字符文本操作类

using System;
using System.Collections;
using System.Text;
using System.Text.RegularExpressions;
using System.Security.Cryptography;

/**/////////////////////////////////////////////////////
///功能：字符文本操作类
///程序：寻梦E
///
///
////////////////////////////////////////////////////

namespace EmanUtils
{
 /**//// <summary>
 /// 字符串帮助类
 /// </summary>
 public class StringHelper
 {
 /**//// <summary>
 /// 构造函数
 /// </summary>
 public StringHelper()
 {

}

        public static bool IsContains(string[] strs, string value)
        {
            if (strs == null)
            {
                return false;
            }

            foreach (string str in strs)
            {
                if (str == value)
                {
                    return true;
                }
            }

return false;
}

字符串过滤#region 字符串过滤

对字符串进行HTML编码，针对(input,Textarea)输入时过滤脚本及HTML编码#region 对字符串进行HTML编码，针对(input,Textarea)输入时过滤脚本及HTML编码
 /**//// <summary>
 /// 对字符串进行HTML编码，针对(input,Textarea)输入时过滤脚本及HTML编码
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static string EncodeToHtml(string source)
 {
 source = source.Trim();
 source = source.Replace("'","''");
 source = source.Replace("\\","＼");
 source = System.Web.HttpContext.Current.Server.HtmlEncode(source);
 source = source.Replace("\r\n"," ");
 source = source.Replace("\n"," ");
 return source;
 }

[否决的]对字符串进行HTML编码，针对(input,Textarea)输入时过滤脚本及HTML编码#region [否决的]对字符串进行HTML编码，针对(input,Textarea)输入时过滤脚本及HTML编码
 /**//// <summary>
 /// [否决的]对字符串进行HTML编码，针对(input,Textarea)输入时过滤脚本及HTML编码 (不符合命名规范，请使用 EncodeToHtml 方法 )
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static string HtmlFilterForInput(string source)
 {
 return EncodeToHtml(source);
 }

还原HTML编码为字符串,还原HTML编码为字符串，用于返回到input或 Textarea 输入框#region 还原HTML编码为字符串,还原HTML编码为字符串，用于返回到input或 Textarea 输入框
 /**//// <summary>
 /// 还原HTML编码为字符串，用于返回到input或 Textarea 输入框
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static string DecodeFormHtml(string source)
 {
 source = source.Trim();
 source = source.Replace(" ","\r\n");
 source = source.Replace(" ","\n");
 source = System.Web.HttpContext.Current.Server.HtmlDecode(source);
 return source;
 }

[否决的]还原HTML编码为字符串,还原HTML编码为字符串，用于返回到input或 Textarea 输入框#region [否决的]还原HTML编码为字符串,还原HTML编码为字符串，用于返回到input或 Textarea 输入框
 /**//// <summary>
 /// [否决的]还原HTML编码为字符串，用于返回到input或 Textarea 输入框 (不符合命名规范，请使用 DecodeFormHtml 方法 )
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static string DeHtmlFilterForInput(string source)
 {
 source = source.Trim();
 source = source.Replace(" ","\r\n");
 source = source.Replace(" ","\n");
 source = System.Web.HttpContext.Current.Server.HtmlDecode(source);
 return source;
 }

检验用户提交的URL参数字符里面是否有非法字符#region 检验用户提交的URL参数字符里面是否有非法字符
 /**//// <summary>
 /// 检验用户提交的URL参数字符里面是否有非法字符,如果有则返回True.防止SQL注入.
 /// </summary>
 /// <param name="str">(string)</param>
 /// <returns>bool</returns>
 public static bool VerifyString(string str)
 {
 string strTmp=str.ToUpper();
 if(strTmp.IndexOf("SELECT ")>=0 || strTmp.IndexOf(" AND ")>=0 || strTmp.IndexOf(" OR ")>=0 ||
 strTmp.IndexOf("EXEC ")>=0 || strTmp.IndexOf("CHAR(")>=0)
 {
 return true;
 }

 strTmp.Replace("'","＇").Replace(";","；");
 return false;
 }

#endregion

过滤 Sql 语句字符串中的注入脚本#region 过滤 Sql 语句字符串中的注入脚本
 /**//// <summary>
 /// 过滤 Sql 语句字符串中的注入脚本
 /// </summary>
 /// <param name="source">传入的字符串</param>
 /// <returns></returns>
 #endregion
 public static string FilterSql(string source)
 {
 //单引号替换成两个单引号
 source = source.Replace("'","''");

//半角封号替换为全角封号，防止多语句执行
source = source.Replace(";","；");

            //半角括号替换为全角括号
            source = source.Replace("(","（");
            source = source.Replace(")","）");

/**////////////////要用正则表达式替换，防止字母大小写得情况////////////////////

            //去除执行存储过程的命令关键字
            source = source.Replace("Exec","");
            source = source.Replace("Execute","");

            //去除系统存储过程或扩展存储过程关键字
            source = source.Replace("xp_","x p_");
            source = source.Replace("sp_","s p_");

//防止16进制注入
source = source.Replace("0x","0 x");

return source;
}

[否决的]过滤 Sql 语句字符串中的注入脚本#region [否决的]过滤 Sql 语句字符串中的注入脚本
 /**//// <summary>
 /// [否决的]过滤 Sql 语句字符串中的注入脚本(请使用 FilterSql 方法 )
 /// </summary>
 /// <param name="source">传入的字符串</param>
 /// <returns></returns>
 #endregion
 public static string SqlFilter(string source)
 {
 return FilterSql(source);
 }

过滤字符串只剩数字#region 过滤字符串只剩数字
 /**//// <summary>
 /// 过滤字符串只剩数字
 /// </summary>
 /// <param name="source">源字符串</param>
 #endregion
 public static string FilterToNumber(string source)
 {
 source = Regex.Replace (source,"[^0-9]*","",System.Text.RegularExpressions.RegexOptions.IgnoreCase );
 return source;
 }

[否决的]过滤字符串只剩数字#region [否决的]过滤字符串只剩数字
 /**//// <summary>
 /// [否决的]过滤字符串只剩数字(请使用 FilterToNumber 方法)
 /// </summary>
 /// <param name="source">源字符串</param>
 #endregion
 public static string NumberFilter(string source)
 {
 source = Regex.Replace (source,"[^0-9]*","",System.Text.RegularExpressions.RegexOptions.IgnoreCase );
 return source;
 }

去除数组内重复元素#region 去除数组内重复元素
 /**//// <summary>
 /// 去除数组内重复元素
 /// </summary>
 /// <param name="arr"></param>
 /// <returns></returns>
 #endregion
 public ArrayList FilterRepeatArrayItem(ArrayList arr)
 {
 //建立新数组
 ArrayList newArr = new ArrayList();

 //载入第一个原数组元素
 if(arr.Count>0)
 {
 newArr.Add(arr[0]);
 }

//循环比较
 for(int i=0;i<arr.Count;i++)
 {
 if(!newArr.Contains(arr[i]))
 {
 newArr.Add(arr[i]);
 }
 }
 return newArr;
 }

在最后去除指定的字符#region 在最后去除指定的字符
 /**//// <summary>
 /// 在最后去除指定的字符
 /// </summary>
 /// <param name="source">参加处理的字符</param>
 /// <param name="cutString">要去除的字符</param>
 /// <returns>返回结果</returns>
 #endregion
 public static string CutLastString(string source, string cutString)
 {
 string result ="";
 int tempIndex=0;

            tempIndex = source.LastIndexOf(cutString);
            if(cutString.Length==(source.Length-tempIndex))
            {
                result = source.Substring(0,tempIndex);
            }
            else
            {
                result = source;
            }

            return result;
        }

利用正则表达式实现UBB代码转换为html代码#region 利用正则表达式实现UBB代码转换为html代码
 /**//// <summary>
 /// 利用正则表达式实现UBB代码转换为html代码
 /// </summary>
 /// <param name="source">待处理的文本内容</param>
 /// <returns>返回正确的html代码</returns>
 #endregion
 public static string UBBCode(string source)
 {
 if(source==null || source.Length==0)
 {
 return "";
 }

 source=source.Replace(" ","");
 //source=source.Replace("<","&lt");
 //source=source.Replace(">","&gt");
 source=source.Replace("\n"," ");
 source = Regex.Replace(source,@"\[url=(?<x>[^\]]*)\](?<y>[^\]]*)\[/url\]",@"<a href=$1 target=_blank>$2</a>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[url\](?<x>[^\]]*)\[/url\]",@"<a href=$1 target=_blank>$1</a>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[email=(?<x>[^\]]*)\](?<y>[^\]]*)\[/email\]",@"<a href=$1>$2</a>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[email\](?<x>[^\]]*)\[/email\]",@"<a href=$1>$1</a>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[flash](?<x>[^\]]*)\[/flash]",@"<OBJECT codeBase=http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=4,0,2,0 classid=clsid:D27CDB6E-AE6D-11cf-96B8-444553540000 width=500 height=400><PARAM NAME=movie VALUE=""$1""><PARAM NAME=quality VALUE=high><embed src=""$1"" quality=high pluginspage='http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash' type='application/x-shockwave-flash' width=500 height=400>$1</embed></OBJECT>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\",@"<IMG src=""$1"" border=0>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[color=(?<x>[^\]]*)\](?<y>[^\]]*)\[/color\]",@"$2",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[face=(?<x>[^\]]*)\](?<y>[^\]]*)\[/face\]",@"$2",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[size=1\](?<x>[^\]]*)\[/size\]",@"$1",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[size=2\](?<x>[^\]]*)\[/size\]",@"$1",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[size=3\](?<x>[^\]]*)\[/size\]",@"$1",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[size=4\](?<x>[^\]]*)\[/size\]",@"$1",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[size=5\](?<x>[^\]]*)\[/size\]",@"$1",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[size=6\](?<x>[^\]]*)\[/size\]",@"$1",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[align=(?<x>[^\]]*)\](?<y>[^\]]*)\[/align\]",@"<align=$1>$2</align>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[fly](?<x>[^\]]*)\[/fly]",@"<marquee width=90% behavior=alternate scrollamount=3>$1</marquee>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[move](?<x>[^\]]*)\[/move]",@"<marquee scrollamount=3>$1</marquee>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[glow=(?<x>[^\]]*),(?<y>[^\]]*),(?<z>[^\]]*)\](?<w>[^\]]*)\[/glow\]",@"<table width=$1 style='filter:glow(color=$2, strength=$3)'>$4</table>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[shadow=(?<x>[^\]]*),(?<y>[^\]]*),(?<z>[^\]]*)\](?<w>[^\]]*)\[/shadow\]",@"<table width=$1 style='filter:shadow(color=$2, strength=$3)'>$4</table>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[center\](?<x>[^\]]*)\[/center\]",@"<center>$1</center>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[b\](?<x>[^\]]*)\[/b\]",@"$1",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[i\](?<x>[^\]]*)\[/i\]",@"$1",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[u\](?<x>[^\]]*)\[/u\]",@"$1",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[code\](?<x>[^\]]*)\[/code\]",@"<pre id=code>$1</pre id=code>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[list\](?<x>[^\]]*)\[/list\]",@"<ul>$1</ul>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[list=1\](?<x>[^\]]*)\[/list\]",@"<ol type=1>$1</ol id=1>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[list=a\](?<x>[^\]]*)\[/list\]",@"<ol type=a>$1</ol id=a>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[\*\](?<x>[^\]]*)\[/\*\]",@"<li>$1</li>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[quote](?<x>.*)\[/quote]",@"<center>—— 以下是引用 ——<table border='1' width='80%' cellpadding='10' cellspacing='0' ><tr><td>$1</td></tr></table></center>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[QT=*([0-9]*),*([0-9]*)\](.[^\[]*)\[\/QT]",@"<embed src=$3 width=$1 height=$2 autoplay=true loop=false controller=true playeveryframe=false cache=false scale=TOFIT bgcolor=#000000 kioskmode=false targetcache=false pluginspage=http://www.apple.com/quicktime/>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[MP=*([0-9]*),*([0-9]*)\](.[^\[]*)\[\/MP]",@"<object align=center classid=CLSID:22d6f312-b0f6-11d0-94ab-0080c74c7e95 class=OBJECT id=MediaPlayer width=$1 height=$2 ><param name=ShowStatusBar value=-1><param name=Filename value=$3><embed type=application/x-oleobject codebase=http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=5,1,52,701 flename=mp src=$3 width=$1 height=$2></embed></object>",RegexOptions.IgnoreCase);
 source = Regex.Replace(source,@"\[RM=*([0-9]*),*([0-9]*)\](.[^\[]*)\[\/RM]",@"<OBJECT classid=clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA class=OBJECT id=RAOCX width=$1 height=$2><PARAM NAME=SRC VALUE=$3><PARAM NAME=CONSOLE VALUE=Clip1><PARAM NAME=CONTROLS VALUE=imagewindow><PARAM NAME=AUTOSTART VALUE=true></OBJECT> <OBJECT classid=CLSID:CFCDAA03-8BE4-11CF-B84B-0020AFBBCCFA height=32 id=video2 width=$1><PARAM NAME=SRC VALUE=$3><PARAM NAME=AUTOSTART VALUE=-1><PARAM NAME=CONTROLS VALUE=controlpanel><PARAM NAME=CONSOLE VALUE=Clip1></OBJECT>",RegexOptions.IgnoreCase);
 return(source);
 }

整理(过滤)以英文逗号分割的字符串#region 整理(过滤)以英文逗号分割的字符串
 /**//// <summary>
 /// 整理(过滤)以英文逗号分割的字符串
 /// </summary>
 /// <param name="source">原字符串</param>
 /// <param name="str2">待清除的字符串，如空格</param>
 /// <returns></returns>
 #endregion
 public static string FilterStringArray(string source,string str2)
 {
 source = source.Replace(str2,"");
 if(source!="")
 {
 source = source.Replace(",,",",");

                if(source[0].ToString()==",")
                {
                    source = source.Substring(1,source.Length-1);
                }

                if(source[source.Length-1].ToString()==",")
                {
                    source = source.Substring(0,source.Length-1);
                }
            }
            return source;
        }

#endregion

字符串组合#region 字符串组合

返回年月日时分秒组合的字符串#region 返回年月日时分秒组合的字符串
 /**//// <summary>
 /// 返回年月日时分秒组合的字符串,如：20050424143012 (2005年4月24日14点30分12秒)
 /// </summary>
 /// <param name="splitString">中间间隔的字符串，如2005\04\24\14\30\12。可以用来建立目录时使用</param>
 /// <returns></returns>
 #endregion
 public static string GetTimeString(string splitString)
 {
 DateTime now = DateTime.Now;

            StringBuilder sb = new StringBuilder();
            sb.Append(now.Year.ToString("0000"));
            sb.Append(splitString);
            sb.Append(now.Month.ToString("00"));
            sb.Append(splitString);
            sb.Append(now.Day.ToString("00"));
            sb.Append(splitString);
            sb.Append(now.Hour.ToString("00"));
            sb.Append(splitString);
            sb.Append(now.Minute.ToString("00"));
            sb.Append(splitString);
            sb.Append(now.Second.ToString("00"));

            return sb.ToString();
        }

返回年月日时分秒组合的字符串#region 返回年月日时分秒组合的字符串
 /**//// <summary>
 /// 返回年月日组合的字符串,如：20050424 (2005年4月24日)
 /// </summary>
 /// <param name="splitString">中间间隔的字符串，如2005\04\24 可以用来建立目录时使用</param>
 /// <returns></returns>
 #endregion
 public static string GetDateString(string splitString)
 {
 DateTime now = DateTime.Now;

#endregion

随机字符串,随机数#region 随机字符串,随机数

        private static string _LowerChar = "abcdefghijklmnopqrstuvwxyz";
        private static string _UpperChar = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        private static string _NumberChar = "0123456789";

获取种子#region 获取种子
 /**//// <summary>
 /// 使用RNGCryptoServiceProvider 做种，可以在一秒内产生的随机数重复率非常
 /// 的低，对于以往使用时间做种的方法是个升级
 /// </summary>
 /// <returns></returns>
 #endregion
 public static int GetNewSeed()
 {
 byte[] rndBytes = new byte[4];
 RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
 rng.GetBytes(rndBytes);
 return BitConverter.ToInt32(rndBytes,0);
 }

取得指定范围内的数字随几数#region 取得指定范围内的数字随几数
 /**//// <summary>
 /// 取得指定范围内的随几数
 /// </summary>
 /// <param name="startNumber">下限数</param>
 /// <param name="endNumber">上限数</param>
 /// <returns>int</returns>
 #endregion
 public static int GetRandomNumber(int startNumber, int endNumber)
 {
 Random objRandom = new Random(GetNewSeed());
 int r = objRandom.Next(startNumber,endNumber);
 return r;
 }

获取指定 ASCII 范围内的随机字符串#region 获取指定 ASCII 范围内的随机字符串
 /**//// <summary>
 /// 获取指定 ASCII 范围内的随机字符串
 /// </summary>
 /// <param name="resultLength">结果字符串长度</param>
 /// <param name="startNumber"> 开始的ASCII值如（33－125）中的 33</param>
 /// <param name="endNumber"> 结束的ASCII值如（33－125）中的 125</param>
 /// <returns></returns>
 #endregion
 public static string GetRandomStringByASCII(int resultLength,int startNumber, int endNumber)
 {
 System.Random objRandom = new System.Random(GetNewSeed());
 string result = null;
 for(int i=0; i<resultLength; i++)
 {
 result += (char)objRandom.Next(startNumber, endNumber);
 }
 return result;
 }

从指定字符串中抽取指定长度的随机字符串#region 从指定字符串中抽取指定长度的随机字符串
 /**//// <summary>
 /// 从指定字符串中抽取指定长度的随机字符串
 /// </summary>
 /// <param name="source">源字符串</param>
 /// <param name="resultLength">待获取随机字符串长度</param>
 /// <returns></returns>
 #endregion
 private static string GetRandomString(string source,int resultLength)
 {
 System.Random objRandom = new System.Random(GetNewSeed());
 string result = null;
 for(int i=0; i<resultLength; i++)
 {
 result += source.Substring(objRandom.Next(0,source.Length-1),1);
 }
 return result;
 }

获取指定长度随机的数字字符串#region 获取指定长度随机的数字字符串
 /**//// <summary>
 /// 获取指定长度随机的数字字符串
 /// </summary>
 /// <param name="resultLength">待获取随机字符串长度</param>
 /// <returns></returns>
 #endregion
 public static string GetRandomNumberString(int resultLength)
 {
 return GetRandomString(_NumberChar,resultLength);
 }

获取指定长度随机的字母字符串（包含大小写字母）#region 获取指定长度随机的字母字符串（包含大小写字母）
 /**//// <summary>
 /// 获取指定长度随机的字母字符串（包含大小写字母）
 /// </summary>
 /// <param name="resultLength">待获取随机字符串长度</param>
 /// <returns></returns>
 #endregion
 public static string GetRandomLetterString(int resultLength)
 {
 return GetRandomString(_LowerChar + _UpperChar, resultLength);
 }

获取指定长度随机的字母＋数字混和字符串（包含大小写字母）#region 获取指定长度随机的字母＋数字混和字符串（包含大小写字母）
 /**//// <summary>
 /// 获取指定长度随机的字母＋数字混和字符串（包含大小写字母）
 /// </summary>
 /// <param name="resultLength">待获取随机字符串长度</param>
 /// <returns></returns>
 #endregion
 public static string GetRandomMixString(int resultLength)
 {
 return GetRandomString(_LowerChar + _UpperChar + _NumberChar, resultLength);
 }

 #endregion

字符串验证#region 字符串验证

判断字符串是否为整型#region 判断字符串是否为整型
 /**//// <summary>
 /// 判断字符串是否为整型
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static bool IsInteger(string source)
 {
 if(source ==null || source =="")
 {
 return false;
 }

 if(Regex.IsMatch(source,"^((\\+)\\d)?\\d*$"))
 {
 return true;
 }
 else
 {
 return false;
 }
 }

Email 格式是否合法#region Email 格式是否合法
 /**//// <summary>
 /// Email 格式是否合法
 /// </summary>
 /// <param name="strEmail"></param>
 #endregion
 public static bool IsEmail(string strEmail)
 {
 return Regex.IsMatch(strEmail,@"^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$");
 }

判断是否IP#region 判断是否IP
 /**//// <summary>
 /// 判断是否IP
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static bool IsIP(string source)
 {
 return Regex.IsMatch(source,@"^(((25[0-5]|2[0-4][0-9]|19[0-1]|19[3-9]|18[0-9]|17[0-1]|17[3-9]|1[0-6][0-9]|1[1-9]|[2-9][0-9]|[0-9])\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9]))|(192\.(25[0-5]|2[0-4][0-9]|16[0-7]|169|1[0-5][0-9]|1[7-9][0-9]|[1-9][0-9]|[0-9]))|(172\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|1[0-5]|3[2-9]|[4-9][0-9]|[0-9])))\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])$");
 }

检查字符串是否为A-Z、0-9及下划线以内的字符#region 检查字符串是否为A-Z、0-9及下划线以内的字符

/**//// <summary>
 /// 检查字符串是否为A-Z、0-9及下划线以内的字符
 /// </summary>
 /// <param name="str">被检查的字符串</param>
 /// <returns>是否有特殊字符</returns>
 #endregion
 public static bool IsLetterOrNumber(string str)
 {
 bool b = System.Text.RegularExpressions.Regex.IsMatch(str,"[a-zA-Z0-9_]");
 return b;
 }

验输入字符串是否含有“/\:.?*|$]”特殊字符#region 验输入字符串是否含有“/\<>:.?*|$]”特殊字符
 /**//// <summary>
 /// 验输入字符串是否含有“/\:.?*|$]”特殊字符
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static bool IsSpecialChar(string source)
 {
 Regex r = new Regex(@"[/\<>:.?*|$]");
 return r.IsMatch(source);
 }

是否全为中文/日文/韩文字符#region 是否全为中文/日文/韩文字符
 /**//// <summary>
 /// 是否全为中文/日文/韩文字符
 /// </summary>
 /// <param name="source">源字符串</param>
 /// <returns></returns>
 #endregion
 public static bool IsChineseChar(string source)
 {
 //中文/日文/韩文: [\u4E00-\u9FA5]
 //英文:[a-zA-Z]
 return Regex.IsMatch(source,@"^[\u4E00-\u9FA5]+$");
 }

是否包含双字节字符(允许有单字节字符)#region 是否包含双字节字符(允许有单字节字符)
 /**//// <summary>
 /// 是否包含双字节字符(允许有单字节字符)
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static bool IsDoubleChar(string source)
 {
 return Regex.IsMatch(source,@"[^\x00-\xff]");
 }

是否为日期型字符串#region 是否为日期型字符串
 /**//// <summary>
 /// 是否为日期型字符串
 /// </summary>
 /// <param name="source">日期字符串(2005-6-30)</param>
 /// <returns></returns>
 #endregion
 public static bool IsDate(string source)
 {
 return Regex.IsMatch(source,@"^((((1[6-9]|[2-9]\d)\d{2})-(0?[13578]|1[02])-(0?[1-9]|[12]\d|3[01]))|(((1[6-9]|[2-9]\d)\d{2})-(0?[13456789]|1[012])-(0?[1-9]|[12]\d|30))|(((1[6-9]|[2-9]\d)\d{2})-0?2-(0?[1-9]|1\d|2[0-8]))|(((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))-0?2-29-))$");
 }

是否为时间型字符串#region 是否为时间型字符串
 /**//// <summary>
 /// 是否为时间型字符串
 /// </summary>
 /// <param name="source">时间字符串(15:00:00)</param>
 /// <returns></returns>
 #endregion
 public static bool IsTime(string source)
 {
 return Regex.IsMatch(source,@"^((20|21|22|23|[0-1]?\d):[0-5]?\d:[0-5]?\d)$");
 }

是否为日期+时间型字符串#region 是否为日期+时间型字符串
 /**//// <summary>
 /// 是否为日期+时间型字符串
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static bool IsDateTime(string source)
 {
 return Regex.IsMatch(source,@"^(((((1[6-9]|[2-9]\d)\d{2})-(0?[13578]|1[02])-(0?[1-9]|[12]\d|3[01]))|(((1[6-9]|[2-9]\d)\d{2})-(0?[13456789]|1[012])-(0?[1-9]|[12]\d|30))|(((1[6-9]|[2-9]\d)\d{2})-0?2-(0?[1-9]|1\d|2[0-8]))|(((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))-0?2-29-)) (20|21|22|23|[0-1]?\d):[0-5]?\d:[0-5]?\d)$ ");
 }

是否为钱币型数据#region 是否为钱币型数据
 /**//// <summary>
 /// 是否为钱币型数据
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static bool IsMoney(string source)
 {
 return false;
 }

#endregion

字符串截取#region 字符串截取

获取字符串的实际长度(按单字节)#region 获取字符串的实际长度(按单字节)
 /**//// <summary>
 /// 获取字符串的实际长度(按单字节)
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static int GetRealLength(string source)
 {
 return System.Text.Encoding.Default.GetByteCount(source);
 }

取得固定长度的字符串(按单字节截取)#region 取得固定长度的字符串(按单字节截取)
 /**//// <summary>
 /// 取得固定长度的字符串(按单字节截取)。
 /// </summary>
 /// <param name="source">源字符串</param>
 /// <param name="resultLength">截取长度</param>
 /// <returns></returns>
 #endregion
 public static string SubString(string source, int resultLength)
 {

            //判断字符串长度是否大于截断长度
            if(System.Text.Encoding.Default.GetByteCount(source) > resultLength)
            {
                //判断字串是否为空
                if(source == null)
                {
                    return "";
                }

//初始化
int i = 0, j = 0;

                //为汉字或全脚符号长度加2否则加1
                foreach (char newChar in source)
                {
                    if ((int)newChar > 127)
                    {
                        i += 2;
                    }
                    else
                    {
                        i ++;
                    }
                    if (i > resultLength)
                    {
                        source = source.Substring(0, j) ;
                        break;
                    }
                    j ++;
                }
            }
            return source;
        }

按长度分割字符串#region 按长度分割字符串
 /**//// <summary>
 /// 按长度分割字符串，如短信
 /// </summary>
 /// <param name="str"></param>
 /// <param name="len"></param>
 /// <returns></returns>
 #endregion
 private ArrayList SplitStringByLength(string str,int len)
 {
 ArrayList arrBlock = new ArrayList();
 int intBlockCount = str.Length/len;
 if(str.Length%len!=0)
 {
 for(int i=0;i<=intBlockCount;i++)
 {
 if((str.Length-i*len) > len)
 arrBlock.Add(str.Substring(i*len,len));
 else
 arrBlock.Add(str.Substring(i*len,(str.Length%len)));
 }
 }
 else
 {
 for(int i=0;i<intBlockCount;i++)
 {
 arrBlock.Add(str.Substring(i*len,len));
 }
 }
 return arrBlock;
 }

#endregion

字符串比较#region 字符串比较

/**//// <summary>
 /// 获得某个字符串在另个字符串中出现的次数
 /// </summary>
 /// <param name="strOriginal">要处理的字符</param>
 /// <param name="strSymbol">符号</param>
 /// <returns>返回值</returns>
 public static int GetStringIncludeCount(string strOriginal,string strSymbol)
 {

 int count=0;
 count = strOriginal.Length - strOriginal.Replace(strSymbol, String.Empty).Length;
 return count;
 }

/**//// <summary>
 /// 获得某个字符串在另个字符串第一次出现时前面所有字符
 /// </summary>
 /// <param name="strOriginal">要处理的字符</param>
 /// <param name="strSymbol">符号</param>
 /// <returns>返回值</returns>
 public static string GetFirstString(string strOriginal,string strSymbol)
 {
 int strPlace=strOriginal.IndexOf(strSymbol);
 if (strPlace!=-1)
 {
 strOriginal=strOriginal.Substring(0,strPlace);
 }
 return strOriginal;
 }

/**//// <summary>
 /// 获得某个字符串在另个字符串最后一次出现时后面所有字符
 /// </summary>
 /// <param name="strOriginal">要处理的字符</param>
 /// <param name="strSymbol">符号</param>
 /// <returns>返回值</returns>
 public static string GetLastString(string strOriginal,string strSymbol)
 {
 int strPlace=strOriginal.LastIndexOf(strSymbol)+strSymbol.Length;
 strOriginal=strOriginal.Substring(strPlace);
 return strOriginal;
 }

/**//// <summary>
 /// 获得两个字符之间第一次出现时前面所有字符
 /// </summary>
 /// <param name="strOriginal">要处理的字符</param>
 /// <param name="strFirst">最前哪个字符</param>
 /// <param name="strLast">最后哪个字符</param>
 /// <returns>返回值</returns>
 public static string GetTwoMiddleFirstStr(string strOriginal,string strFirst,string strLast)
 {
 strOriginal=GetFirstString(strOriginal,strLast);
 strOriginal=GetLastString(strOriginal,strFirst);
 return strOriginal;
 }

/**//// <summary>
 /// 获得两个字符之间最后一次出现时的所有字符
 /// </summary>
 /// <param name="strOriginal">要处理的字符</param>
 /// <param name="strFirst">最前哪个字符</param>
 /// <param name="strLast">最后哪个字符</param>
 /// <returns>返回值</returns>
 public static string GetTwoMiddleLastStr(string strOriginal,string strFirst,string strLast)
 {
 strOriginal=GetLastString(strOriginal,strFirst);
 strOriginal=GetFirstString(strOriginal,strLast);
 return strOriginal;
 }

/**//// <summary>
 /// 发帖过滤词（用“|”号分隔）Application["app_state_FilterWord"]
 /// </summary>
 /// <param name="str">字符串</param>
 /// <param name="chkword">过滤词（用“|”号分隔）</param>
 public static bool CheckBadWords(string str,string chkword)
 {
 if( chkword!=null && chkword!="" )
 {
 string filter = chkword;
 string chk1="";
 string[] aryfilter = filter.Split('|');
 for(int i=0;i<aryfilter.Length;i++)
 {
 chk1 = aryfilter[i].ToString();
 if( str.IndexOf(chk1)>=0 )
 return true;
 }
 }
 return false;
 }

/**//// <summary>
 /// 发帖过滤字(需审核)（不同组间用“§”号分隔，同组内用“,”分隔）Application["app_state_Check_FilterWord"]
 /// </summary>
 /// <param name="str">字符串</param>
 /// <param name="chkword">过滤字(需审核)（不同组间用“§”号分隔，同组内用“,”分隔）</param>
 public static bool CheckilterStr(string str,string chkword)
 {

 if( chkword!=null && chkword!="" )
 {
 string filter = chkword;
 string[] aryfilter = filter.Split('§');
 string[] aryfilter_lei;
 int lei_for=0,j;

for(int i=0;i<aryfilter.Length;i++)
 {
 lei_for=0;
 aryfilter_lei = aryfilter[i].Split(',');
 for(j=0;j<aryfilter_lei.Length;j++)
 {
 if( str.IndexOf(aryfilter_lei[j].ToString())>=0 )
 lei_for += 1;
 }
 if( lei_for == aryfilter_lei.Length )
 return true;
 }
 }
 return false;
 }

#endregion

字符集转换#region 字符集转换

 将 GB2312 值转换为 UTF8 字符串(如：测试 - 娴嬭瘯 )#region 将 GB2312 值转换为 UTF8 字符串(如：测试 -> 娴嬭瘯 )
 /**//// <summary>
 /// 将 GB2312 值转换为 UTF8 字符串(如：测试 -> 娴嬭瘯 )
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static string ConvertGBToUTF8(string source)
 {
 /**//*
 byte[] bytes;
 bytes = System.Text.Encoding.Default.GetBytes(source);
 System.Text.Decoder gbDecoder = System.Text.Encoding.GetEncoding("gb2312").GetDecoder();
 int charCount = gbDecoder.GetCharCount(bytes,0 , bytes.Length);
 Char[] chars = new Char[charCount];
 int charsDecodedCount = gbDecoder.GetChars(bytes,0,bytes.Length,chars,0);
 return new string(chars);
 */

            return Encoding.GetEncoding("GB2312").GetString(Encoding.UTF8.GetBytes(source));
        }

将 UTF8 值转换为 GB2312 字符串 (如：娴嬭瘯 - 测试)#region 将 UTF8 值转换为 GB2312 字符串 (如：娴嬭瘯 -> 测试)
 /**//// <summary>
 /// 将 UTF8 值转换为 GB2312 字符串 (如：娴嬭瘯 -> 测试)
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static string ConvertUTF8ToGB(string source)
 {
 /**//*
 byte[] bytes;
 //模拟编码
 System.Text.UTF8Encoding utf8 = new System.Text.UTF8Encoding();
 bytes = utf8.GetBytes(source);

 //开始解码
 System.Text.Decoder utf8Decoder = System.Text.Encoding.UTF8.GetDecoder();

            int charCount = utf8Decoder.GetCharCount(bytes, 0, bytes.Length);
            Char[] chars = new Char[charCount];
            int charsDecodedCount = utf8Decoder.GetChars(bytes, 0, bytes.Length, chars, 0);

            return new string(chars);
            */

            return Encoding.UTF8.GetString(Encoding.GetEncoding("GB2312").GetBytes(source));
        }

由16进制转为汉字字符串（如：B2E2 - 测）#region 由16进制转为汉字字符串（如：B2E2 -> 测）
 /**//// <summary>
 /// 由16进制转为汉字字符串（如：B2E2 -> 测）
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static string ConvertHexToString(string source)
 {
 byte[] oribyte = new byte[source.Length/2];
 for(int i=0;i<source.Length;i+=2)
 {
 string str = Convert.ToInt32(source.Substring(i,2),16).ToString();
 oribyte[i/2] = Convert.ToByte(source.Substring(i,2),16);
 }
 return System.Text.Encoding.Default.GetString(oribyte);
 }

字符串转为16进制字符串（如：测 - B2E2 ）#region 字符串转为16进制字符串（如：测 -> B2E2 ）
 /**//// <summary>
 /// 字符串转为16进制字符串（如：测 -> B2E2 ）
 /// </summary>
 /// <param name="Word"></param>
 /// <returns></returns>
 #endregion
 public static string ConvertToHex(string Word)
 {
 int i=Word.Length;
 string temp;
 string end="";
 byte[] array = new byte[2];
 int i1 ,i2;
 for(int j=0;j<i;j++)
 {
 temp=Word.Substring(j,1);
 array = System.Text.Encoding.Default.GetBytes(temp);
 if(array.Length.ToString()=="1")
 {
 i1=Convert.ToInt32(array[0]);
 end+=Convert.ToString(i1,16);
 }
 else
 {
 i1=Convert.ToInt32(array[0]);
 i2=Convert.ToInt32(array[1]);
 end+=Convert.ToString(i1,16);
 end+=Convert.ToString(i2,16);
 }
 }
 return end.ToUpper();
 }

字符串转为unicode字符串（如：测试 - 测试）#region 字符串转为unicode字符串（如：测试 -> 测试）
 /**//// <summary>
 /// 字符串转为unicode字符串（如：测试 -> 测试）
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static string ConvertToUnicode(string source)
 {
 StringBuilder sa = new StringBuilder();//Unicode
 string s1;
 string s2;
 for(int i=0;i<source.Length;i++)
 {
 byte[] bt = System.Text.Encoding.Unicode.GetBytes(source.Substring(i,1));
 if(bt.Length>1)//判断是否汉字
 {
 s1=Convert.ToString((short)(bt[1] - '\0'),16);//转化为16进制字符串
 s2=Convert.ToString((short)(bt[0] - '\0'),16);//转化为16进制字符串
 s1=(s1.Length==1?"0":"")+s1;//不足位补0
 s2=(s2.Length==1?"0":"")+s2;//不足位补0
 sa.Append("&#"+Convert.ToInt32(s1+s2,16) +";");
 }
 }

return sa.ToString();
}

字符串转为UTF8字符串（如：测试 - \u6d4b\u8bd5）#region 字符串转为UTF8字符串（如：测试 -> \u6d4b\u8bd5）
 /**//// <summary>
 /// 字符串转为UTF8字符串（如：测试 -> \u6d4b\u8bd5）
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static string ConvertToUTF8(string source)
 {
 StringBuilder sb = new StringBuilder();//UTF8
 string s1;
 string s2;
 for(int i=0;i<source.Length;i++)
 {
 byte[] bt = System.Text.Encoding.Unicode.GetBytes(source.Substring(i,1));
 if(bt.Length>1)//判断是否汉字
 {
 s1=Convert.ToString((short)(bt[1] - '\0'),16);//转化为16进制字符串
 s2=Convert.ToString((short)(bt[0] - '\0'),16);//转化为16进制字符串
 s1=(s1.Length==1?"0":"")+s1;//不足位补0
 s2=(s2.Length==1?"0":"")+s2;//不足位补0
 sb.Append("\\u"+s1+s2);
 }
 }

return sb.ToString();
}

转化为ASC码方法#region 转化为ASC码方法
//转化为ASC码方法

        public string ConvertToAsc(string txt)
        {
            string newtxt="";
            foreach(char c in txt)
            {

                newtxt+=Convert.ToString((int)c);
            }
            return newtxt;

        }
        #endregion

BASE64#region BASE64

/**//// <summary>
 /// 将字符串使用base64算法加密
 /// </summary>
 /// <param name="source">待加密的字符串</param>
 /// <returns>加码后的文本字符串</returns>
 public static string Base64_Encrypt(string source)
 {
 return Convert.ToBase64String(System.Text.Encoding.Default.GetBytes(source));
 }

/**//// <summary>
 /// 从Base64编码的字符串中还原字符串，支持中文
 /// </summary>
 /// <param name="source">Base64加密后的字符串</param>
 /// <returns>还原后的文本字符串</returns>
 public static string Base64_Decrypt(string source)
 {
 return System.Text.Encoding.Default.GetString(Convert.FromBase64String(source));
 }
 #endregion

#endregion

字符串格式化#region 字符串格式化

将字符串反转#region 将字符串反转
 /**//// <summary>
 /// 将字符串反转
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 #endregion
 public static string FormatReverse(string source)
 {
 char[] ca = source.ToCharArray();
 Array.Reverse( ca );
 source = new String( ca );
 return source;
 }

/**//// <summary>
 /// 格式化为小数点两位的字符串(四舍五入)
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 public static string FormatFloat2(double source)
 {
 //double tmp=1223333.24215265652;
 return source.ToString("##,###.000");
 }

/**//// <summary>
 /// 将数字字符串转成货币格式
 /// </summary>
 /// <returns></returns>
 public static string GetMoneyFormat()
 {
 /**//*
 string.Format("${0:###,###,###.##}元",decimalVar);
 --------------------------------------------------------------------------------
 找到system.string的format方法
 string str="99988"
 str=format(str,"##,####.00")
 str value is:99,988.00
 试一下行不行
 --------------------------------------------------------------------------------
 string strMoney="544.54";
 decimal decMoney=System.Convert.ToDecimal(strMoney);
 string money=decMoney.ToString("c");

            如果要转换成不同地区的符号，可以用：
            CultureInfo MyCulture = new CultureInfo("zh-CN");
            String MyString = MyInt.ToString("C", MyCulture);

注意:这里OrderTotal的格式只能是Decimal.

             */
            return "";
        }

/**//// <summary>
 /// 格式化字符串字符串1234567,想变成1,234,567
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 public static string GetO1(string source)
 {
 //return source.ToString("N");
 //return source.ToString("###,###");
 return "";
 }

/**//// <summary>
 /// 十进制数字1转换为字符串0a，在前面补零
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 public static string OctToHex(int source)
 {
 return source.ToString("X2");
 }

/**//// <summary>
 /// 将一个十六进制表示的字符串转成int型？如"0A" = 10
 /// </summary>
 /// <param name="source"></param>
 /// <returns></returns>
 public static string HexToOct(string source)
 {
 return Convert.ToInt16(source,16).ToString();
 }

#endregion

身份证验证#region 身份证验证

从18位身份证获取用户所在省份、生日、性别信息#region 从18位身份证获取用户所在省份、生日、性别信息
 /**//// <summary>
 /// 从18位身份证获取用户所在省份、生日、性别信息
 /// </summary>
 /// <param name="cid">身份证字符串</param>
 /// <returns>如：福建,1978-06-30,男</returns>
 #endregion
 public static string GetCidInfo(string cid)
 {
 string[] aCity = new string[]{null,null,null,null,null,null,null,null,null,null,null,"北京","天津","河北","山西","内蒙古",null,null,null,null,null,"辽宁","吉林","黑龙江",null,null,null,null,null,null,null,"上海","江苏","浙江","安微","福建","江西","山东",null,null,null,"河南","湖北","湖南","广东","广西","海南",null,null,null,"重庆","四川","贵州","云南","西藏",null,null,null,null,null,null,"陕西","甘肃","青海","宁夏","新疆",null,null,null,null,null,"台湾",null,null,null,null,null,null,null,null,null,"香港","澳门",null,null,null,null,null,null,null,null,"国外"};
 double iSum=0;
 System.Text.RegularExpressions.Regex rg = new System.Text.RegularExpressions.Regex(@"^\d{17}(\d|x)$");
 System.Text.RegularExpressions.Match mc = rg.Match(cid);
 if(!mc.Success)
 {
 return "";
 }
 cid = cid.ToLower();
 cid = cid.Replace("x","a");
 if(aCity[int.Parse(cid.Substring(0,2))]==null)
 {
 return "非法地区";
 }
 try
 {
 DateTime.Parse(cid.Substring(6,4)+"-"+cid.Substring(10,2)+"-"+cid.Substring(12,2));
 }
 catch
 {
 return "非法生日";
 }
 for(int i=17;i>=0;i--)
 {
 iSum +=(System.Math.Pow(2,i)%11)*int.Parse(cid[17-i].ToString(),System.Globalization.NumberStyles.HexNumber);

            }
            if(iSum%11!=1)
                return("非法证号");

            return(aCity[int.Parse(cid.Substring(0,2))]+","+cid.Substring(6,4)+"-"+cid.Substring(10,2)+"-"+cid.Substring(12,2)+","+(int.Parse(cid.Substring(16,1))%2==1?"男":"女"));

        }

十五位的身份证号转为十八位的#region 十五位的身份证号转为十八位的
 /**//// <summary>
 /// 十五位的身份证号转为十八位的
 /// </summary>
 /// <param name="source">十五位的身份证号</param>
 /// <returns></returns>
 #endregion
 public static string Cid15To18(string source)
 {
 string[] arrInt = new string[17]{"7", "9", "10", "5", "8", "4", "2", "1", "6", "3", "7", "9", "10", "5", "8", "4", "2"};
 string[] arrCh = new string[11]{"1", "0", "X", "9", "8", "7", "6", "5", "4", "3", "2"};

 int nTemp = 0, i;

 if(source.Length==15)
 {
 source = source.Substring(0,6) + "19" + source.Substring(6,source.Length-6);
 for(i = 0; i < source.Length; i ++)
 {
 nTemp += int.Parse(source.Substring(i, 1)) * int.Parse(arrInt[i]);
 }
 source += arrCh[nTemp % 11];

                return source;
            }
            else
            {
                return null;
            }

        }
        #endregion

随机数#region 随机数
 public static string GetRandNum( int randNumLength )
 {
 System.Random randNum = new System.Random( unchecked( ( int ) DateTime.Now.Ticks ) );
 StringBuilder sb = new StringBuilder( randNumLength );
 for ( int i = 0; i < randNumLength; i++ )
 {
 sb.Append( randNum.Next( 0, 9 ) );
 }
 return sb.ToString();
 }

#endregion

    }

posted @ 2008-01-22 11:21 混世魔王阅读(440) 评论(0) 编辑收藏举报

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