asp.net常用公共类方法

 

/// <summary>
    /// 去掉字符串传中的制表符（(char)10,(char)13,\r,\n,\t）
    /// </summary>
    /// <param name="flag">需要去除制表符字符串</param>
    /// <returns>去除制表符后的的字符串</returns>
    public static string TrimString(string flag)
    {
        string char10 = ((char)10).ToString();
        string char13 = ((char)13).ToString();
        return flag.Replace(char10, "").Replace(char13, "").Replace(@"\r", "").Replace(@"\t", "").Replace(@"\n", "");
    }

    /// <summary>
    /// 截取字符串的长度
    /// </summary>
    /// <param name="obj"></param>
    /// <param name="length"></param>
    /// <returns></returns>
    public static string CutString(object obj, int length)
    {
        string msg = "";
        if (obj != null)
        {
            msg = obj.ToString();
            if (msg.Length > length)
            {
                return msg.Substring(0, length) + "...";
            }
        }
        return msg;
    }
    /// <summary>
    /// 判断是否为整数
    /// </summary>
    /// <param name="str"></param>
    /// <returns></returns>
    public static bool IsNumeric(object str)
    {
        bool flag = true;
        if (str != null)
        {
            if (Regex.IsMatch(str.ToString(), @"^\d+$"))
                flag = true;
            else
                flag = false;
        }
        else
            flag = false;
        return flag;
    }
    /// <summary>
    /// 转换时间
    /// </summary>
    /// <param name="obj"></param>
    /// <param name="type"></param>
    /// <returns></returns>
    public static string ConverToTime(object obj, string type)
    {
        if (obj != null)
        {
            string time = obj.ToString();
            if (type.Equals("full"))
            {
                if (time.Length > 10)
                {
                    return time;
                }
            }
            return Convert.ToDateTime(time).ToShortDateString();
        }
        return "";
    }