常用验证方法

#region 验证邮箱

public static bool IsEmail(string email)
{
    String strExp = @"\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*";
    Regex r = new Regex(strExp);
    Match m = r.Match(email);
    return m.Success;
}

#endregion

#region
       IsSafeSqlString 检测是否有Sql危险字符
        /// <summary>
         /// 检测是否有Sql危险字符
        /// </summary>
         /// <param name="targetString">目标字符串</param>
         /// <returns>是则返加true 不是则返回 false</returns>
         public static bool IsSafeSqlString(string targetString)
         {
             return !Regex.IsMatch(targetString, @"[-|;|,|\/|| |
| 
|\}|\{|%|@|\*|!|\']");
         }
         #endregion      

 

        #region RemoveUnsafeString 过滤脚本注入和SQL注入字符
        /// <summary>
         /// 过滤脚本注入和SQL注入字符
        /// </summary>
         /// <param name="targetString">目标字符串</param>
         /// <returns>过滤后的字符串</returns>
         public static string RemoveUnsafeString(string targetString)
         {
             if (string.IsNullOrEmpty(targetString))
             {
                 return targetString;
             }
             targetString = Regex.Replace(targetString, @"<script[^>]*?>.*?</script>", string.Empty, RegexOptions.IgnoreCase);
             return Regex.Replace(targetString, @"[-|;|,|\/|| |
| 
|\}|\{|%|@|\*|!|\']", string.Empty, RegexOptions.IgnoreCase);
         }
         #endregion        

        #region IsIP 判断是否为IP
         /// <summary>
         /// 是否为IP
         /// </summary>
         /// <param name="targetString">目标字符串</param>
         /// <returns>是则返加true 不是则返回 false</returns>
         public static bool IsIP(string targetString)
         {
             return Regex.IsMatch(targetString, @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$");
         }
         #endregion        

 

        #region IsNumeric 判断对象是否为Int32类型的数字
        /// <summary>
         /// 判断对象是否为Int32类型的数字
        /// </summary>
         /// <param name="target">传入参数</param>
         /// <returns>是则返加true 不是则返回 false</returns>
         public static bool IsNumeric(object target)
         {
             if (target != null)
             {
                 return IsNumeric(target.ToString());
             }
             return false;
         }
         #endregion

 

        #region IsNumeric 判断字符串是否为Int32类型的数字
        /// <summary>
         /// 判断字符串是否为Int32类型的数字
        /// </summary>
         /// <param name="targetString">传入参数</param>
         /// <returns>是则返加true 不是则返回 false</returns>
         public static bool IsNumeric(string targetString)
         {
             if (targetString != null)
             {
                 string @string = targetString;
                 if (@string.Length > 0 && @string.Length <= 11 && Regex.IsMatch(@string, @"^[-]?[0-9]*[.]?[0-9]*$"))
                 {
                     if ((@string.Length < 10) || (@string.Length == 10 && @string[0] == '1') || (@string.Length == 11 && @string[0] == '-' && @string[1] == '1'))
                     {
                         return true;
                     }
                 }
             }
             return false;
         }
         #endregion

 

        #region IsPositiveInteger 验证是否为正整数
        /// <summary>
         /// 验证是否为正整数
        /// </summary>
         /// <param name="targetString">传入参数</param>
         /// <returns>是则返加true 不是则返回 false</returns>
         public static bool IsPositiveInteger(string targetString)
         {
             return Regex.IsMatch(targetString, @"^[0-9]*$");
         }
         #endregion

 

        #region IsDouble 判断对象是否为Double类型
        /// <summary>
         /// 是否为Double类型
        /// </summary>
         /// <param name="target">传入参数</param>
         /// <returns>是则返加true 不是则返回 false</returns>
         public static bool IsDouble(object target)
         {
             if (target != null)
             {
                 return Regex.IsMatch(target.ToString(), @"^([0-9])[0-9]*(\.\w*)?$");
             }
             return false;
         }
         #endregion

        #region IsNumericArray 判断给定字符串数据中是否全为Int32类型数字
        /// <summary>
         /// 判断给定字符串数据中是否全为Int32类型数字
        /// </summary>
         /// <param name="targetArray">要确认的字符串数组</param>
         /// <returns>是则返加true 不是则返回 false</returns>
         public static bool IsNumericArray(string[] targetArray)
         {
             if (targetArray == null)
             {
                 return false;
             }
             if (targetArray.Length < 1)
             {
                 return false;
             }
             return targetArray.All(IsNumeric);
         }
         #endregion

 

        #region IsEmail 检测是否符合email格式
        /// <summary>
         ///  检测是否符合email格式
        /// </summary>
         /// <param name="targetString">目标字符串</param>
         /// <returns>是则返加true 不是则返回 false</returns>
         public static bool IsEmail(string targetString)
         {
             return Regex.IsMatch(targetString, @"^[\w\.]+([-]\w+)*@[A-Za-z0-9-_]+[\.][A-Za-z0-9-_]");
         }

        #endregion

        #region IsUrl 检测是否是有效的Url地址
        /// <summary>
         /// 检测是否是有效的Url地址
        /// </summary>
         /// <param name="targetString">目标字符串</param>
         /// <returns>是则返加true 不是则返回 false</returns>
         public static bool IsUrl(string targetString)
         {
             return Regex.IsMatch(targetString,
                                  @"^(http|https)\://([a-zA-Z0-9\.\-]+(\:[a-zA-Z0-9\.&%\$\-]+)*@)*((25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])|localhost|([a-zA-Z0-9\-]+\.)*[a-zA-Z0-9\-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{1,10}))(\:[0-9]+)*(/($|[a-zA-Z0-9\.\,\?\'\\\+&%\$#\=~_\-]+))*$");
         }

        #endregion