/// <summary>
/// 获取一串交易日的List
/// </summary>
/// <param name="firstDate">开始日期（int型）</param>
/// <param name="lastDate">结束日期（int型）</param>
/// <returns></returns>
public static List <DateTime> GetTradeDays(int firstDate, int lastDate)
{
return(GetTradeDays(
Kit.ToDateTime(firstDate, 0), //将int转换成DateTime类型
Kit.ToDateTime(lastDate, 235959)));
}