ASP.net GridView not populating

Hi
I am using the following code to try and populate a GridView in ASP.net but nothing is coming through. I pretty much copied most of it from a VB.net Windows Form application where it retrieved the data fine. Is it perhaps my syntax?

hanks

    Sub DisplayContacts()
        Dim sqlConn As New SqlClient.SqlConnection
        sqlConn.ConnectionString = ConfigurationManager.ConnectionStrings("GHBCRM_TSTConnectionString").ConnectionString

        Try
            sqlConn.Open()
        Catch ex As Exception
            MsgBox(ex.Message, "connection failed")
        End Try

        Dim sqlComm As New SqlClient.SqlCommand
        sqlComm.Connection = sqlConn
        sqlComm.CommandType = CommandType.StoredProcedure

        sqlComm.CommandText = "spViewContacts"
        'sqlComm.CommandText = "spViewInvestorsInInvestments"

        strView = "All Contacts"
        sqlComm.Parameters.AddWithValue("@View", strView)
        sqlComm.Parameters.AddWithValue("@RM", strUserName)
        sqlComm.Parameters.AddWithValue("@Search", "")

        sqlComm.ExecuteNonQuery()

        da.SelectCommand = sqlComm
 

        Try
            If ds.Tables.IndexOf("tblContacts") > -1 Then
                ds.Tables("tblContacts").Clear()
            End If

            da.Fill(ds, "tblContacts")

            GridView1.DataSource = ds
            GridView1.DataMember = "tblContacts"
            'GridView1.Columns("contactid").Visible = False
            'GridView1.Columns(8).Visible = False

            'DisplayContactNotes(-1) 'Clear notes datagridview

            'lblStatus.Text = ds.Tables("tblContacts").Rows.Count.ToString & " Items"

        Catch

        End Try

        sqlConn.Close()

    End Sub