public bool UpdateLoaiCongvan(LoaiCongvanEntity loaiCongvan)
 {
     cnn.Open();
     using (SqlCommand cmd = new SqlCommand("spSualoaicongvan", cnn))
     {
         cmd.CommandType = CommandType.StoredProcedure;
         cmd.Parameters.AddWithValue("@PK_iLoaicongvanID", loaiCongvan.PK_iLoaicongvanID);
         cmd.Parameters.AddWithValue("@sTenLoaicongvan", loaiCongvan.STenloaicongvan);
         int i = cmd.ExecuteNonQuery();
         cnn.Close();
         if (i > 0)
         {
             return(true);
         }
         else
         {
             return(false);
         }
     }
 }
        public List <LoaiCongvanEntity> GetAllLoaiCongvan()
        {
            List <LoaiCongvanEntity> glstLoaiCongvan = new List <LoaiCongvanEntity>();

            cnn.Open();
            using (SqlCommand cmd = new SqlCommand("spGetAllLoaiCongvan", cnn))
            {
                cmd.CommandType = CommandType.StoredProcedure;
                SqlDataReader dar = cmd.ExecuteReader();
                if (dar.HasRows)
                {
                    while (dar.Read())
                    {
                        LoaiCongvanEntity loaiCongvan = new LoaiCongvanEntity();
                        loaiCongvan.PK_iLoaicongvanID = Convert.ToInt64(dar["PK_iLoaicongvanID"]);
                        loaiCongvan.STenloaicongvan   = dar["sTenLoaicongvan"].ToString();
                        glstLoaiCongvan.Add(loaiCongvan);
                    }
                }
                cnn.Close();
                return(glstLoaiCongvan);
            }
        }