asp.net 常用類---頁面數據驗證

   public class PageValidate
     {
         private static Regex RegNumber = new Regex(^[0-9]+$);
         private static Regex RegNumberSign = new Regex(^[+-][0-9]+$);
         private static Regex RegDecimal = new Regex(^[0-9]+[.][0-9]+$);
         private static Regex RegDecimalSign = new Regex(^[+-][0-9]+[.][0-9]+$); //等價於^[+-]d+[.]d+$
         private static Regex RegEmail = new Regex(^[w-]+@[w-]+.(comnetorgedumiltvbizinfo)$);//w 英文字母

或數字的字符串，和 [a-zA-Z0-9] 語法一樣
        private static Regex RegCHZN = new Regex([u4e00-u9fa5]);
         public PageValidate()
         {

         }
         #region 數字字符串檢查              
          summary
          檢查Request查詢字符串的鍵值，是否是數字，最大長度限制
          summary
          param name=reqRequestparam
          param name=inputKeyRequest的鍵值param
          param name=maxLen最大長度param
          returns返回Request查詢字符串returns
         public static string FetchInputDigit(HttpRequest req, string inputKey, int maxLen)
         {
              string retVal = string.Empty;
              if(inputKey != null && inputKey != string.Empty)
              {
                   retVal = req.QueryString[inputKey];
                   if(null == retVal)
                       retVal = req.Form[inputKey];
                   if(null != retVal)
                   {
                       retVal = SqlText(retVal, maxLen);
                       if(!IsNumber(retVal))
                            retVal = string.Empty;
                   }
              }

               if(retVal == null)
                   retVal = string.Empty;
              return retVal;
         }       

 

          summary
          是否數字字符串
          summary
          param name=inputData輸入字符串param
          returnsreturns
         public static bool IsNumber(string inputData)
         {
              Match m = RegNumber.Match(inputData);
              return m.Success;
         }       
          summary
          是否數字字符串可帶正負號
          summary
          param name=inputData輸入字符串param
          returnsreturns
         public static bool IsNumberSign(string inputData)
         {
              Match m = RegNumberSign.Match(inputData);
              return m.Success;
         }       
          summary
          是否是浮點數
          summary
          param name=inputData輸入字符串param
          returnsreturns
         public static bool IsDecimal(string inputData)
         {
              Match m = RegDecimal.Match(inputData);
              return m.Success;
         }       
          summary
          是否是浮點數可帶正負號
          summary
          param name=inputData輸入字符串param
          returnsreturns
         public static bool IsDecimalSign(string inputData)
         {
              Match m = RegDecimalSign.Match(inputData);
              return m.Success;
         }
         #endregion
         #region 中文檢測
          summary
          檢測是否有中文字符
          summary
          param name=inputDataparam
          returnsreturns
         public static bool IsHasCHZN(string inputData)
         {
              Match m = RegCHZN.Match(inputData);
              return m.Success;
         }
         #endregion
         #region 郵件地址
          summary
          是否是浮點數可帶正負號
          summary
          param name=inputData輸入字符串param
          returnsreturns
         public static bool IsEmail(string inputData)
         {
              Match m = RegEmail.Match(inputData);
              return m.Success;
         }
         #endregion
         #region 其他
          summary
          檢查字符串最大長度，返回指定長度的串
          summary
          param name=sqlInput輸入字符串param
          param name=maxLength最大長度param
          returnsreturns         
         public static string SqlText(string sqlInput, int maxLength)
         {            
              if(sqlInput != null && sqlInput != string.Empty)
              {
                   sqlInput = sqlInput.Trim();                            
                   if(sqlInput.Length  maxLength)按最大長度截取字符串
                       sqlInput = sqlInput.Substring(0, maxLength);
              }
              return sqlInput;
         }       
          summary
          字符串編碼
          summary
          param name=inputDataparam
          returnsreturns
         public static string HtmlEncode(string inputData)
         {
              return HttpUtility.HtmlEncode(inputData);
         }

          summary
          設置Label顯示Encode的字符串
          summary
          param name=lblparam
          param name=txtInputparam
         public static void SetLabel(Label lbl, string txtInput)
         {
              lbl.Text = HtmlEncode(txtInput);
         }

         public static void SetLabel(Label lbl, object inputObj)
         {
              SetLabel(lbl, inputObj.ToString());
         }       
         #endregion
}