最近做拼XML,注意2点

1.StringBuilder这个东西在调试的时候，如果过长就只显示一半，我还以为是长度限制，郁闷半天╮(╯▽╰)╭

2.xml有5个特殊字符串要过滤的

代码

        #region  xml字符转义
         public   static   string  ReplaceESC( string  str)
        {
             return  str.Replace( " & " ,  " &amp; " ).Replace( " &nbsp; " ,  "   " ).Replace( " < " ,  " &lt; " ).Replace( " > " ,  " &gt; " ).Replace( " ' " ,  " &apos; " ).Replace( " \ "" ,  " & quot; " );
        }
         #endregion

 3.declare @da datetime
set @da ='2001-02-12'
select dateadd(DAY,1,@da) 添加一天，具体用法如下

  select   IndexID  from Tab_CollectComment  
       where   CommentDate between  @BeginDate  and  dateadd(DAY,1,@BeginDate  )
 

4。C#判断时间段

 

 

代码

    public   static  Boolean DateInBeginEnd( string  now,  string  begin,  string  end)
        {
             if  (DateTime.Now  >  DateTime.Parse(begin)  &&  DateTime.Now  <  DateTime.Parse(end))
            {
                 return   true ; // 再此时间段
            }
             return   false ;
        }

 

 

5。C#操作cookie

    #region 操作Cookie
   
        public static void SetCookie(string CookieName, string CookieValue)
        {
            CookieValue = Encrypt(CookieValue);
            System.Web.HttpContext.Current.Response.Cookies[CookieName].Value = CookieValue;
            //System.Web.HttpContext.Current.Response.Cookies[CookieName].Domain = "it168.com";
        }
        public static void SetCookie(string CookieName, string CookieValue, DateTime ExpireTime)
        {
            System.Web.HttpContext.Current.Response.Cookies[CookieName].Expires = ExpireTime;
            SetCookie(CookieName, CookieValue);
        }

        /// 读取加密过的COOKIE
        public static string GetCookie(string CookieName)
        {
            string CookieValue = null;
            if (System.Web.HttpContext.Current.Request.Cookies[CookieName] != null)
            {
                CookieValue = Decrypt(System.Web.HttpContext.Current.Request.Cookies[CookieName].Value);
            }
            return CookieValue;
        }

        /// 删除COOKIE
        public static void DelCookie(string CookieName)
        {
            SetCookie(CookieName, "", DateTime.Now.AddYears(-1));
        }
        #endregion

 

代码

         #region  过滤掉字符串中所有html元素
         public   static   string  CutAllHtmlElement( string  InputStr)
        {
             return  Regex.Replace(InputStr,  @" <[^>]+> " ,  "" );
        }
         public   static   string  CutAllHtmlElement_All( string  InputStr)
        {
             return  Regex.Replace(InputStr,  @" <([\s\S]*?)> " ,  "" );
        }
         #endregion

代码

         #region  过滤html中危险标签
         public   static   string  CutDangerousHtmlElement( string  html)
        {
            System.Text.RegularExpressions.Regex regex1  =   new  System.Text.RegularExpressions.Regex( @" <script[^>]*>[^>]*<[^>]script[^>]*> " , System.Text.RegularExpressions.RegexOptions.IgnoreCase);
             // System.Text.RegularExpressions.Regex regex2 = new System.Text.RegularExpressions.Regex(@" href *= *[\s\S]*script *:", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
             // System.Text.RegularExpressions.Regex regex3 = new System.Text.RegularExpressions.Regex(@" on[\s\S]*=", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            System.Text.RegularExpressions.Regex regex4  =   new  System.Text.RegularExpressions.Regex( @" <iframe[^>]*>[^>]*<[^>]iframe[^>]*> " , System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            System.Text.RegularExpressions.Regex regex5  =   new  System.Text.RegularExpressions.Regex( @" <frameset[^>]*>[^>]*<[^>]frameset[^>]*> " , System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            System.Text.RegularExpressions.Regex regex6  =   new  System.Text.RegularExpressions.Regex( @" <img (.+?) /> " , System.Text.RegularExpressions.RegexOptions.IgnoreCase);
            html  =  regex1.Replace(html,  "" );  // 过滤<script></script>标记  
             // html = regex2.Replace(html, "");  // 过滤href=javascript: (<a>) 属性  
             // html = regex3.Replace(html, " _disibledevent=");  // 过滤其它控件的on...事件  
            html  =  regex4.Replace(html,  "" );  // 过滤iframe  
            html  =  regex5.Replace(html,  "" );  // 过滤frameset 

            html  =  regex6.Replace(html,  " <img   "   +   " ${1} "   +   "  /> " );

             return  html;
        }
         #endregion

 

代码

         #region  计算两个日期的时间间隔
         ///   <summary>
         ///  计算两个日期的时间间隔
         ///   </summary>
         ///   <param name="DateTime1"> 第一个日期和时间 </param>
         ///   <param name="DateTime2"> 第二个日期和时间 </param>
         ///   <returns></returns>
         public   static   int  DateDiff(DateTime DateTime1, DateTime DateTime2,  int  flag)
        {
             int  dateDiff  =   0 ;

            TimeSpan ts1  =   new  TimeSpan(DateTime1.Ticks);
            TimeSpan ts2  =   new  TimeSpan(DateTime2.Ticks);
            TimeSpan ts  =  ts1.Subtract(ts2);
            dateDiff  =   // ts.Days.ToString() + "天"
                 //  + ts.Hours.ToString() + "小时"
                 // + ts.Minutes.ToString() + "分钟"
                ts.Seconds;  // + "秒";
             if  (flag  ==   1 )
            {
                dateDiff  =  ts.Hours;
            }
             else   if  (flag  ==   2 )
            {
                dateDiff  =  ts.Days;
            }
             return  dateDiff;
        }
         #endregion

判断是中文

代码

         #region  判断是中文
         ///   <summary>
         ///  判断是中文
         ///   </summary>
         ///   <param name="input"></param>
         ///   <returns></returns>
         public   static   bool  IsChineseLetter( string  input)
        {
             bool  isChineseLetter  =   false ;
             if  ( ! string .IsNullOrEmpty(input))
            {
                 int  bC  =   0 ;
                 for  ( int  i  =   0 ; i  <  input.Length; i ++ )
                {
                    Regex rx  =   new  Regex( " ^[\u4e00-\u9fa5]$ " );
                     if  (rx.IsMatch(input[i].ToString()))
                    {
                        bC ++ ;
                    }
                }
                 if  (bC  ==   0 )
                    isChineseLetter  =   false ;
                 else
                    isChineseLetter  =   true ;
            }
             else
            {
                isChineseLetter  =   false ;
            }
             return  isChineseLetter;
        }
         #endregion

 XML 字符转义

 

代码

         #region  xml字符转义
         public   static   string  ReplaceESC( string  str)
        {
             return  str.Replace( " & " ,  " &amp; " ).Replace( " &nbsp; " ,  "   " ).Replace( " < " ,  " &lt; " ).Replace( " > " ,  " &gt; " ).Replace( " ' " ,  " &apos; " ).Replace( " \ "" ,  " & quot; " );
        }
         #endregion
 

 

 

 

HTML字符转义

 

代码

 
         #region  html字符转义
         public   static   string  HtmlFilter( string  str)
        { 
             return  str.Replace( " & " ,  " &amp; " ).Replace( " < " ,  " &lt; " ).Replace( " > " ,  " &gt; " ).Replace( " \ "" ,  " & quot; " );
        }
         #endregion