public void SaveMsg(Model.MsgModel model)
{
DAL.MsgDAL dal = new DAL.MsgDAL();
dal.DeleteList(" SendDeviceId='" + model.SendDeviceId + "' and TargetDeviceId='" + model.TargetDeviceId + "' and MsgTextId='" + model.MsgTextId + "' ");
dal.Add(model);
}