/// <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(ProductStyleCarEntity 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.[ProductStyleCar] 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> /// 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 ProductStyleCarEntity GetProductStyleCar(int id) { string sql = @"SELECT [Id],[StyleId],[BrandCar1],[BrandCar2],[BrandCar3],[BrandCar4],[CreateTime] FROM dbo.[ProductStyleCar] WITH(NOLOCK) WHERE [Id]=@id" ; DbCommand cmd = db.GetSqlStringCommand(sql); db.AddInParameter(cmd, "@Id", DbType.Int32, id); ProductStyleCarEntity entity = new ProductStyleCarEntity(); using (IDataReader reader = db.ExecuteReader(cmd)) { if (reader.Read()) { entity.Id = StringUtils.GetDbInt(reader["Id"]); entity.StyleId = StringUtils.GetDbInt(reader["StyleId"]); entity.BrandCar1 = StringUtils.GetDbInt(reader["BrandCar1"]); entity.BrandCar2 = StringUtils.GetDbInt(reader["BrandCar2"]); entity.BrandCar3 = StringUtils.GetDbInt(reader["BrandCar3"]); entity.BrandCar4 = StringUtils.GetDbInt(reader["BrandCar4"]); entity.CreateTime = StringUtils.GetDbDateTime(reader["CreateTime"]); } } return(entity); }
/// <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="productStyleCar">待更新的实体对象</param> public int UpdateProductStyleCar(ProductStyleCarEntity entity) { string sql = @" UPDATE dbo.[ProductStyleCar] SET [StyleId]=@StyleId,[BrandCar1]=@BrandCar1,[BrandCar2]=@BrandCar2,[BrandCar3]=@BrandCar3,[BrandCar4]=@BrandCar4,[CreateTime]=@CreateTime WHERE [Id]=@id"; DbCommand cmd = db.GetSqlStringCommand(sql); db.AddInParameter(cmd, "@Id", DbType.Int32, entity.Id); db.AddInParameter(cmd, "@StyleId", DbType.Int32, entity.StyleId); db.AddInParameter(cmd, "@BrandCar1", DbType.Int32, entity.BrandCar1); db.AddInParameter(cmd, "@BrandCar2", DbType.Int32, entity.BrandCar2); db.AddInParameter(cmd, "@BrandCar3", DbType.Int32, entity.BrandCar3); db.AddInParameter(cmd, "@BrandCar4", DbType.Int32, entity.BrandCar4); db.AddInParameter(cmd, "@CreateTime", DbType.DateTime, entity.CreateTime); 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 <ProductStyleCarEntity> GetProductStyleCarList(int pagesize, int pageindex, ref int recordCount) { string sql = @"SELECT [Id],[StyleId],[BrandCar1],[BrandCar2],[BrandCar3],[BrandCar4],[CreateTime] FROM (SELECT ROW_NUMBER() OVER (ORDER BY Id desc) AS ROWNUMBER, [Id],[StyleId],[BrandCar1],[BrandCar2],[BrandCar3],[BrandCar4],[CreateTime] from dbo.[ProductStyleCar] WITH(NOLOCK) WHERE 1=1 ) as temp where rownumber BETWEEN ((@PageIndex - 1) * @PageSize + 1) AND @PageIndex * @PageSize" ; string sql2 = @"Select count(1) from dbo.[ProductStyleCar] with (nolock) "; IList <ProductStyleCarEntity> entityList = new List <ProductStyleCarEntity>(); 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()) { ProductStyleCarEntity entity = new ProductStyleCarEntity(); entity.Id = StringUtils.GetDbInt(reader["Id"]); entity.StyleId = StringUtils.GetDbInt(reader["StyleId"]); entity.BrandCar1 = StringUtils.GetDbInt(reader["BrandCar1"]); entity.BrandCar2 = StringUtils.GetDbInt(reader["BrandCar2"]); entity.BrandCar3 = StringUtils.GetDbInt(reader["BrandCar3"]); entity.BrandCar4 = StringUtils.GetDbInt(reader["BrandCar4"]); entity.CreateTime = StringUtils.GetDbDateTime(reader["CreateTime"]); 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> /// 插入一条记录到表ProductStyleCar,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="productStyleCar">待插入的实体对象</param> public int AddProductStyleCar(ProductStyleCarEntity entity) { string sql = @"insert into ProductStyleCar( [StyleId],[BrandCar1],[BrandCar2],[BrandCar3],[BrandCar4],[CreateTime])VALUES ( @StyleId,@BrandCar1,@BrandCar2,@BrandCar3,@BrandCar4,@CreateTime); SELECT SCOPE_IDENTITY();" ; DbCommand cmd = db.GetSqlStringCommand(sql); db.AddInParameter(cmd, "@StyleId", DbType.Int32, entity.StyleId); db.AddInParameter(cmd, "@BrandCar1", DbType.Int32, entity.BrandCar1); db.AddInParameter(cmd, "@BrandCar2", DbType.Int32, entity.BrandCar2); db.AddInParameter(cmd, "@BrandCar3", DbType.Int32, entity.BrandCar3); db.AddInParameter(cmd, "@BrandCar4", DbType.Int32, entity.BrandCar4); db.AddInParameter(cmd, "@CreateTime", DbType.DateTime, entity.CreateTime); 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 <ProductStyleCarEntity> GetProductStyleCarAll() { string sql = @"SELECT [Id],[StyleId],[BrandCar1],[BrandCar2],[BrandCar3],[BrandCar4],[CreateTime] from dbo.[ProductStyleCar] WITH(NOLOCK) "; IList <ProductStyleCarEntity> entityList = new List <ProductStyleCarEntity>(); DbCommand cmd = db.GetSqlStringCommand(sql); using (IDataReader reader = db.ExecuteReader(cmd)) { while (reader.Read()) { ProductStyleCarEntity entity = new ProductStyleCarEntity(); entity.Id = StringUtils.GetDbInt(reader["Id"]); entity.StyleId = StringUtils.GetDbInt(reader["StyleId"]); entity.BrandCar1 = StringUtils.GetDbInt(reader["BrandCar1"]); entity.BrandCar2 = StringUtils.GetDbInt(reader["BrandCar2"]); entity.BrandCar3 = StringUtils.GetDbInt(reader["BrandCar3"]); entity.BrandCar4 = StringUtils.GetDbInt(reader["BrandCar4"]); entity.CreateTime = StringUtils.GetDbDateTime(reader["CreateTime"]); entityList.Add(entity); } } return(entityList); }