如何发送和接收1024位？
我正在使用C＃windows Forms设计一个接口，我想使用串口发送和接收1024位，我发送的数字是hex格式，所以我做的是下一个：
private void button2_Click(object sender, EventArgs e) { int i; int a = 0; byte[] mychar; mychar = new byte[128]; string M = textBox1.Text; for (i = 0; i < 127; i++ ) { mychar[i] = Convert.ToByte((M.Substring(a,2)),16); a += 2; } serialPort1.Write(mychar,0,127); } 为了检查数据是否正确，我将发送器和接收器都短路，这样我就可以看到我从textbox1发送的内容将在textbox5中显示，问题是文本框显示输出为ASCII，我无法告诉我如何将其转换为hexforms，（请参阅我的尝试，如下所述）：
private void displaytext(object s, EventArgs e) { textBox5.Clear(); textBox5.AppendText(RXstring); //int value = Convert.ToInt32(RXstring, 16); //string stringValue = Char.ConvertFromUtf32(value); //textBox4.AppendText(stringValue); }
总结一下我的问题 ：1-发送数据的代码是否正确？ 2-如何强制文本框将输出显示为hex？
非常感谢你。
更新这是我的完整代码，也许你了解我的问题：
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace WindowsFormsApplication1 { public partial class Form3 : Form { public Form3() { InitializeComponent(); } string RXstring = ""; private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e) { try { RXstring = serialPort1.ReadExisting(); this.Invoke(new EventHandler(displaytext)); } catch (System.TimeoutException) { } } private void displaytext(object s, EventArgs e) { textBox5.Clear(); textBox5.AppendText(RXstring); //int value = Convert.ToInt32(RXstring, 16); //string stringValue = Char.ConvertFromUtf32(value); //textBox4.AppendText(stringValue); } private void pictureBox2_Click(object sender, EventArgs e) { serialPort1.Close(); Form1 myForm = new Form1(); this.Close(); } private void button1_Click(object sender, EventArgs e) { try { if (!serialPort1.IsOpen) { serialPort1.Open(); button1.Enabled = false; } else { MessageBox.Show("Port is Open by other party!"); } } catch (UnauthorizedAccessException ex) { MessageBox.Show(ex.Message); } } private void Form3_FormClosed(object sender, FormClosedEventArgs e) { serialPort1.Close(); } private void button3_Click(object sender, EventArgs e) { textBox1.Text = "0"; textBox2.Text = "0"; textBox3.Text = "0"; textBox4.Text = "0"; textBox5.Text = ""; } private void button2_Click(object sender, EventArgs e) { int i; int a=0; byte[] mychar; mychar = new byte[128]; string M = textBox1.Text; for (i = 0; i < 127; i++ ) { mychar[i] = Convert.ToByte((M.Substring(a,2)),16); a += 2; } serialPort1.Write(mychar,0,127); } } }
当我从textbox1发送数据时，我希望与我在textbox5中发送的内容完全一致，你可以帮助我吗？ https://drive.google.com/file/d/0B5PXKMhwKWQRREtuMXBaZDA1LUU/view?usp=sharing
此MCVE显示如何在byte s和hexstring s之间进行转换：
class Program { static void Main(string[] args) { byte[] bytes = FromHexString("0123456789ABCEF"); string text = ToHexString(bytes); Console.Write(text); Console.ReadKey(true); } static byte[] FromHexString(string hexString) { byte[] result; //determine length and handle case of uneven digit count int length = hexString.Length / 2; bool even = length * 2 == hexString.Length; if(!even) { length++; } //allocate memory result = new byte[length]; int offset; if(even) { offset = 0; } else { //convert first digit, if digit count is uneven result[0] = Convert.ToByte(hexString[0].ToString(), 16); offset = 1; } for(int i = offset; i < result.Length; i++) { //convert digit to byte result[i] = Convert.ToByte((hexString.Substring(i * 2 - offset, 2)), 16); } return result; } static string ToHexString(byte[] bytes, bool upperCase = true) { string format = upperCase ? "X" : "x"; //initialize result with double capacity as a byte in hex notation occupies 2 chars StringBuilder result = new StringBuilder(bytes.Length * 2); foreach(var @byte in bytes) { result.Append(@byte.ToString(format)); } return result.ToString(); } }
我刚刚在代码中添加了以下内容：
string hex = ""; foreach (char c in RXstring) { int tmp = c; hex += String.Format("{0:X2}", (uint)System.Convert.ToUInt32(tmp.ToString())); } textBox5.AppendText(hex);
还是非常感谢 ：）