Class - Convert String To Number
1
2 using System;
3 using System.Text;
4 namespace SidleHelper
5 {
6 /// <summary>
7 /// Summary description for StrHelper.
8 /// 命名缩写：
9 /// Str: unicode string
10 /// Arr: unicode array
11 /// Hex: 二进制数据
12 /// Hexbin: 二进制数据用ASCII字符表示 例 字符'1'的hex是0x31表示为hexbin是 '3''1'
13 /// Asc: ASCII
14 /// Uni: UNICODE
15 /// </summary>
16 public sealed class StrHelper
17 {
18 #region Hex与Hexbin的转换
19 public static void Hexbin2Hex(byte[] bHexbin, byte[] bHex, int nLen)
20 {
21 for(int i=0; i<nLen/2; i++)
22 {
23 if(bHexbin[2*i] <0x41)
24 {
25 bHex[i] = Convert.ToByte(((bHexbin[2*i] - 0x30)<<4) & 0xf0);
26 }
27 else
28 {
29 bHex[i] = Convert.ToByte(((bHexbin[2*i] - 0x37)<<4) & 0xf0);
30 }
31
32 if(bHexbin[2*i+1] <0x41)
33 {
34 bHex[i] |= Convert.ToByte((bHexbin[2*i+1] - 0x30) & 0x0f);
35 }
36 else
37 {
38 bHex[i] |= Convert.ToByte((bHexbin[2*i+1] - 0x37) & 0x0f);
39 }
40 }
41 }
42 public static byte[] Hexbin2Hex(byte[] bHexbin, int nLen)
43 {
44 if(nLen％2 !=0)
45 return null;
46 byte[] bHex = new byte[nLen/2];
47 Hexbin2Hex(bHexbin, bHex, nLen);
48 return bHex;
49 }
50 public static void Hex2Hexbin(byte[] bHex, byte[] bHexbin, int nLen)
51 {
52 byte c;
53 for(int i=0;i<nLen;i++)
54 {
55 c = Convert.ToByte((bHex[i]>>4) & 0x0f);
56 if(c < 0x0a)
57 {
58 bHexbin[2*i] = Convert.ToByte(c + 0x30);
59 }
60 else
61 {
62 bHexbin[2*i] = Convert.ToByte(c + 0x37);
63 }
64 c = Convert.ToByte(bHex[i]&0x0f);
65 if(c < 0x0a)
66 {
67 bHexbin[2*i+1] = Convert.ToByte(c + 0x30);
68 }
69 else
70 {
71 bHexbin[2*i+1] = Convert.ToByte(c + 0x37);
72 }
73 }
74 }
75 public static byte[] Hex2Hexbin(byte[] bHex, int nLen)
76 {
77 byte[] bHexbin = new byte[nLen*2];
78 Hex2Hexbin(bHex, bHexbin, nLen);
79 return bHexbin;
80 }
81 #endregion
82
83 #region 数组和字符串之间的转化
84 public static byte[] Str2Arr(String s)
85 {
86 return (new UnicodeEncoding()).GetBytes(s);
87 }
88 public static string Arr2Str(byte[] buffer)
89 {
90 return (new UnicodeEncoding()).GetString(buffer, 0, buffer.Length);
91 }
92
93 public static byte[] Str2AscArr(String s)
94 {
95 return System.Text.UnicodeEncoding.Convert(System.Text.Encoding.Unicode,
96 System.Text.Encoding.ASCII,
97 Str2Arr(s));
98 }
99
100 public static byte[] Str2HexAscArr(String s)
101 {
102 byte[] hex = Str2AscArr(s);
103 byte[] hexbin = Hex2Hexbin(hex, hex.Length);
104 return hexbin;
105 }
106 public static string AscArr2Str(byte[] b)
107 {
108 return System.Text.UnicodeEncoding.Unicode.GetString(
109 System.Text.ASCIIEncoding.Convert(System.Text.Encoding.ASCII,
110 System.Text.Encoding.Unicode,
111 b)
112 );
113 }
114
115 public static string HexAscArr2Str(byte[] buffer)
116 {
117 byte[] b = Hex2Hexbin(buffer, buffer.Length);
118 return AscArr2Str(b);
119 }
120 #endregion
121 }
122
