test

haword

` h

圖片2.png

image.png

ello `

   ///   <summary>將指定字符串按指定長(zhǎng)度進(jìn)行剪切  
    ///   
    ///   </summary> 
    ///   <param   name= "oldStr "> 需要截?cái)嗟淖址?</param> 
    ///   <param   name= "maxLength "> 字符串的最大長(zhǎng)度 </param> 
    ///   <param   name= "endWith "> 超過(guò)長(zhǎng)度的后綴 </param> 
    ///   <returns> 如果超過(guò)長(zhǎng)度，返回截?cái)嗪蟮男伦址由虾缶Y，否則，返回原字符串 </returns> 
    public static string StringTruncat(string oldStr, int maxLength, string endWith)
    {
        if (string.IsNullOrEmpty(oldStr))
            //   throw   new   NullReferenceException( "原字符串不能為空 "); 
            return oldStr + endWith;
        if (maxLength < 1)
            throw new Exception("返回的字符串長(zhǎng)度必須大于[0] ");
        if (oldStr.Length > maxLength)
        {
            string strTmp = oldStr.Substring(0, maxLength);
            if (string.IsNullOrEmpty(endWith))
                return strTmp;
            else
                return strTmp + endWith;
        }
        return oldStr;
    }