How to write WCF for a SQL Server stored procedure that returns a single record

Created all SQL components. Here's the stored procedure:

ALTER PROCEDURE [dbo].[procImpoundRec_Get] @ID intASBEGIN

-- SET NOCOUNT ON added to prevent extra result sets from

-- interfering with SELECT statements. SET NOCOUNT ON; SELECT * FROM

tblImpoundRecs WHERE ID = @IDEND


Here's the Interface in AADM_Service_Interface:

<servicecontract()>
Public Interface AADM_Service_Interface

<operationcontract()>
Function Impound_Get(ByVal ID As Integer) As String

End Interface

Here's the implementation:

Public Class AADM_Service
Implements AADM_Service_Interface

Public Function Impound_GetRecord(ID As Integer) As String Implements AADM_Service_Interface.Impound_Get
Dim objConnect As New SqlConnection(ConnectionStrings.AADM)
Dim myCommand As SqlCommand = New SqlCommand
Dim strReturnRecord As String = ""

With myCommand
.Connection = objConnect
.CommandText = "procImpoundRec_Get"
.CommandType = CommandType.StoredProcedure
.Parameters.Add(New SqlParameter("@ID", ID))
End With

Dim objDataAdapter As New SqlDataAdapter(myCommand)
Dim ds As New DataSet

Try
objDataAdapter.Fill(ds)
strReturnRecord = ds.GetXml
Catch ex As Exception

End Try

Return strReturnRecord

End Function

End Class