Asp.net - Return Two Tables From A Stored Procedure From LINQ To SQL?

I have written a stored procedure like this:

CREATE PROCEDURE [dbo].[TestProcedure]
AS
BEGIN
SELECT TOP 1 CampaignID FROM Campaigns
SELECT TOP 1 ServiceID FROM Services ORDER BY ServiceID desc
END

In my .NET Project, I have a LINQ to SQL file (.dbml) and I have drag-and-dropped this procedure to create a new class TestProcedureResult:

Partial Public Class TestProcedureResult
Private _CampaignID As Integer
Public Sub New()

[Code]....

So it is not returning ServiceID. How can I retreive ServiceID using LINQ to SQL? I know we can customize stored procedure calls, but how can I customize in this particular scenario?