1 public class ChineseHelper
2 {
3
4 #region 获取汉字字符串的首拼
5 /// <summary>
6 /// 在指定的字符串列表CnStr中检索符合拼音索引字符串
7 /// </summary>
8 /// <param name="CnStr">汉字字符串</param>
9 /// <returns>相对应的汉语拼音首字母串</returns>
10 public static string GetSpellCode(string CnStr)
11 {
12 string strTemp = "";
13 int iLen = CnStr.Length;
14 int i = 0;
15 for (i = 0; i <= iLen - 1; i++)
16 {
17 strTemp += GetCharSpellCode(CnStr.Substring(i, 1));
18 }
19 return strTemp;
20 }
21
22 /// <summary>
23 /// 得到一个汉字的拼音第一个字母，如果是一个英文字母则直接返回大写字母
24 /// </summary>
25 /// <param name="CnChar">单个汉字</param>
26 /// <returns>单个大写字母</returns>
27 private static string GetCharSpellCode(string CnChar)
28 {
29 long iCnChar;
30 byte[] ZW = System.Text.Encoding.Default.GetBytes(CnChar);
31 //如果是字母，则直接返回首字母
32 if (ZW.Length == 1)
33 {
34 return CommonMethod.CutString(CnChar.ToUpper(), 1);
35 }
36 else
37 {
38 // get the array of byte from the single char
39 int i1 = (short)(ZW[0]);
40 int i2 = (short)(ZW[1]);
41 iCnChar = i1 * 256 + i2;
42 }
43 // iCnChar match the constant
44 #region
45 if ((iCnChar >= 45217) && (iCnChar <= 45252))
46 {
47 return "A";
48 }
49 else if ((iCnChar >= 45253) && (iCnChar <= 45760))
50 {
51 return "B";
52 }
53 else if ((iCnChar >= 45761) && (iCnChar <= 46317))
54 {
55 return "C";
56 }
57 else if ((iCnChar >= 46318) && (iCnChar <= 46825))
58 {
59 return "D";
60 }
61 else if ((iCnChar >= 46826) && (iCnChar <= 47009))
62 {
63 return "E";
64 }
65 else if ((iCnChar >= 47010) && (iCnChar <= 47296))
66 {
67 return "F";
68 }
69 else if ((iCnChar >= 47297) && (iCnChar <= 47613))
70 {
71 return "G";
72 }
73 else if ((iCnChar >= 47614) && (iCnChar <= 48118))
74 {
75 return "H";
76 }
77 else if ((iCnChar >= 48119) && (iCnChar <= 49061))
78 {
79 return "J";
80 }
81 else if ((iCnChar >= 49062) && (iCnChar <= 49323))
82 {
83 return "K";
84 }
85 else if ((iCnChar >= 49324) && (iCnChar <= 49895))
86 {
87 return "L";
88 }
89 else if ((iCnChar >= 49896) && (iCnChar <= 50370))
90 {
91 return "M";
92 }
93 else if ((iCnChar >= 50371) && (iCnChar <= 50613))
94 {
95 return "N";
96 }
97 else if ((iCnChar >= 50614) && (iCnChar <= 50621))
98 {
99 return "O";
100 }
101 else if ((iCnChar >= 50622) && (iCnChar <= 50905))
102 {
103 return "P";
104 }
105 else if ((iCnChar >= 50906) && (iCnChar <= 51386))
106 {
107 return "Q";
108 }
109 else if ((iCnChar >= 51387) && (iCnChar <= 51445))
110 {
111 return "R";
112 }
113 else if ((iCnChar >= 51446) && (iCnChar <= 52217))
114 {
115 return "S";
116 }
117 else if ((iCnChar >= 52218) && (iCnChar <= 52697))
118 {
119 return "T";
120 }
121 else if ((iCnChar >= 52698) && (iCnChar <= 52979))
122 {
123 return "W";
124 }
125 else if ((iCnChar >= 52980) && (iCnChar <= 53640))
126 {
127 return "X";
128 }
129 else if ((iCnChar >= 53689) && (iCnChar <= 54480))
130 {
131 return "Y";
132 }
133 else if ((iCnChar >= 54481) && (iCnChar <= 55289))
134 {
135 return "Z";
136 }
137 else
138 return ("-");
139 #endregion
140 }
141
142 #endregion
143 }
144 public class CommonMethod
145 {
146 #region 截取字符长度 static string CutString(string str, int len)
147 /// <summary>
148 /// 截取字符长度
149 /// </summary>
150 /// <param name="str">被截取的字符串</param>
151 /// <param name="len">所截取的长度</param>
152 /// <returns>子字符串</returns>
153 public static string CutString(string str, int len)
154 {
155 if (str == null || str.Length == 0 || len <= 0)
156 {
157 return string.Empty;
158 }
159
160 int l = str.Length;
161
162
163 #region 计算长度
164 int clen = 0;
165 while (clen < len && clen < l)
166 {
167 //每遇到一个中文，则将目标长度减一。
168 if ((int)str[clen] > 128) { len--; }
169 clen++;
170 }
171 #endregion
172
173 if (clen < l)
174 {
175 return str.Substring(0, clen) + "...";
176 }
177 else
178 {
179 return str;
180 }
181 }
182 #endregion
183 }
