.StartNew(() => {

                AppendLog("执行命令: " + textBox1.Text);
                pro.StandardInput.WriteLine(textBox1.Text);
                //pro.StandardInput.WriteLine("exit");
                pro.StandardInput.AutoFlush = true;
                //获取cmd窗口的输出信息

                string output = "";
                while (true) {
                    output = pro.StandardOutput.ReadLine();
                    AppendLog(output);
                }
            });
        }

        public void AppendLog(string str) {
            textBox2.AppendText("
" + str);
        }


        //CMD进程
        System.Diagnostics.Process pro = null;
        //启动线程
        private void button2_Click(object sender, EventArgs e) {

            if (pro != null) {
                MessageBox.Show("只能运行一个程序！", "请确定", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                return;
            }

            AppendLog("初始化参数");
            pro = new System.Diagnostics.Process();
            pro.StartInfo.FileName = "cmd.exe";
            pro.StartInfo.UseShellExecute = false;
            pro.StartInfo.RedirectStandardError = true;
            pro.StartInfo.RedirectStandardInput = true;
            pro.StartInfo.RedirectStandardOutput = true;
            pro.StartInfo.CreateNoWindow = true;
            //pro.StartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
            AppendLog("启动");
            pro.Start();
        }

        //关闭
        private void button3_Click(object sender, EventArgs e) {
            if (pro != null) {
                pro.Close();
                pro = null;
                AppendLog("关闭");
            }
        }



    }
}