/// <summary>
    /// 是否为日期型字符串
    /// </summary>
    /// <param name="StrSource">日期字符串(2008-05-08)</param>
    /// <returns></returns>
    public static bool IsDate(string StrSource)
    {
      return Regex.IsMatch(StrSource, @"^((((1[6-9]|[2-9]\d)\d{2})-(0");
    }
    /// <summary>
    /// 是否为时间型字符串
    /// </summary>
    /// <param name="source">时间字符串(15:00:00)</param>
    /// <returns></returns>
    public static bool IsTime(string StrSource)
    {
      return Regex.IsMatch(StrSource, @"^((20|21|22|23|[0-1]");
    }
    /// <summary>
    /// 是否为日期+时间型字符串
    /// </summary>
    /// <param name="source"></param>
    /// <returns></returns>
    public static bool IsDateTime(string StrSource)
    {
      return Regex.IsMatch(StrSource, @"^(((((1[6-9]|[2-9]\d)\d{2})-(0");
    }

//是否是整数
  public static bool IsInt(string StrSource)
  {
    return Regex.IsMatch(StrSource, @"^[0-9]*$");
  }

  public static bool IsDate(string strDate)
  {
    if (string.IsNullOrEmpty(strDate))
      return false;
    string s_reg = @"^(";
    Regex reg = new Regex(s_reg);
    if (reg.IsMatch(strDate.ToLower()))
       return true;
    else
       return false;
   }