C#常用方法二

  1   public sealed class StringTool
  2     {
  3         /// <summary>
  4         /// 将txt文件读入字符串
  5         /// </summary>
  6         /// <param name="aPath"></param>
  7         /// <returns></returns>
  8         public static string ReadTextFile(string aPath)
  9         {
 10             string text = "";
 11             using (TextReader tr = new StreamReader(aPath))
 12             {
 13                 text = tr.ReadToEnd();
 14             }
 15             return text;
 16         }
 17  
 18         /// <summary>
 19         /// 将16进行编码的字符串写入到指定的文件路径
 20         /// </summary>
 21         /// <param name="aPath"></param>
 22         /// <param name="aText"></param>
 23         public static void WriteTextFile(string aPath, string aText)
 24         {
 25             using (TextWriter tw = new StreamWriter(aPath))
 26             {
 27                 tw.Write(aText);
 28             }
 29         }
 30  
 31         /// <summary>
 32         /// 序列化DataTable,
 33         /// </summary>
 34         /// <param name="aTable">需要序列化的DataTable</param>
 35         /// <returns>成功返回非空字符串</returns>
 36         public static string SerializerToXml(DataTable aTable)
 37         {
 38             StringBuilder sb = new StringBuilder();
 39             if (aTable == null)
 40                 return "";
 41  
 42             System.Xml.Serialization.XmlSerializer serializer = new System.Xml.Serialization.XmlSerializer(typeof(System.Data.DataTable));
 43             System.Xml.XmlWriter writer = System.Xml.XmlWriter.Create(sb);
 44             serializer.Serialize(writer, aTable);
 45  
 46             return sb.ToString();
 47         }
 48  
 49         /// <summary>
 50         /// 反序列化DataTable表
 51         /// </summary>
 52         /// <param name="aXmlData">需要反序列化的DataTable的数据</param>
 53         /// <returns>成功返回DataTable,失败返回null</returns>
 54         public static DataTable DeSerializerFromXml(string aXmlData)
 55         {
 56             if (string.IsNullOrEmpty(aXmlData))
 57                 return null;
 58  
 59             System.Xml.Serialization.XmlSerializer serializer = new System.Xml.Serialization.XmlSerializer(typeof(System.Data.DataTable));
 60             return (DataTable)serializer.Deserialize(new StringReader(aXmlData));
 61         }
 62  
 63         /*
 64             // 字符串进行16进制编码[decodeSTR],因为编码后位数不等,为了节约空间不进行等长操作,所以并以","分隔
 65             // 与 StringTool.cs的函数相对应
 66             function EncodeSTR(str) {
 67                 var t = "";
 68                 for (var x = 0; x < str.length; x++) {
 69                     a = str.charCodeAt(x);
 70                     if (x != 0) {
 71                         t += ‘,‘;
 72                     }
 73                     t += a.toString(16).toUpperCase();
 74                 }
 75                 return t;
 76             }
 77             //字符串[以","分隔]进行16进制解码,编码用[encodeSTR]
 78             // 与 StringTool.cs的函数相对应
 79             function DecodeSTR(str) {
 80                 var a1 = str.split(‘,‘);
 81                 for (var x = 0; x < a1.length; x++) {
 82                     a1[x] = String.fromCharCode(parseInt(a1[x], 16).toString(10));
 83                 }
 84                 return a1.join(‘‘);
 85             }
 86          */
 87         /// <summary>
 88         /// 字符串转为用,分隔的16进制字符串 解码用[decodeSTR] 与 StringTool.js的函数相对应
 89         /// </summary>
 90         /// <param name="str">字符串</param>
 91         /// <param name="uppercase">大小写</param>
 92         /// <returns>失败返回空字符串</returns>
 93         static public string EncodeSTR(string str, bool uppercase = true)
 94         {
 95             if (string.IsNullOrEmpty(str))
 96                 return "";
 97             Char[] aa = str.ToCharArray();
 98             StringBuilder sb = new StringBuilder();
 99             string strFormat = "{0:" + (uppercase == true ? "X" : "x") + "}";
100             for (int i = 0; i < str.Length; i++)
101             {
102                 sb.Append(String.Format(strFormat, Char.ConvertToUtf32(str, i)));
103                 sb.Append(",");
104             }
105             if (sb.Length > 0)
106                 sb.Remove(sb.Length - 1, 1);
107             return sb.ToString();
108         }
109  
110         /// <summary>
111         /// 用,分隔的16进制字符串转为字符串 编码用[EncodeSTR] 与 StringTool.js的函数相对应
112         /// </summary>
113         /// <param name="str">用,分隔的16进制字符串</param>
114         /// <returns>失败返回空字符串</returns>
115         static public string DecodeSTR(string str)
116         {
117             if (string.IsNullOrEmpty(str))
118                 return "";
119             string[] aHexString = str.Split(new char[] { , });
120             StringBuilder sb = new StringBuilder();
121             for (int i = 0; i < aHexString.Length; i++)
122             {
123                 sb.Append(Char.ConvertFromUtf32(Convert.ToInt32(aHexString[i], 16)));
124             }
125             return sb.ToString();
126         }
127  
128         /// <summary>
129         /// 将字符串转为16进制字符串,并进行了异或加密
130         /// </summary>
131         /// <param name="aStr"></param>
132         /// <returns></returns>
133         public static string StringToHexString(string aStr)
134         {
135             if (string.IsNullOrEmpty(aStr))
136                 return "";
137             byte[] b = Encoding.Unicode.GetBytes(EncryptXOR(aStr));
138             return ArrayToHexString(b);
139         }
140  
141         /// <summary>
142         /// 将16进制字符串转为字符串,并进行了异或解密
143         /// </summary>
144         /// <param name="aStr"></param>
145         /// <returns></returns>
146         public static string HexStringToString(string aStr)
147         {
148             if (string.IsNullOrEmpty(aStr))
149                 return "";
150             byte[] b = HexStringToArray(aStr);
151             return DecryptXOR(Encoding.Unicode.GetString(b));
152         }
153  
154         /// <summary>
155         /// 字节数组到16进制字符串
156         /// </summary>
157         /// <param name="array"></param>
158         /// <param name="uppercase">大小写</param>
159         /// <returns>失败返回空字符串</returns>
160         ///
161         static public string ArrayToHexString(byte[] array, bool uppercase = true)
162         {
163             if (array == null || array.Length < 1) return "";
164             string  format = "x2";
165             if (uppercase) format = "X2";
166             StringBuilder sb = new StringBuilder();
167             foreach (byte b in array) sb.Append(b.ToString(format));
168             return sb.ToString();
169         }
170  
171         /// <summary>
172         ///  将16进制字符串转为字节数组
173         /// </summary>
174         /// <param name="aHexString"></param>
175         /// <param name="uppercase"></param>
176         /// <returns></returns>
177         static public byte[] HexStringToArray(string aHexString, bool uppercase = true)
178         {
179             if (string.IsNullOrEmpty(aHexString))
180                 return null;
181             int count = aHexString.Length / 2;
182             byte[] b = new byte[count];
183             for (int i = 0; i < count; i++)
184             {
185                 string s = aHexString.Substring(i * 2, 2);
186                 b[i] = byte.Parse(s, System.Globalization.NumberStyles.HexNumber);
187             }
188  
189             return b;
190         }
191  
192         /// <summary>
193         /// 在unicode 字符串中,中文的范围是在4E00..9FFF
194         //  通过对字符的unicode编码进行判断来确定字符是否为中文。
195         /// </summary>
196         /// <param name="word"></param>
197         /// <returns></returns>
198         static public bool IsChineseLetter(string word)
199         {
200             int code = 0;
201             int chfrom = Convert.ToInt32("4e00", 16);    //范围(0x4e00~0x9fff)转换成int(chfrom~chend)
202             int chend = Convert.ToInt32("9fff", 16);
203             if (word != "")
204             {
205                 code = Char.ConvertToUtf32(word, 0);   //获得字符word中指定索引index处字符unicode编码
206                 if (code >= chfrom && code <= chend)
207                     return true;     //当code在中文范围内返回true
208                 else
209                     return false;    //当code不在中文范围内返回false
210             }
211             return false;
212         }
213  
214         /// <summary>
215         /// 判断句子中是否含有中文
216         /// </summary>
217         /// <param >字符串</param>
218         /// <returns></returns>
219         static public bool WordsInChinese(string aStr)
220         {
221             Regex rx = new Regex("^[\u4e00-\u9fa5]$");
222             for (int i = 0; i < aStr.Length; i++)
223             {
224                 if (rx.IsMatch(aStr[i].ToString()))
225                     return true;
226             }
227             return false;
228         }
229  
230         /// <summary>
231         /// 给定一个字符串,判断其是否只包含有汉字
232         /// </summary>
233         /// <param name="aStr"></param>
234         /// <returns></returns>
235         static public bool IsOnlyContainsChinese(string aStr)
236         {
237             char[] words = aStr.ToCharArray();
238             foreach (char word in words)
239             {
240                 if (IsGBCode(word.ToString()) || IsGBKCode(word.ToString()))  // it is a GB2312 or GBK chinese word
241                     continue;
242                 else
243                     return false;
244             }
245             return true;
246         }
247  
248         /// <summary>
249         /// 判断一个word是否为GB2312编码的汉字
250         /// </summary>
251         /// <param name="word"></param>
252         /// <returns></returns>
253         static public bool IsGBCode(string word)
254         {
255             byte[] bytes = Encoding.GetEncoding("GB2312").GetBytes(word);
256             if (bytes.Length <= 1)  // if there is only one byte, it is ASCII code or other code
257                 return false;
258             else
259             {
260                 byte byte1 = bytes[0];
261                 byte byte2 = bytes[1];
262                 if (byte1 >= 176 && byte1 <= 247 && byte2 >= 160 && byte2 <= 254)    //判断是否是GB2312
263                     return true;
264                 else
265                     return false;
266             }
267         }
268  
269         /// <summary>
270         /// 判断一个word是否为GBK编码的汉字
271         /// </summary>
272         /// <param name="word"></param>
273         /// <returns></returns>
274         static public bool IsGBKCode(string word)
275         {
276             byte[] bytes = Encoding.GetEncoding("GBK").GetBytes(word.ToString());
277             if (bytes.Length <= 1)  // if there is only one byte, it is ASCII code
278                 return false;
279             else
280             {
281                 byte byte1 = bytes[0];
282                 byte byte2 = bytes[1];
283                 if (byte1 >= 129 && byte1 <= 254 && byte2 >= 64 && byte2 <= 254)     //判断是否是GBK编码
284                     return true;
285                 else
286                     return false;
287             }
288         }
289  
290         /// <summary>
291         /// 判断一个word是否为Big5编码的汉字
292         /// </summary>
293         /// <param name="word"></param>
294         /// <returns></returns>
295         static public bool IsBig5Code(string word)
296         {
297             byte[] bytes = Encoding.GetEncoding("Big5").GetBytes(word.ToString());
298             if (bytes.Length <= 1)  // if there is only one byte, it is ASCII code
299                 return false;
300             else
301             {
302                 byte byte1 = bytes[0];
303                 byte byte2 = bytes[1];
304                 if ((byte1 >= 129 && byte1 <= 254) && ((byte2 >= 64 && byte2 <= 126) || (byte2 >= 161 && byte2 <= 254)))  //判断是否是Big5编码
305                     return true;
306                 else
307                     return false;
308             }
309         }
310  
311         /// <summary>
312         /// 对字符串进行简单的异或加密
313         /// </summary>
314         /// <param name="aStr"></param>
315         /// <param name="aXor"></param>
316         /// <returns>失败返回空字符串</returns>
317         static public string EncryptXOR(string aStr, byte aXor = 0x11)
318         {
319             if (String.IsNullOrEmpty(aStr))
320                 return "";
321             byte[] bb = Encoding.Unicode.GetBytes(aStr);
322             for (int i = 0; i < bb.Length; i++)
323                 bb[i] ^= aXor;
324             return Encoding.Unicode.GetString(bb);
325         }
326  
327         /// <summary>
328         /// 对字符串进行简单的异或解密
329         /// </summary>
330         /// <param name="aStr"></param>
331         /// <param name="aXor"></param>
332         /// <returns>失败返回空字符串</returns>
333         static public string DecryptXOR(string aStr, byte aXor = 0x11)
334         {
335             if (String.IsNullOrEmpty(aStr))
336                 return "";
337             byte[] bb = Encoding.Unicode.GetBytes(aStr);
338             for (int i = 0; i < bb.Length; i++)
339                 bb[i] ^= aXor;
340             return Encoding.Unicode.GetString(bb);
341         }
342  
343         /// <summary>
344         /// 获得字符串中开始和结束字符串中间得字符
345         /// </summary>
346         /// <param name="str">字符串</param>
347         /// <param name="s">开始</param>
348         /// <param name="e">结束</param>
349         /// </summary>
350         public static string GetSubString(string str, string s, string e)
351         {
352             Regex rg = new Regex("(?<=(" + s + "))[.\\s\\S]*?(?=(" + e + "))", RegexOptions.Multiline | RegexOptions.Singleline);
353             return rg.Match(str).Value;
354         }
355  
356         /// <summary>
357         /// 从最后一位验证前面17位的18位身份证号码
358         /// </summary>
359         /// <param name="id"></param>
360         /// <returns></returns>
361         public static bool CheckCardId(string id)
362         {
363             /*  身份证号码的验证及15位升18位算法
364                  18位身份证标准在国家质量技术监督局于1999年7月1日实施的GB11643-1999《公民身份号码》中做了明确的规定。 GB11643-1999《公民身份号码》为GB11643-1989《社会保障号码》的修订版,其中指出将原标准名称"社会保障号码"更名为"公民身份号码",另外GB11643-1999《公民身份号码》从实施之日起代替GB11643-1989。GB11643-1999《公民身份号码》主要内容如下:
365                 一、范围
366                      该标准规定了公民身份号码的编码对象、号码的结构和表现形式,使每个编码对象获得一个唯一的、不变的法定号码。
367                 二、编码对象
368                      公民身份号码的编码对象是具有*国籍的公民。
369                 三、号码的结构和表示形式
370                 1、号码的结构
371                     公民身份号码是特征组合码,由十七位数字本体码和一位校验码组成。排列顺序从左至右依次为:六位数字地址码,八位数字出生日期码,三位数字顺序码和一位数字校验码。
372                 2、地址码
373                     表示编码对象常住户口所在县(市、旗、区)的行政区划代码,按GB/T2260的规定执行。
374                 3、出生日期码
375                     表示编码对象出生的年、月、日,按GB/T7408的规定执行,年、月、日代码之间不用分隔符。
376                 4、顺序码
377                      表示在同一地址码所标识的区域范围内,对同年、同月、同日出生的人编定的顺序号,顺序码的奇数分配给男性,偶数分配给女性。
378                 5、校验码
379                 (1)十七位数字本体码加权求和公式
380                     S = Sum(Ai * Wi),先对前17位数字的权求和
381                     Ai:表示第i位置上的身份证号码数字值
382                     Wi:表示第i位置上的加权因子
383                     Wi: 7 9 10 5 8 4 2 1 6 3 7 9 10 5 8 4 2
384                 (2)计算模         Y = mod(S, 11)
385                 (3)通过模得到对应的校验码
386                     Y:      0 1 2 3 4 5 6 7 8 9 10
387                     校验码: 1 0 X 9 8 7 6 5 4 3 2
388                 四、举例如下:
389                 北京市朝阳区: 11010519491231002X
390                 广东省汕头市: 440524188001010014
391             */
392  
393             int[] wQuan = { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 };
394             string checkWei = "10X98765432";
395  
396             string number17 = id.Substring(0, 17);
397             string number18 = id.Substring(17);
398  
399             int sum = 0;
400             for (int i = 0; i < 17; i++)
401                 sum = sum + Convert.ToInt32(number17[i].ToString()) * wQuan[i];
402  
403             int mod = sum % 11;
404             string result = checkWei[mod].ToString();
405             if (number18.Equals(result, StringComparison.OrdinalIgnoreCase))
406             {
407                 return true;
408             }
409             else
410             {
411                 return false;
412             }
413         }
414  
415         /// <summary>
416         /// 生成一个序列号,根据Guid生成,最短1位,最长33位,默认是4位
417         /// </summary>
418         /// <param name="aLength"></param>
419         /// <returns></returns>
420         public static string CreateSerialNumber(int aLength = 4)
421         {
422             if (aLength < 1)
423                 aLength = 1;
424             if (aLength > 33)
425                 aLength = 33;
426  
427             string str = string.Empty;
428             string codeStr = string.Empty;
429             string guidStr = Guid.NewGuid().ToString().Replace("-", "");
430             int guidStrLen = guidStr.Length;
431             Random rnd = new Random(int.Parse(DateTime.Now.ToString("MMddHHmmsss")));
432  
433             for (int i = 0; i < aLength; i++)
434             {
435                 int index = rnd.Next(0, guidStrLen - 1);
436                 str += guidStr.Substring(index, 1);
437             }
438  
439             return str.ToUpper();
440         }
441  
442         /// <summary>
443         /// 反转字符串
444         /// </summary>
445         /// <param name="aString"></param>
446         /// <returns></returns>
447         public static string ReverseString(string aString)
448         {
449             if (string.IsNullOrEmpty(aString))
450                 return "";
451             Char[] LS_Str = aString.ToCharArray();
452             Array.Reverse(LS_Str);
453  
454             return new String(LS_Str);//反转字符串
455         }
456  
457         /// <summary>
458         /// 全角转半角
459         /// </summary>
460         /// <param name="aString"></param>
461         /// <returns></returns>
462         public static string QjToBj(string aString)
463         {
464             string QJstr = aString;
465             char[] c = QJstr.ToCharArray();
466             for (int i = 0; i < c.Length; i++)
467             {
468                 byte[] b = System.Text.Encoding.Unicode.GetBytes(c, i, 1);
469                 if (b.Length == 2)
470                 {
471                     if (b[1] == 255)
472                     {
473                         b[0] = (byte)(b[0] + 32);
474                         b[1] = 0;
475                         c[i] = System.Text.Encoding.Unicode.GetChars(b)[0];
476                     }
477                 }
478             }
479             string strNew = new string(c);
480             return strNew;
481         }
482  
483         /// <summary>
484         /// 获得汉字拼音的的第一个字母
485         /// </summary>
486         /// <param name="aText"></param>
487         /// <returns></returns>
488         static public string GetChineseSpellFirstLetter(string aText)
489         {
490             int len = aText.Length;
491             string myStr = "";
492             for (int i = 0; i < len; i++)
493             {
494                 myStr += GetSpell(aText[i]);
495             }
496             return myStr.ToLower();
497         }
498  
499         /// <summary>
500         /// 利用汉字在计算机里面的编码来的到汉字的拼音。
501         /// </summary>
502         /// <param name="aChar"></param>
503         /// <returns></returns>
504         static public string GetSpell(char aChar)
505         {
506             byte[] arrCN = Encoding.Default.GetBytes(aChar.ToString());
507             if (arrCN.Length > 1)
508             {
509                 int area = (short)arrCN[0];
510                 int pos = (short)arrCN[1];
511                 int code = (area << 8) + pos;
512                 int[] areacode = { 45217, 45253, 45761, 46318, 46826, 47010, 47297, 47614, 48119, 48119, 49062, 49324, 49896, 50371, 50614, 50622, 50906, 51387, 51446, 52218, 52698, 52698, 52698, 52980, 53689, 54481 };
513                 for (int i = 0; i < 26; i++)
514                 {
515                     int max = 55290;
516                     if (i != 25) max = areacode[i + 1];
517                     if (areacode[i] <= code && code < max)
518                     {
519                         return Encoding.Default.GetString(new byte[] { (byte)(65 + i) });
520                     }
521                 }
522                 return aChar.ToString();
523             }
524             else
525                 return aChar.ToString();
526         }
527     }

 

C#常用方法二

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