1
2 public byte GetXor(byte[] data)
3 {
4 byte CheckCode = 0;
5 int len = data.Length;
6 for (int i = 0; i < len; i++)
7 {
8 CheckCode ^= data[i];
9 }
10 return CheckCode;
11 }
12
13 private string CRC(string cmdString)
14 {
15 try
16 {
17 //CRC寄存器
18 int CRCCode = 0;
19 //将字符串拆分成为16进制字节数据然后两位两位进行异或校验
20 for (int i = 1; i < cmdString.Length / 2; i++)
21 {
22 string cmdHex = cmdString.Substring(i * 2, 2);
23 if (i == 1)
24 {
25 string cmdPrvHex = cmdString.Substring((i - 1) * 2, 2);
26 byte t = (byte)Convert.ToInt32(cmdHex, 10);
27 byte tt = (byte)Convert.ToInt32(cmdPrvHex, 10);
28 CRCCode = (byte)Convert.ToInt32(cmdPrvHex, 10) ^ (byte)Convert.ToInt32(cmdHex, 10);
29 }
30 else
31 {
32 CRCCode = (byte)CRCCode ^ (byte)Convert.ToInt32(cmdHex, 16);
33 }
34 }
35 return Convert.ToString(CRCCode, 16).ToUpper();//返回16进制校验码
36 }
37 catch
38 {
39 throw;
40 }
41 }
42
43 private void button1_Click(object sender, EventArgs e)
44 {
45 try
46 {
47 // txtZhi.Text = CRC(textBox1.Text.Replace(" ", ""));
48 byte[] bytes = new byte[6];
49 bytes[0] = 36;
50 bytes[1] = 50;
51 bytes[2] = 50;
52 bytes[3] = 48;
53 bytes[4] = 50;
54 bytes[5] = 57;
55 string cmd= "$31064";//$ 3 1 064 14
56 ASCIIEncoding ascii = new ASCIIEncoding();
57 Byte[] encodedBytes = ascii.GetBytes(cmd);
58 byte code = GetXor(encodedBytes);
59
60 txtZhi.Text = cmd+ Convert.ToString(code, 16).ToUpper();
61 }
62 catch
63 {
64 MessageBox.Show("校验失败,请检查字符串是否包含特殊字符");
65 }
66 }
67
68 private void button2_Click(object sender, EventArgs e)
69 {
70 ASCIIEncoding ascii = new ASCIIEncoding();
71 Byte[] encodedBytes = ascii.GetBytes(textBox1.Text);
72 }
