C# 控制台输出语句想显示到richTextBox中该如何写

public delegate void DelReadStdOutput(string result);

public delegate void DelReadErrOutput(string result);

public partial class Form1 : Form
{
// 2.定义委托事件
public event DelReadStdOutput ReadStdOutput;
public event DelReadErrOutput ReadErrOutput;

public Form1()
{
InitializeComponent();
Init();
}

private void Init()
{
//3.将相应函数注册到委托事件中
ReadStdOutput += new DelReadStdOutput(ReadStdOutputAction);
ReadErrOutput += new DelReadErrOutput(ReadErrOutputAction);
}

private void button1_Click(object sender, EventArgs e)
{
// 启动进程执行相应命令,此例中以执行ping.exe为例
//参数-a我这边得不到结果，试了下-an可以得到结果
RealAction("NETSTAT", "-an");

}

private void RealAction(string StartFileName, string StartFileArg)
{
ProcessStartInfo startInfo = new ProcessStartInfo();
Process CmdProcess = new Process();

CmdProcess.StartInfo.WorkingDirectory = @"C:\Windows\System32";
CmdProcess.StartInfo.FileName = StartFileName; // 命令
CmdProcess.StartInfo.Arguments = StartFileArg; // 参数

CmdProcess.StartInfo.CreateNoWindow = true; // 不创建新窗口
CmdProcess.StartInfo.UseShellExecute = false;
CmdProcess.StartInfo.RedirectStandardInput = true; // 重定向输入
CmdProcess.StartInfo.RedirectStandardOutput = true; // 重定向标准输出
CmdProcess.StartInfo.RedirectStandardError = true; // 重定向错误输出
CmdProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;

CmdProcess.OutputDataReceived += new DataReceivedEventHandler(p_OutputDataReceived);
CmdProcess.ErrorDataReceived += new DataReceivedEventHandler(p_ErrorDataReceived);
CmdProcess.EnableRaisingEvents = true; // 启用Exited事件
CmdProcess.Exited += new EventHandler(CmdProcess_Exited); // 注册进程结束事件

CmdProcess.Start();
CmdProcess.BeginOutputReadLine();
CmdProcess.BeginErrorReadLine();

// 如果打开注释，则以同步方式执行命令，此例子中用Exited事件异步执行。
// CmdProcess.WaitForExit();
}

private void p_OutputDataReceived(object sender, DataReceivedEventArgs e)
{
if (e.Data != null)
{
// 4. 异步调用，需要invoke
this.Invoke(ReadStdOutput, new object[] { e.Data+"ss"+e.Data.Length});
}
}

private void p_ErrorDataReceived(object sender, DataReceivedEventArgs e)
{
if (e.Data != null)
{
this.Invoke(ReadErrOutput, new object[] { e.Data });
}
}

private void ReadStdOutputAction(string result)
{
this.textBoxShowStdRet.AppendText(result + "\r\n");
}

private void ReadErrOutputAction(string result)
{
this.textBoxShowStdRet.AppendText(result + "\r\n");
}
可以参考我的代码的原理实现