Hi,
From your encypted question what i understand is, you want to show your data depending on the value in the dropdownlist. If it is correct then below code may work for you,
You can create one StoredProcedure that can accept inputs as the value of your dropdownlist.
CREATE PROCEDURE selectDataByDDLValue(@ddlValue INTEGER)
AS
IF @ddlValue == 1
BEGIN
END
ELSE
BEGIN
IF @ddlValue == 2
BEGIN
END
ELSE
BEGIN
END
END
GO
Hope you got the idea.