c#在textbox控件里面输入，然后在读出来

问题遇到的现象和发生背景

问题相关代码，请勿粘贴截图

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Srr110uLib;
using Srr1100U;
namespace WpfApplication1
{

public partial class MainWindow : Window
{

    SrrReader uhf = new SrrReader ("com8");
    private string cc2;

    public MainWindow ()
    {

        InitializeComponent ();
    }

    private void button_Click (object sender, RoutedEventArgs e)
    {

        /* SsuControl ssr = new SsuControl ();
         ssr.Init ("com8");
          byte[] cc=null;*/

        uhf.ConnDevice ();
        uhf.Read (c);


    }
    void c (string i)
    {
        this.Dispatcher.Invoke (() => { listBox.Items.Add (i); });
        uhf.CloseDevice ();

    }

    private void button1_Click (object sender, RoutedEventArgs e)
    {
        SsuControl cc = new SsuControl ();
        cc.Init ("com8");

        byte[] a = cc.ReadDate ();

        cc.WriteDate (a);
        foreach (byte i in a)
            textBox.Text += i.ToString ("X2");
        cc.Close ();
    }

    private void textBox1_TextChanged (object sender, TextChangedEventArgs e)
    {

    }

    private void button2_Click (object sender, RoutedEventArgs e)
    {
        SsuControl aa = new SsuControl ();
        aa.Init ("com8");



        /*byte[] b = {“”原本是在这里输入0x01这些“” };*/


        /*string cc = textBox1.Text.ToString ();
        cc2 = "00000000";
        cc = cc2.Substring (0, 8 - cc2.Length) + cc;
        byte[] b = System.Text.Encoding.Default.GetBytes (cc);这里是从网上摘抄的*/

        aa.WriteDate (b);
        aa.Close();
       






    }

    private void textBox_TextChanged (object sender, TextChangedEventArgs e)
    {

    }
}

}

运行结果及报错内容

我的解答思路和尝试过的方法

我想要达到的结果

byte[] b = {原本是在这里输入0x01这些“};，然后读出来，现在我想启动之后，在textbox里面写，然后读写出来，怎么弄各位大咖

string s=textbox.Text.Replace(" ","");//去掉多余的空格
if(s.Length%2>0)
{
//不是偶数，不能转换
return;
}
byte[] b=new byte[s.Length/2];
for (int i=0;i<b.Length;i++)
{
string s1=s.Substring(i*2,2);
bool isbyte=byte.TryParse(s1,System.Globalization.NumberStyles.HexNumber,null,out b[i]);
//这里要再判断一下isbyte，如果输入的没法转换成16进制数，后面不要发送
}

0x01是啥

如果不用转义的话
先申请一个全局变量
string 存储写入的值="";

写的事件里
存储写入的值==this.textBox1.text;
读的事件里
this.textBox2.text=存储写入的值;