stringutil 收藏 C#
stringutil 收藏 C#
/// <summary> /// StringUtil 的摘要说明。 /// </summary> public class StringUtil { public StringUtil() { // // TODO: 在此处添加构造函数逻辑 // } /// <summary> /// 功能描述：将字符串转换成参数。 /// </summary> /// <param name="str">需转换的字符串</param> /// <returns></returns> public static string paramChg(string str) { str = "@"+str; return str; } /// <summary> /// 功能描述：从字符串中的尾部删除指定的字符串。 /// </summary> /// <param name="sourceString">原字符串</param> /// <param name="removedString">移除字符串</param> /// <returns>留下的字符串</returns> public static string Remove(string sourceString,string removedString) { try { if(sourceString.IndexOf(removedString)==-1) throw new Exception("原字符串中不包含移除字符串！"); string result=sourceString; int LengthOfsourceString=sourceString.Length; int LengthOfremovedString=removedString.Length; int startIndex=LengthOfsourceString-LengthOfremovedString; string sourceStringSub=sourceString.Substring(startIndex); if(sourceStringSub.ToUpper()==removedString.ToUpper()) { result=sourceString.Remove(startIndex,LengthOfremovedString); } return result; } catch { return sourceString; } } /// <summary> /// 功能描述：从字符串中的指定位置删除指定的字符串。 /// </summary> /// <param name="sourceString">原字符串</param> /// <param name="removedString">移除字符串</param> /// <returns>留下的字符串</returns> public static string StrRemove(string sourceString,string removedString) { try { if(sourceString.IndexOf(removedString)==-1) throw new Exception("原字符串中不包含移除字符串！"); string result=sourceString; int LengthOfremovedString=removedString.Length; if(sourceString.IndexOf(removedString)> 0) { int startIndex=sourceString.IndexOf(removedString); result=sourceString.Remove(startIndex,LengthOfremovedString); } return result; } catch { return sourceString; } } /// <summary> /// 功能描述：获取拆分符右边的字符串。 /// </summary> /// <param name="sourceString">原字符串</param> /// <param name="splitChar">拆分字符</param> /// <returns>右边的字符串</returns> public static string RightSplit(string sourceString,char splitChar) { string result=null; string[] tempStr=sourceString.Split(splitChar); if(tempStr.Length> 0) { result=tempStr[tempStr.Length-1].ToString(); } return result; } /// <summary> /// 功能描述：获取拆分符左边的字符串。 /// </summary> /// <param name="sourceString">原字符串</param> /// <param name="splitChar">拆分字符</param> /// <returns>左边的字符串</returns> public static string LeftSplit(string sourceString,char splitChar) { string result=null; string[] tempStr=sourceString.Split(splitChar); if(tempStr.Length> 0) { result=tempStr[0].ToString(); } return result; } /// <summary> /// 功能描述：去掉最后一个逗号后面的字符串。 /// </summary> /// <param name="sourceString">原字符串</param> /// <param name="splitChar">拆分字符</param> /// <returns>左边的字符串</returns> public static string DelLsatComma(string sourceString) { if(sourceString.IndexOf(",")==-1) { return sourceString; } return sourceString.Substring(0,sourceString.LastIndexOf(",")); } /// <summary> /// 功能描述：删除不可见字符。 /// </summary> /// <param name="sourceString">原字符串</param> /// <returns></returns> public static string DeleteUnVisibleChar(string sourceString) { System.Text.StringBuilder strBuilder=new System.Text.StringBuilder(131); for(int i=0;i<sourceString.Length;i++) { int Unicode=sourceString[i]; if(Unicode>=16) { strBuilder.Append(sourceString[i].ToString()); } } return strBuilder.ToString(); } /// <summary> /// 功能描述：获取数组元素的合并字符串。 /// </summary> /// <param name="stringArray">字符串数组</param> /// <returns></returns> public static string GetArrayString(string[] stringArray) { string totalString=null; for(int i=0;i<stringArray.Length;i++) { totalString=totalString+stringArray[i]; } return totalString; } /// <summary> /// 功能描述：获取某一字符串在字符串数组中出现的次数。 /// </summary> /// <param name="stringArray">字符串数组</param> /// <param name="findString">某一字符串</param> /// <returns></returns> public static int GetStringCount(string[] stringArray,string findString) { int count=0; string totalString=GetArrayString(stringArray); int findStringLength=findString.Length; string subString=totalString; while(subString.IndexOf(findString)>=0) { subString=subString.Substring(subString.IndexOf(findString)+findStringLength); count+=1; } return count; } /// <summary> /// 功能描述：获取某一字符串在字符串中出现的次数。 /// </summary> /// <param name="sourceString">字符串</param> /// <param name="findString">某一字符串</param> /// <returns></returns> public static int GetStringCount(string sourceString,string findString) { int count=0; int findStringLength=findString.Length; string subString=sourceString; while(subString.IndexOf(findString)>=0) { subString=subString.Substring(subString.IndexOf(findString)+findStringLength); count+=1; } return count; } /// <summary> /// 功能描述：截取从startString开始到原字符串结尾的所有字符。 /// </summary> /// <param name="sourceString">字符串</param> /// <param name="startString">某一字符串</param> /// <returns></returns> public static string GetSubstring(string sourceString,string startString) { int startIndex=sourceString.IndexOf(startString); if(startIndex>0) return sourceString.Substring(startIndex); return sourceString; } /// <summary> /// 功能描述：按字节数取出字符串的长度。 /// </summary> /// <param name="sourceString">要计算的字符串</param> /// <returns>字符串的字节数</returns> public static int GetByteCount(string sourceString) { int itnCharCount=0; for(int i=0;i<sourceString.Length;i++) { if(System.Text.UTF8Encoding.UTF8.GetByteCount(sourceString.Substring(i,1))==3) { itnCharCount=itnCharCount+2; } else { itnCharCount=itnCharCount+1; } } return itnCharCount; } /// <summary> /// 功能描述：按字节数要在字符串的位置。 /// </summary> /// <param name="intIns">字符串的位置</param> /// <param name="strTmp">要计算的字符串</param> /// <returns>字节的位置</returns> public static int GetByteIndex(int intIns,string strTmp) { int intReIns=0; if(strTmp.Trim()=="") { return intIns; } for(int i=0;i<strTmp.Length;i++) { if(System.Text.UTF8Encoding.UTF8.GetByteCount(strTmp.Substring(i,1))==3) { intReIns=intReIns+2; } else { intReIns=intReIns+1; } if(intReIns>=intIns) { intReIns=i+1; break; } } return intReIns; } /// <summary> /// 返回路径分割符号"/"最后一个字符串。 /// </summary> /// <param name="sourceStr">原字符串</param> /// <param name="splitChar">分割符号</param> /// <returns></returns> public static string getLastStr(string sourceStr,char splitChar) { string[] strArr=sourceStr.Split(splitChar); string lastStr=strArr[strArr.Length-1]; if(lastStr=="") return strArr[strArr.Length-2]; return lastStr; } /// <summary> /// 获取路径最后一个分隔符"/"左边的全部字符串 /// </summary> /// <param name="sourceStr"></param> /// <param name="splitChar">分隔符</param> /// <returns></returns> public static string getLeftStr(string sourceStr,char splitChar) { string[] strArr=sourceStr.Split(splitChar); int length=sourceStr.Length-getLastStr(sourceStr,'//').Length; string leftStr=sourceStr.Substring(0,length); return leftStr; } /// <summary> /// 编码字符串 /// </summary> /// <param name="str"></param> /// <returns></returns> public static string Encode(string str) { str = str.Replace("<p>", "<br>"); str = str.Replace("</p>", ""); str = str.Replace(".", "．"); str = str.Replace("'", "''"); str = str.Replace(":", "："); // str = str.Replace("<", "<"); // str = str.Replace(">", ">"); str = str.Replace("//", "／／"); str = str.Replace("http", "ｈｔｔｐ"); str = str.Replace("js", "ｊｓ"); str = str.Replace("gif", "ｇｉｆ"); return str; } public static string SqlEncode(string str) { str = str.Replace("'", "''"); return str; } /// <summary> /// 解码字符串 /// </summary> /// <param name="str"></param> /// <returns></returns> public static string Decode(string str) { str = str.Replace("<br>", "/n"); //str = str.Replace(">", ">"); //str = str.Replace("<", "<"); str = str.Replace(" ", " "); str = str.Replace(""", "/""); return str; } /// <summary> /// 文本域的html编码 /// </summary> /// <param name="str"></param> /// <returns></returns> public static string HtmlEncode(string str) { str = str.Replace("'", "''"); str = str.Replace("/"", """); str = str.Replace(" ", " "); // str = str.Replace("<", "<"); // str = str.Replace(">", ">"); str = str.Replace("/n", "<br>"); str = str.Replace("//", "／／"); str = str.Replace("http", "ｈｔｔｐ"); str = str.Replace("js", "ｊｓ"); str = str.Replace("gif", "ｇｉｆ"); str = str.Replace("com", "ｃｏｍ"); str = str.Replace(".", "．"); return str; } /// <summary> /// 文本域的html解码 /// </summary> /// <param name="str"></param> /// <returns></returns> public static string HtmlDecode(string str) { // str = str.Replace(">", ">"); // str = str.Replace("<", "<"); str = str.Replace(" ", " "); str = str.Replace(""", "/""); str = str.Replace("''","'"); str = str.Replace("<br>", "/n"); return str; } /// <summary> /// 出去空格，并见对尖括号内的空格加入。 /// </summary> /// <param name="contStr"></param> /// <returns></returns> public static string ReplaceStr(string contStr) { contStr = System.Text.RegularExpressions.Regex.Replace(contStr,"//s"," "); int y,z; z = 0; int i = 0; do { y = contStr.IndexOf("<",z); if(y>=0) { z = contStr.IndexOf(">",y); if(z >= 0) { i += contStr.Substring(y,z-y+1).Replace(" "," ").Length + 4; //统计超级链接标签占用的字符数 string tStr1, tStr2; tStr1 = contStr.Substring(0,z+1); tStr2 = contStr.Substring(z+1); contStr = tStr1.Replace(tStr1.Substring(y,z-y+1),tStr1.Substring(y,z-y+1).Replace(" "," "))+tStr2; } else { z = y+1; if(z > contStr.Length-1) break; } } } while(y>=0 && z <= contStr.Length-1); return contStr; } }