/// <summary> /// 增加一条记录,返回新的ID号。需要有一个单一主键,并且开启有标识符属性(异步方式) /// </summary> /// <param name="entity">实体模型</param> /// <returns></returns> public virtual async Task <int> InsertAsync(U_AnswerEntity entity) { if (entity.ID <= 0) { entity.ID = GetNewID(); } Dictionary <string, object> dict = new Dictionary <string, object>(); GetParameters(entity, dict); string strSQL = "insert into U_Answer (" + "ID," + "AnswerContent," + "IsBestAnswer," + "ProblemID," + "AnswerTime," + "AUser) " + "values(" + "@ID," + "@AnswerContent," + "@IsBestAnswer," + "@ProblemID," + "@AnswerTime," + "@AUser)"; if (await Task.Run(() => _DB.ExeSQLResult(strSQL, dict))) { return(DataConverter.CLng(entity.ID)); } return(-1); }
/// <summary> /// 增加一条记录 /// </summary> /// <param name="entity">实体模型</param> /// <returns></returns> public virtual bool Add(U_AnswerEntity entity) { if (entity.ID <= 0) { entity.ID = GetNewID(); } Dictionary <string, object> dict = new Dictionary <string, object>(); GetParameters(entity, dict); string strSQL = "insert into U_Answer (" + "ID," + "AnswerContent," + "IsBestAnswer," + "ProblemID," + "AnswerTime," + "AUser) " + "values(" + "@ID," + "@AnswerContent," + "@IsBestAnswer," + "@ProblemID," + "@AnswerTime," + "@AUser)"; return(_DB.ExeSQLResult(strSQL, dict)); }
/// <summary> /// 把实体类转换成键/值对集合 /// </summary> /// <param name="entity"></param> /// <param name="dict"></param> private static void GetParameters(U_AnswerEntity entity, Dictionary <string, object> dict) { dict.Add("ID", entity.ID); dict.Add("AnswerContent", entity.AnswerContent); dict.Add("IsBestAnswer", entity.IsBestAnswer); dict.Add("ProblemID", entity.ProblemID); dict.Add("AnswerTime", entity.AnswerTime); dict.Add("AUser", entity.AUser); }
/// <summary> /// 通过数据读取器生成实体类 /// </summary> /// <param name="rdr"></param> /// <returns></returns> private static U_AnswerEntity GetEntityFromrdr(NullableDataReader rdr) { U_AnswerEntity info = new U_AnswerEntity(); info.ID = rdr.GetInt32("ID"); info.AnswerContent = rdr.GetString("AnswerContent"); info.IsBestAnswer = rdr.GetBoolean("IsBestAnswer"); info.ProblemID = rdr.GetString("ProblemID"); info.AnswerTime = rdr.GetNullableDateTime("AnswerTime"); info.AUser = rdr.GetString("AUser"); return(info); }
/// <summary> /// 获取实体(异步方式) /// </summary> /// <param name="strWhere">参数化查询条件(例如: and Name = @Name )</param> /// <param name="dict">参数的名/值集合</param> /// <returns></returns> public virtual async Task <U_AnswerEntity> GetEntityAsync(string strWhere, Dictionary <string, object> dict = null) { U_AnswerEntity obj = null; string strSQL = "select top 1 * from U_Answer where 1=1 " + strWhere; using (NullableDataReader reader = await Task.Run(() => _DB.GetDataReader(strSQL, dict))) { if (reader.Read()) { obj = GetEntityFromrdr(reader); } } return(obj); }
/// <summary> /// 更新一条记录(异步方式) /// </summary> /// <param name="entity">实体模型</param> /// <returns></returns> public virtual async Task <bool> UpdateAsync(U_AnswerEntity entity) { Dictionary <string, object> dict = new Dictionary <string, object>(); GetParameters(entity, dict); string strSQL = "Update U_Answer SET " + "AnswerContent = @AnswerContent," + "IsBestAnswer = @IsBestAnswer," + "ProblemID = @ProblemID," + "AnswerTime = @AnswerTime," + "AUser = @AUser" + " WHERE " + "ID = @ID"; return(await Task.Run(() => _DB.ExeSQLResult(strSQL, dict))); }
/// <summary> /// 增加或更新一条记录(异步方式) /// </summary> /// <param name="entity">实体模型</param> /// <param name="IsSave">是否增加</param> /// <returns></returns> public virtual async Task <bool> AddOrUpdateAsync(U_AnswerEntity entity, bool IsSave) { return(IsSave ? await AddAsync(entity) : await UpdateAsync(entity)); }
/// <summary> /// 增加或更新一条记录 /// </summary> /// <param name="entity">实体模型</param> /// <param name="IsSave">是否增加</param> /// <returns></returns> public virtual bool AddOrUpdate(U_AnswerEntity entity, bool IsSave) { return(IsSave ? Add(entity) : Update(entity)); }