C#截取定长字符串函数.doc

/ / / / / / string public static string CutStr(string str, int length) int i = 0, j = 0; foreach (char chr in str) if (int)chr 127) i += 2; else i+; if (i length) str = str.Substring(0, j) + .; break; j+; return str; /public string CutStr(string sInString,int iCutLength) if(sInString=null | sInString.Length=0 | iCutLengthiCutLength) int iLength=0; for(int i=0;iiCutLength) sInString=sInString.Substring(0,i); break; return sInString;/ public static string CutStr(string stringToSub, int length) Regex regex = new Regex(u4e00-u9fa5+, RegexOptions.Compiled); char stringChar = stringToSub.ToCharArray(); StringBuilder sb = new StringBuilder(); int nLength = 0; for (int i = 0; i stringChar.Length; i+) if (regex.IsMatch(stringChari).ToString() nLength += 2; else nLength = nLength + 1; if (nLength = length) sb.Append(stringChari); else break; if (sb.ToString() != stringToSub) sb.Append(.); return sb.ToString(); / / / C# / / / / ReCutStr public static string CutStr(string string1, int Len1) string ReCutstr = string.Empty; bool Remark = false;/ int n = string1.Length; int TrueLen = 0; int Pcount = 0; / int Gcount = 0; / int Lcount = 0; / char bytes = string1.ToCharArray(); foreach (char chrA in bytes) if (Convert.ToInt32(chrA) = 0 & Convert.ToInt32(chrA) Len1)/ ReCutstr = string1.Substring(0, TrueLen) + .; Remark = true; break; if (!Remark)/ ReCutstr = string1; return ReCutstr; / public static string CutStr(string input,int count) int tempcount = count; if (input = null) return string.Empty; if (input.Length count) try int lencount = 0; int.TryParse(ContainsNumeral(input, count).ToString(), out lncount); count = lencount + count; if (input.Length count) return input.Substring(0, count) + .; else return input; catch return input.Substring(0, tempcount) + .; return input; / / / / / / public static double ContainsNumeral(string input, int count) string linput = input.Substring(0, count); double lcount = 0; int i = 0; /1. for (int k = 0; k 10; k+) if (linput.Contains(k.ToString() lcount += 0.5; i+; /2. /for (int j = 0; j linput.Length; j+) / / for (int k = 0; k 10; k+) / / if (linput.Substring(j,