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cmd.Parameters.Add("Count", SqlDbType.Int);
cmd.Parameters["Count"].Value = maximumRows;
cmd.Parameters.Add("GenreID", SqlDbType.Int);
cmd.Parameters["GenreID"].Value = GenreID;
DataSet ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = cmd;
try
{
conn.Open();
da.Fill(ds);
}
catch (SqlException)
{
conn.Close();
return null;
}
finally
{
conn.Close();
}
return ds;
}
Хранимая процедура GetPageProductsByGenre:
CREATE PROCEDURE GetPageProductsByGenre (@Start INT, @Count INT,
@GenreID INT)
AS
CREATE TABLE #TempProductsList
(
Num INT IDENTITY (0,1) PRIMARY KEY,
ProductID INT,
ArtistName NVARCHAR(50),
98
ArtistID INT,
AlbumName NVARCHAR(50),
UnitCost MONEY,
Presence BIT
)
INSERT INTO #TempProductsList
(ProductID, ArtistName, ArtistID, AlbumName, UnitCost, Presence)
SELECT ProductID, ArtistName, Catalogue.ArtistID, AlbumName, UnitCost, Presence
FROM Catalogue, Artists
WHERE GenreID = @GenreID AND Catalogue.ArtistID = Artists.ArtistID
ORDER BY ArtistName
DECLARE @FromNum INT
DECLARE @ToNum INT
SET @FromNum = @Start
SET @ToNum = @Start + @Count – 1
SELECT ProductID, ArtistName, ArtistID, AlbumName, UnitCost, Presence FROM
#TempProductsList
WHERE Num >= @FromNum AND Num <= @ToNum
GO
