去掉結尾

/// <summary>
    /// 去掉結尾
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    public static string LostDot(string input)
    {
        if (string.IsNullOrEmpty(input))
        {
            return string.Empty;
        }
        else
        {
            if (input.IndexOf(",") > -1)
            {
                int intLast = input.LastIndexOf(",");
                if ((intLast + 1) == input.Length)
                {
                    return input.Remove(intLast);
                }
                else
                {
                    return input;
                }
            }
            else
            {
                return input;
            }
        }
    }