【峰】ASP.NET中的一些字串操作

iDotNetSpace發表於2008-06-03
ASP.NET字串

一些常用字串操作的程式碼！大家直接看程式碼！！

using System;

namespace Web.StringUtil
{
    /// 
    /// 字串操作工具集
    /// 
    public class StringUtil
    {                    
        public StringUtil()
        {
            //
            // TODO: 在此處新增建構函式邏輯
            //            
        }

        /// 
        /// 從字串中的尾部刪除指定的字串
        /// 
        /// 
        /// 
        /// 
        public static string Remove(string sourceString,string removedString)
        {
            try
            {
                if( sourceString.IndexOf(removedString) < 0 )
                {    
                    throw new Exception("原字串中不包含移除字串！");
                }
                string result = sourceString;
                int lengthOfSourceString = sourceString.Length;
                int lengthOfRemovedString = removedString.Length;
                int startIndex = lengthOfSourceString - lengthOfRemovedString;
                string tempSubString = sourceString.Substring(startIndex);
                if(tempSubString.ToUpper() == removedString.ToUpper())
                {                    
                    result = sourceString.Remove(startIndex,lengthOfRemovedString);
                }
                return result;
            }
            catch
            {
                return sourceString;
            }
        }

        /// 
        /// 獲取拆分符右邊的字串
        /// 
        /// 
        /// 
        /// 
        public static string RightSplit(string sourceString, char splitChar)
        {
            string result=null;
            string[] tempString = sourceString.Split(splitChar);
            if(tempString.Length >0)
            {
                result = tempString[tempString.Length-1].ToString();
            }
            return result;
        }
        
        /// 
        /// 獲取拆分符左邊的字串
        /// 
        /// 
        /// 
        /// 
        public static string LeftSplit(string sourceString, char splitChar)
        {
            string result=null;
            string[] tempString = sourceString.Split(splitChar);
            if(tempString.Length >0)
            {
                result = tempString[0].ToString();
            }
            return result;
        }

        /// 
        /// 去掉最後一個逗號
        /// 
        /// 
        /// 
        public static string DelLastComma(string origin)
        {
            if(origin.IndexOf(",") == -1)
            {
                return origin;
            }
            return origin.Substring(0,origin.LastIndexOf(","));
        }

        /// 
        /// 刪除不可見字元
        /// 
        /// 
        /// 
        public static string DeleteUnVisibleChar(string sourceString)
        {
            System.Text.StringBuilder sBuilder = new System.Text.StringBuilder(131);
            for(int i = 0;i < sourceString.Length; i++)
            {
                int Unicode = sourceString[i];
                if(Unicode >= 16)
                {
                    sBuilder.Append(sourceString[i].ToString());
                }                
            }
            return sBuilder.ToString();
        }

        /// 
        /// 獲取陣列元素的合併字串
        /// 
        /// 
        /// 
        public static string GetArrayString(string[] stringArray)
        {
            string totalString = null;
            for(int i=0;i<stringArray.Length;i++)
            {
                totalString = totalString + stringArray[i];                
            }
            return totalString;
        }

        /// 
        ///        獲取某一字串在字串陣列中出現的次數
        /// 
        /// 
        ///     
        ///         
        ///     
        /// 
        /// 
        ///     
        ///         
        ///     
        /// 
        /// 
        ///     A int value【峰】ASP.NET中的一些字串操作
        /// 
        public static int GetStringCount(string[] stringArray,string findString)
        {
            int count = -1;                        
            string totalString = GetArrayString(stringArray);        
            string subString = totalString;

            while(subString.IndexOf(findString)>=0)
            {
                subString = totalString.Substring(subString.IndexOf(findString));
                count += 1;
            }
            return count;
        }

        /// 
        ///     獲取某一字串在字串中出現的次數
        /// 
        /// 
        ///     
        ///         原字串
        ///     
        /// 
        /// 
        ///     
        ///         匹配字串
        ///     
        /// 
        /// 
        ///     匹配字串數量
        /// 
        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;
        }

        /// 
        /// 擷取從startString開始到原字串結尾的所有字元   
        /// 
        /// 
        ///     
        ///         
        ///     
        /// 
        /// 
        ///     
        ///         
        ///     
        /// 
        /// 
        ///     A string value【峰】ASP.NET中的一些字串操作
        /// 
        public static string GetSubString(string sourceString,string startString)
        {
            try
            {
                int index = sourceString.ToUpper().IndexOf(startString);
                if(index>0)
                {
                    return sourceString.Substring(index);
                }
                return sourceString;
            }
            catch
            {
                return "";
            }
        }

        public static string GetSubString(string sourceString,string beginRemovedString,string endRemovedString)
        {
            try
            {
                if(sourceString.IndexOf(beginRemovedString)!=0)
                {    
                    beginRemovedString = "";
                }

                if(sourceString.LastIndexOf(endRemovedString,sourceString.Length - endRemovedString.Length)<0)
                {
                    endRemovedString = "";
                }
                int startIndex = beginRemovedString.Length;
                int length     = sourceString.Length - beginRemovedString.Length - endRemovedString.Length ;
                if(length>0)
                {
                    return sourceString.Substring(startIndex,length);
                }
                return sourceString;
            }
            catch
            {
                return sourceString;;
            }
        }
        
        /// 
        /// 按位元組數取出字串的長度
        /// 
        /// 要計算的字串
        /// 字串的位元組數
        public static int GetByteCount(string strTmp)
        {
            int intCharCount=0;
            for(int i=0;i<strTmp.Length;i++)
            {
                if(System.Text.UTF8Encoding.UTF8.GetByteCount(strTmp.Substring(i,1))==3)
                {
                    intCharCount=intCharCount+2;
                }
                else
                {
                    intCharCount=intCharCount

來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/12639172/viewspace-330942/，如需轉載，請註明出處，否則將追究法律責任。

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