selectedvalue on dropdown not selecting option inside gridview

why is my selectedvalue on dropdown not selecting option that is already in the database?  
list shows but nothing is selected.  

          <asp:TemplateColumn HeaderText="Whse" ItemStyle-HorizontalAlign="Center">
                                                          <ItemTemplate>
                                                                <asp:Label id="lblWhse" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.whse") %>'>
                                                                </asp:Label>
                                                          </ItemTemplate>
                                                          <EditItemTemplate>
                                                                <asp:DropDownList id="lstWhse" runat="server" Width="63px"   AppendDataBoundItems="true" DataValueField="whse" DataTextField="whse" CssClass="textbox1">
                                                                 
                                                                  </asp:DropDownList>
                                                             
                                                          </EditItemTemplate>
                                                    </asp:TemplateColumn>

Private Sub DataGrid1_EditCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridCommandEventArgs) Handles DataGrid1.EditCommand


        Try

            DataGrid1.Columns(13).Visible = True
            DataGrid1.EditItemIndex = e.Item.ItemIndex

  

            FillGrid()


            Dim itemWhse As New System.Web.UI.WebControls.DropDownList
            itemWhse = DirectCast(DataGrid1.Items(e.Item.ItemIndex).FindControl("lstWhse"), DropDownList)
            ' itemWhse = CType(e.Item.Cells(9).FindControl("lstWhse"), System.Web.UI.WebControls.DropDownList)

            If Session("usertype") = "ASC" Then

                Dim defaultwhse As String = ""
                defaultwhse = c1.getDefaultWhse
                If defaultwhse = "OR" Then
                    itemWhse.Items.Add(New ListItem("SALE", "SALE"))
                    itemWhse.Items.Add(New ListItem(defaultwhse, defaultwhse))
                ElseIf defaultwhse = "SALE" Then
                    itemWhse.Items.Add(New ListItem("OR", "OR"))
                    itemWhse.Items.Add(New ListItem(defaultwhse, defaultwhse))
                Else
                    itemWhse.Items.Add(New ListItem("OR", "OR"))
                    itemWhse.Items.Add(New ListItem("SALE", "SALE"))
                    itemWhse.Items.Add(New ListItem(defaultwhse, defaultwhse))
                End If


            Else

                itemWhse.Items.Add(New ListItem("GA", "GA"))
                itemWhse.Items.Add(New ListItem("MO", "MO"))
                itemWhse.Items.Add(New ListItem("NY", "NY"))
                itemWhse.Items.Add(New ListItem("OR", "OR"))
                itemWhse.Items.Add(New ListItem("SALE", "SALE"))
                itemWhse.Items.Add(New ListItem("123", "123"))



            End If

        Catch ex As Exception
            sbody = "SQL=" & strSQL & " User=" & Session("username") & " Cust=" & Session("cust") & ", Estimate=" & Session("head_num")
            c1.handleError("datagrid1EditCommand", ex.Message, sbody)
        End Try


    End Sub

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