/// <summary> /// 根据主键值读取记录。如果数据库不存在这条数据将返回null /// </summary> /// <param name="db">数据库操作对象</param> /// <param name="columns">需要返回的列,不提供任何列名时默认将返回所有列</param> public CommentShowEntity GetCommentShow(int id) { string sql=@"SELECT [Id],[Title],[CommentTime],[Star],[ColorSize],[CommentContent],[MemberCode],[MemberLevel],[ClientType] FROM dbo.[CommentShow] WITH(NOLOCK) WHERE [Id]=@id"; DbCommand cmd = db.GetSqlStringCommand(sql); db.AddInParameter(cmd,"@Id", DbType.Int32,id); CommentShowEntity entity=new CommentShowEntity(); using (IDataReader reader = db.ExecuteReader(cmd)) { if (reader.Read()) { entity.Id=StringUtils.GetDbInt(reader["Id"]); entity.Title=StringUtils.GetDbString(reader["Title"]); entity.CommentTime=StringUtils.GetDbDateTime(reader["CommentTime"]); entity.Star=StringUtils.GetDbInt(reader["Star"]); entity.ColorSize=StringUtils.GetDbString(reader["ColorSize"]); entity.CommentContent=StringUtils.GetDbString(reader["CommentContent"]); entity.MemberCode=StringUtils.GetDbString(reader["MemberCode"]); entity.MemberLevel=StringUtils.GetDbInt(reader["MemberLevel"]); entity.ClientType=StringUtils.GetDbInt(reader["ClientType"]); } } return entity; }
/// <summary> /// 插入一条记录到表CommentShow,如果表中存在自增字段,则返回值为新记录的自增字段值,否则返回0。 /// 该方法提供给界面等UI层调用 /// </summary> /// <param name="commentShow">要添加的CommentShow数据实体对象</param> public int AddCommentShow(CommentShowEntity commentShow) { if (commentShow.Id > 0) { return(UpdateCommentShow(commentShow)); } else if (CommentShowBLL.Instance.IsExist(commentShow)) { return((int)CommonStatus.ADD_Fail_Exist); } else { return(CommentShowDA.Instance.AddCommentShow(commentShow)); } }
/// <summary> /// 读取记录列表。 /// </summary> /// <param name="db">数据库操作对象</param> /// <param name="columns">需要返回的列,不提供任何列名时默认将返回所有列</param> public IList<CommentShowEntity> GetCommentShowList(int pagesize, int pageindex, ref int recordCount ) { string sql=@"SELECT [Id],[Title],[CommentTime],[Star],[ColorSize],[CommentContent],[MemberCode],[MemberLevel],[ClientType] FROM (SELECT ROW_NUMBER() OVER (ORDER BY Id desc) AS ROWNUMBER, [Id],[Title],[CommentTime],[Star],[ColorSize],[CommentContent],[MemberCode],[MemberLevel],[ClientType] from dbo.[CommentShow] WITH(NOLOCK) WHERE 1=1 ) as temp where rownumber BETWEEN ((@PageIndex - 1) * @PageSize + 1) AND @PageIndex * @PageSize"; string sql2=@"Select count(1) from dbo.[CommentShow] with (nolock) "; IList<CommentShowEntity> entityList = new List< CommentShowEntity>(); DbCommand cmd = db.GetSqlStringCommand(sql); db.AddInParameter(cmd, "@PageIndex", DbType.Int32, pageindex); db.AddInParameter(cmd, "@PageSize", DbType.Int32, pagesize); using (IDataReader reader = db.ExecuteReader(cmd)) { while (reader.Read()) { CommentShowEntity entity=new CommentShowEntity(); entity.Id=StringUtils.GetDbInt(reader["Id"]); entity.Title=StringUtils.GetDbString(reader["Title"]); entity.CommentTime=StringUtils.GetDbDateTime(reader["CommentTime"]); entity.Star=StringUtils.GetDbInt(reader["Star"]); entity.ColorSize=StringUtils.GetDbString(reader["ColorSize"]); entity.CommentContent=StringUtils.GetDbString(reader["CommentContent"]); entity.MemberCode=StringUtils.GetDbString(reader["MemberCode"]); entity.MemberLevel=StringUtils.GetDbInt(reader["MemberLevel"]); entity.ClientType=StringUtils.GetDbInt(reader["ClientType"]); entityList.Add(entity); } } cmd = db.GetSqlStringCommand(sql2); using (IDataReader reader = db.ExecuteReader(cmd)) { if (reader.Read()) { recordCount = StringUtils.GetDbInt(reader[0]); } else { recordCount = 0; } } return entityList; }
/// <summary> /// 根据主键值更新记录的全部字段(注意:该方法不会对自增字段、timestamp类型字段以及主键字段更新!如果要更新主键字段,请使用Update方法)。 /// 如果数据库有数据被更新了则返回True,否则返回False /// </summary> /// <param name="db">数据库操作对象</param> /// <param name="commentShow">待更新的实体对象</param> public int UpdateCommentShow(CommentShowEntity entity) { string sql=@" UPDATE dbo.[CommentShow] SET [Title]=@Title,[CommentTime]=@CommentTime,[Star]=@Star,[ColorSize]=@ColorSize,[CommentContent]=@CommentContent,[MemberCode]=@MemberCode,[MemberLevel]=@MemberLevel,[ClientType]=@ClientType WHERE [Id]=@id"; DbCommand cmd = db.GetSqlStringCommand(sql); db.AddInParameter(cmd,"@Id", DbType.Int32,entity.Id); db.AddInParameter(cmd,"@Title", DbType.String,entity.Title); db.AddInParameter(cmd,"@CommentTime", DbType.DateTime,entity.CommentTime); db.AddInParameter(cmd,"@Star", DbType.Int32,entity.Star); db.AddInParameter(cmd,"@ColorSize", DbType.String,entity.ColorSize); db.AddInParameter(cmd,"@CommentContent", DbType.String,entity.CommentContent); db.AddInParameter(cmd,"@MemberCode", DbType.String,entity.MemberCode); db.AddInParameter(cmd,"@MemberLevel", DbType.Int32,entity.MemberLevel); db.AddInParameter(cmd,"@ClientType", DbType.Int32,entity.ClientType); return db.ExecuteNonQuery(cmd); }
/// <summary> /// 插入一条记录到表CommentShow,如果表中存在自增字段,则返回值为新记录的自增字段值,否则返回0 /// </summary> /// <param name="db">数据库操作对象</param> /// <param name="commentShow">待插入的实体对象</param> public int AddCommentShow(CommentShowEntity entity) { string sql=@"insert into CommentShow( [Title],[CommentTime],[Star],[ColorSize],[CommentContent],[MemberCode],[MemberLevel],[ClientType])VALUES ( @Title,@CommentTime,@Star,@ColorSize,@CommentContent,@MemberCode,@MemberLevel,@ClientType); SELECT SCOPE_IDENTITY();"; DbCommand cmd = db.GetSqlStringCommand(sql); db.AddInParameter(cmd,"@Title", DbType.String,entity.Title); db.AddInParameter(cmd,"@CommentTime", DbType.DateTime,entity.CommentTime); db.AddInParameter(cmd,"@Star", DbType.Int32,entity.Star); db.AddInParameter(cmd,"@ColorSize", DbType.String,entity.ColorSize); db.AddInParameter(cmd,"@CommentContent", DbType.String,entity.CommentContent); db.AddInParameter(cmd,"@MemberCode", DbType.String,entity.MemberCode); db.AddInParameter(cmd,"@MemberLevel", DbType.Int32,entity.MemberLevel); db.AddInParameter(cmd,"@ClientType", DbType.Int32,entity.ClientType); object identity = db.ExecuteScalar(cmd); if (identity == null || identity == DBNull.Value) return 0; return Convert.ToInt32(identity); }
/// <summary> /// 判断当前节点是否已存在相同的 /// </summary> /// <param name="entity"></param> /// <returns></returns> public int ExistNum(CommentShowEntity entity) { ///id=0,判断总数,ID>0判断除自己之外的总数 string sql = @"Select count(1) from dbo.[CommentShow] WITH(NOLOCK) "; string where = "where "; if (entity.Id == 0) { } else { } sql = sql + where; DbCommand cmd = db.GetSqlStringCommand(sql); if (entity.Id > 0) { db.AddInParameter(cmd, "@Id", DbType.Int32, entity.Id); } object identity = db.ExecuteScalar(cmd); if (identity == null || identity == DBNull.Value) return 0; return Convert.ToInt32(identity); }
/// <summary> /// 读取记录列表。 /// </summary> /// <param name="db">数据库操作对象</param> /// <param name="columns">需要返回的列,不提供任何列名时默认将返回所有列</param> public IList<CommentShowEntity> GetCommentShowAll() { string sql = @"SELECT [Id],[Title],[CommentTime],[Star],[ColorSize],[CommentContent],[MemberCode],[MemberLevel],[ClientType] from dbo.[CommentShow] WITH(NOLOCK) "; IList<CommentShowEntity> entityList = new List<CommentShowEntity>(); DbCommand cmd = db.GetSqlStringCommand(sql); using (IDataReader reader = db.ExecuteReader(cmd)) { while (reader.Read()) { CommentShowEntity entity=new CommentShowEntity(); entity.Id=StringUtils.GetDbInt(reader["Id"]); entity.Title=StringUtils.GetDbString(reader["Title"]); entity.CommentTime=StringUtils.GetDbDateTime(reader["CommentTime"]); entity.Star=StringUtils.GetDbInt(reader["Star"]); entity.ColorSize=StringUtils.GetDbString(reader["ColorSize"]); entity.CommentContent=StringUtils.GetDbString(reader["CommentContent"]); entity.MemberCode=StringUtils.GetDbString(reader["MemberCode"]); entity.MemberLevel=StringUtils.GetDbInt(reader["MemberLevel"]); entity.ClientType=StringUtils.GetDbInt(reader["ClientType"]); entityList.Add(entity); } } return entityList; }
/// <summary> /// 更新一条CommentShow记录。 /// 该方法提供给界面等UI层调用 /// </summary> /// <param name="commentShow">待更新的实体对象</param> /// <param name="columns">要更新的列名,不提供任何列名时默认将更新主键之外的所有列</param> public int UpdateCommentShow(CommentShowEntity commentShow) { return(CommentShowDA.Instance.UpdateCommentShow(commentShow)); }
/// <summary> /// 判断对象是否存在 /// </summary> /// <param name="dicEnum"></param> /// <returns></returns> public bool IsExist(CommentShowEntity commentShow) { return(CommentShowDA.Instance.ExistNum(commentShow) > 0); }