asp.net後台驗證類

/// <summary>
    /// 提供經常需要使用的一些驗證邏輯。 比如 郵箱是否合法
    /// </summary>
    public class Validator
    {
        /// <summary>
        /// 檢查一個字串是否可以轉化為日期，一般用於驗證使用者輸入日期的合法性。
        /// </summary>
        /// <param name="_value">需驗證的字串。</param>
        /// <returns>是否可以轉化為日期的bool值。</returns>
        public static bool IsStringDate(string _value)
        {
            DateTime dTime;
            try
            {
                dTime = DateTime.Parse(_value);
            }
            catch (FormatException e)
            {
                //日期格式不正確時
                Console.WriteLine(e.Message);
                return false;
            }
            return true;
        }
        /// <summary>
        /// 檢測是否有中文字元
        /// </summary>
        /// <param name="inputData"></param>
        /// <returns></returns>
        public static bool IsHasCHZN(string inputData)
        {
            Regex RegCHZN = new Regex("[/u4e00-/u9fa5]");
            Match m = RegCHZN.Match(inputData);
            return m.Success;
        }
        /// <summary>
        /// 檢查一個字串是否是純數字構成的，一般用於查詢字串參數的有效性驗證。
        /// </summary>
        /// <param name="_value">需驗證的字串。。</param>
        /// <returns>是否合法的bool值。</returns>
        public static bool IsNumeric(string _value)
        {
            return Validator.QuickValidate("^[1-9]*[0-9]*$", _value);
        }

        /// <summary>
        /// 檢查一個字串是否是純字母和數字構成的，一般用於查詢字串參數的有效性驗證。
        /// </summary>
        /// <param name="_value">需驗證的字串。</param>
        /// <returns>是否合法的bool值。</returns>
        public static bool IsLetterOrNumber(string _value)
        {
            return Validator.QuickValidate("^[a-zA-Z0-9_]*$", _value);
        }

        /// <summary>
        /// 判斷是否是數字，包括小數和整數。
        /// </summary>
        /// <param name="_value">需驗證的字串。</param>
        /// <returns>是否合法的bool值。</returns>
        public static bool IsNumber(string _value)
        {
            return Validator.QuickValidate("^(0|([1-9]+[0-9]*))(.[0-9]+)?$", _value);
        }

        /// <summary>
        /// 快速驗證一個字串是否符合指定的Regex。
        /// </summary>
        /// <param name="_express">Regex的內容。</param>
        /// <param name="_value">需驗證的字串。</param>
        /// <returns>是否合法的bool值。</returns>
        public static bool QuickValidate(string _express, string _value)
        {
            System.Text.RegularExpressions.Regex myRegex = new System.Text.RegularExpressions.Regex(_express);
            if (_value.Length == 0)
            {
                return false;
            }
            return myRegex.IsMatch(_value);
        }
        /// <summary>
        /// 判斷一個字串是否為郵件
        /// </summary>
        /// <param name="_value"></param>
        /// <returns></returns>
        public static bool IsEmail(string _value)
        {
            Regex regex = new Regex(@"^/w+([-+.]/w+)*@(/w+([-.]/w+)*/.)+([a-zA-Z]+)+$", RegexOptions.IgnoreCase);
            return regex.Match(_value).Success;
        }
        /// <summary>
        /// 判斷一個字串是否為ID格式
        /// </summary>
        /// <param name="_value"></param>
        /// <returns></returns>
        public static bool IsIDCard(string _value)
        {
            Regex regex;
            string[] strArray;
            DateTime time;
            if ((_value.Length != 15) && (_value.Length != 0x12))
            {
                return false;
            }
            if (_value.Length == 15)
            {
                regex = new Regex(@"^(/d{6})(/d{2})(/d{2})(/d{2})(/d{3})$");
                if (!regex.Match(_value).Success)
                {
                    return false;
                }
                strArray = regex.Split(_value);
                try
                {
                    time = new DateTime(int.Parse("19" + strArray[2]), int.Parse(strArray[3]), int.Parse(strArray[4]));
                    return true;
                }
                catch
                {
                    return false;
                }
            }
            regex = new Regex(@"^(/d{6})(/d{4})(/d{2})(/d{2})(/d{3})([0-9Xx])$");
            if (!regex.Match(_value).Success)
            {
                return false;
            }
            strArray = regex.Split(_value);
            try
            {
                time = new DateTime(int.Parse(strArray[2]), int.Parse(strArray[3]), int.Parse(strArray[4]));
                return true;
            }
            catch
            {
                return false;
            }
        }
        /// <summary>
        /// 判斷一個字串是否為Int
        /// </summary>
        /// <param name="_value"></param>
        /// <returns></returns>
        public static bool IsInt(string _value)
        {
            Regex regex = new Regex(@"^(-){0,1}/d+$");
            if (regex.Match(_value).Success)
            {
                if ((long.Parse(_value) > 0x7fffffffL) || (long.Parse(_value) < -2147483648L))
                {
                    return false;
                }
                return true;
            }
            return false;
        }

        /// <summary>
        /// 判斷一個字串是否為手機號碼
        /// </summary>
        /// <param name="_value"></param>
        /// <returns></returns>
        public static bool IsMobileNum(string _value)
        {
            Regex regex = new Regex(@"^13/d{9}$", RegexOptions.IgnoreCase);
            return regex.Match(_value).Success;
        }
        /// <summary>
        /// 判斷一個字串是否為電話號碼
        /// </summary>
        /// <param name="_value"></param>
        /// <returns></returns>
        public static bool IsPhoneNum(string _value)
        {
            Regex regex = new Regex(@"^(86)?(-)?(0/d{2,3})?(-)?(/d{7,8})(-)?(/d{3,5})?$", RegexOptions.IgnoreCase);
            return regex.Match(_value).Success;
        }
        /// <summary>
        /// 判斷一個字串是否為網址
        /// </summary>
        /// <param name="_value"></param>
        /// <returns></returns>
        public static bool IsUrl(string _value)
        {
            Regex regex = new Regex(@"(http://)?([/w-]+/.)*[/w-]+(/[/w- ./?%&=]*)?", RegexOptions.IgnoreCase);
            return regex.Match(_value).Success;
        }
        /// <summary>
        /// 判斷一個字串是否為字母加數字
        /// Regex("[a-zA-Z0-9]?"
        /// </summary>
        /// <param name="_value"></param>
        /// <returns></returns>
        public static bool IsWordAndNum(string _value)
        {
            Regex regex = new Regex("[a-zA-Z0-9]?");
            return regex.Match(_value).Success;
        }
        /// <summary>
        /// 把字串轉成日期
        /// </summary>
        /// <param name="_value">字串</param>
        /// <param name="_defaultValue">預設值</param>
        /// <returns></returns>
        public static DateTime StrToDate(string _value, DateTime _defaultValue)
        {
            if (IsStringDate(_value))
                return Convert.ToDateTime(_value);
            else
                return _defaultValue;
        }
        /// <summary>
        /// 把字串轉成整型
        /// </summary>
        /// <param name="_value">字串</param>
        /// <param name="_defaultValue">預設值</param>
        /// <returns></returns>
        public static int StrToInt(string _value, int _defaultValue)
        {
            if (IsNumber(_value))
                return int.Parse(_value);
            else
                return _defaultValue;
        }
    }