Sp Procedure Call For Databound?

I do not know why it did not return any records. I ran the sp , it return record. if I change the sp to DBComm.CommandType = CommandType.text and put the sp into the text.

It worked ,too. See below my sp.

Public Sub LoadCertification()
'Dim myConn As New SqlConnection
Dim DBComm As New SqlCommand
Dim ds As New DataSet
If myConn.State = ConnectionState.Closed Then
myConn.ConnectionString = ConfigurationManager.ConnectionStrings("NurProfileString").ConnectionString
myConn.Open()
End If
Dim drCertification As SqlDataReader
Try
DBComm.Connection = myConn
DBComm.CommandType = CommandType.StoredProcedure
DBComm.Parameters.Add("@EmpID", SqlDbType.Int).Value = Session("EmplNO")
'tblNurProfileCertification
'
http://www.shotdev.com/aspnet/aspnet-vbnet-gridview/aspnet-vbnet-gridview-databound/
DBComm.CommandText = "NurCerti_Log_Read" '
drCertification = DBComm.ExecuteReader()
dgCertification.DataSource = drCertification
If drCertification.HasRows Then
Response.Write("ABC")
End If
dgCertification.DataBind()
drCertification.Close()
drCertification = Nothing
DBComm.Dispose()
Catch objError As Exception
Dim myarraylist As New ArrayList
myarraylist.Add("fliao@holyredeemer.com")
Exit Try
Finally
End Try
End Sub

Here is my stored procedure
USE [InternalEduTest]
GO
/****** Object: StoredProcedure [dbo].[NurCerti_Log_Read] Script Date: 03/03/2011 13:12:14 ******/
SET ANSI_NULLS OFF
GO
SET QUOTED_IDENTIFIER OFF
GO
CREATE PROCEDURE [dbo].[NurCerti_Log_Read] ( @EmpID nchar(10))
AS
SELECT [EmplID]
,[Certification]
,[CDateObtained]
,[CDateExpiration], ID
FROM [dbo].[NurProfileCertification] where EMPLID = @EmpID