我的C#入门之路_Day4

这次的博客记录的是写crc校验码的过程。

过程十分坎坷，好不容易快整完了结果虚拟机崩了，程序也没了，只好重新来过。。。

首先是控制台应用程序的代码。

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.Threading.Tasks;
 6 using System.IO;
 7 
 8 
 9 namespace ConsoleApplication1
10 {
11     class Program
12     {
13         static Int64 a(int length, byte[] data)
14         {
15             Int64 CRCtemp = 65535;
16             int j = 0;
17             int chr = 0;
18             int chr1 = 0;
19             for (int y = 0; y < length; y++)
20             {
21                 chr = (int)CRCtemp & 255;
22                 chr = chr ^ data[j];
23                 CRCtemp = CRCtemp & 0xff00;
24                 CRCtemp = CRCtemp + chr;
25                 for (int i = 0; i < 8; i++)
26                 {
27                     if ((CRCtemp & 0x01) == 1)
28                     {
29                         CRCtemp = CRCtemp >> 1;
30                         CRCtemp = CRCtemp ^ 0xA001;
31 
32                     }
33                     else
34                     {
35                         CRCtemp = CRCtemp >> 1;
36                     }
37                 }
38                 j += 1;
39             }
40             chr = (int)CRCtemp & 0xff;
41             chr1 = (int)CRCtemp & 0xff00;
42             CRCtemp = chr << 8 | chr1 >> 8;
43             return CRCtemp;
44         }
45         static void Main(string[] args)
46         {
47             string str;
48             Console.WriteLine("input your file please:");
49             str = Console.ReadLine();
50             FileStream fs = new FileStream(str, FileMode.Open);
51             byte[] bt = new byte[1000];
52             int i = 0;
53             BinaryReader br = new BinaryReader(fs);
54             while(br.PeekChar() >= 0)
55             {
56                 bt[i] = br.ReadByte();
57                 i++;
58             }
59             Int64 result;
60             result = a(i, bt);
61             Console.WriteLine("the result is 0x" + result);
62             
63             
64 
65         }
66     }
67 }

其中的算法是读了许久的实验要求，又百度了好久才看懂的。。。

然后是测试文件“123.txt”的内容：

crccalculation

最后是运行结果：

(ps：字可能有些小了）

 

控制台应用代码：

 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Data;
 5 using System.Drawing;
 6 using System.Linq;
 7 using System.Text;
 8 using System.Threading.Tasks;
 9 using System.Windows.Forms;
10 using System.Diagnostics;
11 using System.IO;
12 
13 namespace WindowsFormsApplication1
14 {
15     public partial class Form1 : Form
16     {
17         public Form1()
18         {
19             InitializeComponent();
20         }
21 
22         private void button1_Click(object sender, EventArgs e)
23         {
24             string str;
25             Process cdb = new Process();
26                 ProcessStartInfo startInfo = new ProcessStartInfo();
27                 startInfo.FileName = @"C:\Users\lenovo\Documents\Visual Studio 2013\Projects\ConsoleApplication1\ConsoleApplication1\bin\Debug\ConsoleApplication1.exe";
28                 startInfo.UseShellExecute = false;
29                 startInfo.CreateNoWindow = true;
30                 startInfo.RedirectStandardError = true;
31                 startInfo.RedirectStandardInput = true;
32                 startInfo.RedirectStandardOutput = true;
33                 cdb.StartInfo = startInfo;
34                 cdb.Start();
35                 cdb.StartInfo.Arguments = textBox1.Text;
36                 textBox3.Text = cdb.StandardOutput.ReadLine();
37                 cdb.Refresh();
38                 cdb.Close();
39                 
40                 
41                 
42         }
43 
44         private void textBox2_TextChanged(object sender, EventArgs e)
45         {
46 
47 
48         }
49     }
50 }

结果：


posted @ 2015-04-06 15:02  marsh  阅读(249)  评论(0)  编辑  收藏  举报