/// <summary>
/// 获取聊天历史记录
/// </summary>
/// <param name="chatId">会话ID</param>
/// <param name="begin">开始时间</param>
/// <param name="end">结束时间</param>
/// <returns>消息集合</returns>
public static List <Message> GetHistoryChatMessage(string chatId, DateTime begin, DateTime end)
{
Trace.WriteLine(string.Format("GetHistoryChatMessage({0},{1},{2})", chatId, begin, end));
return(Provider.GetHistoryChatMessage(chatId, begin, end));
}
