Code-Validator：验证字符串字节数长度范围

using System;
using System.Text;

namespace Sp.Common
{
    public class ValidatorHelper
    {
        /// <summary>  
        /// 验证字符串字节数长度范围  
        /// [若要验证固定长度，可传入相同的两个长度数值；每个汉字为两个字节长度]  
        /// </summary>  
        /// <param name="input">待验证的字符串</param>  
        /// <param name="lengthBegin">长度范围起始值（含）</param>  
        /// <param name="lengthEnd">长度范围结束值（含）</param>  
        /// <returns></returns>  
        public static bool IsStringByteLength(string input, int lengthBegin, int lengthEnd)
        {
            //int byteLength = Regex.Replace(input, @"[^\x00-\xff]", "ok").Length;  
            //if (byteLength >= lengthBegin && byteLength <= lengthEnd)  
            //{  
            //    return true;  
            //}  
            //return false;  
            int byteLength = Encoding.Default.GetByteCount(input);
            if (byteLength >= lengthBegin && byteLength <= lengthEnd)
                return true;
            else
                return false;
        }

    }
}