/// <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(ComPropertyEntity 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.[ComProperty] WITH(NOLOCK) "; string where = "where "; if (entity.Id == 0) { where = where + " (Name=@Name) "; } else { where = where + " id<>@Id and (Name=@Name) "; } sql = sql + where; DbCommand cmd = db.GetSqlStringCommand(sql); if (entity.Id > 0) { db.AddInParameter(cmd, "@Id", DbType.Int32, entity.Id); } db.AddInParameter(cmd, "@Name", DbType.String, entity.Name); object identity = db.ExecuteScalar(cmd); if (identity == null || identity == DBNull.Value) { return(0); } return(Convert.ToInt32(identity)); }
/// <summary> /// 插入一条记录到表ComProperty,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="comProperty">待插入的实体对象</param> public int AddComProperty(ComPropertyEntity entity) { string sql = @"insert into ComProperty( [Id],[Code],[Name])VALUES ( @Id,@Code,@Name)" ; DbCommand cmd = db.GetSqlStringCommand(sql); db.AddInParameter(cmd, "@Code", DbType.String, entity.Code); db.AddInParameter(cmd, "@Name", DbType.String, entity.Name); return(db.ExecuteNonQuery(cmd)); }
/// <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="comProperty">待更新的实体对象</param> public int UpdateComProperty(ComPropertyEntity entity) { string sql = @" UPDATE dbo.[ComProperty] SET [Id]=@Id,[Code]=@Code,[Name]=@Name WHERE [Id]=@id"; DbCommand cmd = db.GetSqlStringCommand(sql); db.AddInParameter(cmd, "@Id", DbType.Int32, entity.Id); db.AddInParameter(cmd, "@Code", DbType.String, entity.Code); db.AddInParameter(cmd, "@Name", DbType.String, entity.Name); return(db.ExecuteNonQuery(cmd)); }
/// <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 <ComPropertyEntity> GetComPropertyAll() { string sql = @"SELECT [Id],[Code],[Name] from dbo.[ComProperty] WITH(NOLOCK) "; IList <ComPropertyEntity> entityList = new List <ComPropertyEntity>(); DbCommand cmd = db.GetSqlStringCommand(sql); using (IDataReader reader = db.ExecuteReader(cmd)) { while (reader.Read()) { ComPropertyEntity entity = new ComPropertyEntity(); entity.Id = StringUtils.GetDbInt(reader["Id"]); entity.Code = StringUtils.GetDbString(reader["Code"]); entity.Name = StringUtils.GetDbString(reader["Name"]); entityList.Add(entity); } } return(entityList); }
/// <summary> /// 插入一条记录到表ComProperty,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="comProperty">要添加的ComProperty数据实体对象</param> public int AddComProperty(ComPropertyEntity comProperty) { if (comProperty.Id > 0) { return(UpdateComProperty(comProperty)); } else if (string.IsNullOrEmpty(comProperty.Name)) { return((int)CommonStatus.ADD_Fail_Empty); } else if (ComPropertyBLL.Instance.IsExist(comProperty)) { return((int)CommonStatus.ADD_Fail_Exist); } else { return(ComPropertyDA.Instance.AddComProperty(comProperty)); } }
/// <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 <ComPropertyEntity> GetComPropertyList(int pagesize, int pageindex, ref int recordCount) { string sql = @"SELECT [Id],[Code],[Name] FROM (SELECT ROW_NUMBER() OVER (ORDER BY Id desc) AS ROWNUMBER, [Id],[Code],[Name] from dbo.[ComProperty] WITH(NOLOCK) WHERE 1=1 ) as temp where rownumber BETWEEN ((@PageIndex - 1) * @PageSize + 1) AND @PageIndex * @PageSize" ; string sql2 = @"Select count(1) from dbo.[ComProperty] with (nolock) "; IList <ComPropertyEntity> entityList = new List <ComPropertyEntity>(); 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()) { ComPropertyEntity entity = new ComPropertyEntity(); entity.Id = StringUtils.GetDbInt(reader["Id"]); entity.Code = StringUtils.GetDbString(reader["Code"]); entity.Name = StringUtils.GetDbString(reader["Name"]); 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 ComPropertyEntity GetComProperty(int id) { string sql = @"SELECT [Id],[Code],[Name] FROM dbo.[ComProperty] WITH(NOLOCK) WHERE [Id]=@id" ; DbCommand cmd = db.GetSqlStringCommand(sql); db.AddInParameter(cmd, "@Id", DbType.Int32, id); ComPropertyEntity entity = new ComPropertyEntity(); using (IDataReader reader = db.ExecuteReader(cmd)) { if (reader.Read()) { entity.Id = StringUtils.GetDbInt(reader["Id"]); entity.Code = StringUtils.GetDbString(reader["Code"]); entity.Name = StringUtils.GetDbString(reader["Name"]); } } return(entity); }
/// <summary> /// 更新一条ComProperty记录。 /// 该方法提供给界面等UI层调用 /// </summary> /// <param name="comProperty">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 UpdateComProperty(ComPropertyEntity comProperty) { return(ComPropertyDA.Instance.UpdateComProperty(comProperty)); }
/// <summary> /// 判断对象是否存在 /// </summary> /// <param name="dicEnum"></param> /// <returns></returns> public bool IsExist(ComPropertyEntity comProperty) { return(ComPropertyDA.Instance.ExistNum(comProperty) > 0); }