จะทำการ bind data in gridview โดยใช้ 2 dataset จะต้องทำยังไงครับ

Protected Sub PopUpDatabind(ByVal sender As Object, ByVal e As EventArgs)
        If GridView1.Rows.Count > 0 Then
            Dim row As GridViewRow = CType(CType(sender, LinkButton).Parent.Parent, GridViewRow)
            Dim ds As New DataSet
            Dim dsPopUp As New DataSet

            ds = GetDataIss(txtwkfrom.Text.ToUpper.Trim, txtwkto.Text.ToUpper.Trim, txtItemfrom.Text.ToUpper.Trim, txtItemto.Text.ToUpper.Trim, dpkfrom.Text, dpkto.Text, ddltypedate.SelectedValue, ddlstatus.SelectedValue, "", dpkreqdate.Text)

            If GridView1.Rows.Count > 0 Then
                pl_wk = ds.Tables(0).Rows.Item(0).Item("pl_wk")
                pl_date2 = ds.Tables(0).Rows.Item(0).Item("pl_date2")
                If pl_date2 <> "" Then
                    pl_date2 = CDate(pl_date2).ToString("yyyyMMdd")
                End If
                pl_type_date = ds.Tables(0).Rows.Item(0).Item("pl_type_date")
                If pl_type_date = "Release Date" Then
                    pl_type_date = "R"
                ElseIf pl_type_date = "Plan Date" Then
                    pl_type_date = "P"
                End If
                pl_doc_no = ds.Tables(0).Rows.Item(0).Item("pl_doc_no")
                pld_material = ds.Tables(0).Rows.Item(0).Item("Pld_material_pop")

                GetMFGLot(pld_material, "", "", "")
                dsPopUp = GetDataIssPopup(pl_wk, pl_date2, pl_type_date, pl_doc_no)

            End If

            mp1.Show()
            GridView2.DataSource = GetMFGLot(pld_material, "", "", "")
            GridView2.DataSource = dsPopUp
            GridView2.DataBind()

            'mp1.Show()
            'GridView2.DataSource = dsPopUp
            'GridView2.DataBind()

        End If

    End Sub

<asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="False" BackColor="#DEBA84" 
                            BorderColor="#DEBA84" BorderStyle="None" BorderWidth="1px" CellPadding="3" 
                            CellSpacing="2" Height="90px" Width="900px" Font-Size="Medium">
            <RowStyle BackColor="#FFF7E7" ForeColor="#8C4510" />
            <Columns>
                <asp:TemplateField HeaderText="Material">
                    <ItemTemplate>
                        <asp:Label ID="lblpld_material" runat="server" Text='<%# Eval("pld_material") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Description">
                    <ItemTemplate>
                        <asp:Label ID="lblpt_desc1" runat="server" 
                            Text='<%# Eval("pt_desc1") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Req Qty">
                    <ItemTemplate>
                        <asp:Label ID="lblpld_req_qty" runat="server" 
                            Text='<%# Eval("pld_req_qty") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Req UM">
                    <ItemTemplate>
                        <asp:Label ID="lblpld_req_um" runat="server" 
                            Text='<%# Eval("pld_req_um") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Iss Qty">
                    <ItemTemplate>
                        <asp:Label ID="lblpl_request_by" runat="server" 
                            Text='<%# Eval("pl_request_by") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Iss UM">
                    <ItemTemplate>
                        <asp:Label ID="lblpl_request_date" runat="server" 
                            Text='<%# Eval("pl_request_date") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Lot/Serial">
                    <ItemTemplate>-
                        <asp:Label ID="lblSERIAL" runat="server" Text='<%# Eval("SERIAL") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
            <FooterStyle BackColor="#F7DFB5" ForeColor="#8C4510" />
            <PagerStyle ForeColor="#8C4510" HorizontalAlign="Center" />
            <SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="White" />
            <HeaderStyle BackColor="#A55129" Font-Bold="True" ForeColor="White" />
        </asp:GridView>

Public Shared Function GetDataIssPopup(ByVal wk As String, _
                                  ByVal datef As String, _
                                  ByVal datetype As String, _
                                  ByVal doc As String) As DataSet
        Try
            strSql = New StringBuilder
            strSql.AppendLine("select (l.user_name || ' ' || l.user_surname) pl_request_by,")
            strSql.AppendLine("       to_char(h.pl_request_date,'dd/MM/yyyy') as pl_request_date,")
            strSql.AppendLine("       d.pld_material,d.pld_req_qty,d.pld_req_um,")
            strSql.AppendLine("       pt.pt_desc1,")
            strSql.AppendLine("       ' ' lot  ")
            strSql.AppendLine("from fpcl_picklist_header h inner join fpcl_picklist_detail d on h.pl_wk=d.pld_wk")
            strSql.AppendLine("                                      and h.pl_date=d.pld_date")
            strSql.AppendLine("                                      and h.pl_doc_no=d.pld_doc_no")
            strSql.AppendLine("                            inner join nap_user_login l on h.pl_request_by=l.login_id")
            strSql.AppendLine("                            inner join PT_MSTR@pcttprod pt on upper(pt.pt_part)=d.pld_material")
            strSql.AppendLine("                                      and upper(pt.pt_domain)='2000'")
            strSql.AppendLine("where 1=1")
            strSql.AppendLine("    and h.pl_wk='" & wk & "'")
            strSql.AppendLine("    and to_char(h.pl_date,'yyyyMMdd')='" & datef & "'")
            strSql.AppendLine("    and h.pl_type_date='" & datetype & "'")
            strSql.AppendLine("    and h.pl_doc_no='" & doc & "'")
            strSql.AppendLine("order by d.pld_material")

            Dim StrQuery As String = ""
            StrQuery = strSql.ToString

            Return GetDataOracle(strSql.ToString, "GetDataIss", constrFPCOlacle)
        Catch ex As Exception
            Throw ex
        End Try
    End Function

 Public Shared Function GetMFGLot(ByVal part As String, ByVal floc As String, ByVal tloc As String, ByVal domain As String) As string

        Dim ds As New DataSet
        Dim Getlot As New DataSet

        Try

            strSql = New StringBuilder
            strSql.AppendLine(" SELECT LD_DET.LD_REF,LD_DET.LD_LOC,LD_DET.LD_LOT,LD_DET.LD_QTY_OH,")
            strSql.AppendLine(" (CASE WHEN (to_char(LD_DET.LD_DATE,'yyyyMMdd') >= '20130415') then (CASE WHEN (LD_DET.LD_REF IS NULL OR LD_DET.LD_REF =' ') then LD_DET.LD_LOT else LD_DET.LD_REF end) else LD_DET.LD_LOT end) SERIAL")
            strSql.AppendLine(" FROM QAD.LD_DET")
            strSql.AppendLine(" WHERE LD_DET.LD_QTY_OH > 0 ")
            strSql.AppendLine("       AND UPPER(LD_DET.LD_PART) = '" & part.ToUpper & "'")
            'strSql.AppendLine("       AND LD_DET.LD_LOC >= '" & floc & "'")
            'strSql.AppendLine("       AND LD_DET.LD_LOC <= '" & tloc & "'")
            strSql.AppendLine("       AND LD_DET.LD_LOC >= '21' ")
            strSql.AppendLine("       AND LD_DET.LD_LOC <= '28z' ")
            strSql.AppendLine("       AND UPPER(LD_DET.Ld_Domain) = '2000'")
            strSql.AppendLine("       AND UPPER(LD_DET.LD_STATUS) in ('GOOD')")
            strSql.AppendLine("       AND length(LD_DET.LD_LOC) = 8")
            strSql.AppendLine(" ORDER BY ")
            strSql.AppendLine("        (CASE WHEN (to_char(LD_DET.LD_DATE,'yyyyMMdd') >= '20130415') then (CASE WHEN (LD_DET.LD_REF IS NULL OR LD_DET.LD_REF =' ') then LD_DET.LD_LOT else LD_DET.LD_REF end) else LD_DET.LD_LOT end)")

            Dim StrQuery As String = ""
            StrQuery = strSql.ToString

            Dim lot As String = ""
            Dim dstlot As New DataSet

            dstlot = (GetDataOracle(strSql.ToString, "GetMFGLot", constrForcastOlacle))

            If dstlot.Tables(0).Rows.Count > 0 Then
                Dim serial As String = ""
                For Each dr As DataRow In dstlot.Tables(0).Rows
                    serial = ""
                    If IsDBNull(dr.Item("SERIAL")) = False Then
                        serial = dr.Item("SERIAL")
                    End If
                    If lot = "" Then
                        lot = serial & " / " & IIf(IsDBNull(dr.Item("LD_LOC")) = False, dr.Item("LD_LOC"), "") & "  (" & Format(CDec(IIf(IsDBNull(dr.Item("LD_QTY_OH")) = False, dr.Item("LD_QTY_OH"), 0)), "#,##0.00") & ")"
                    Else
                        lot = lot & ", " & serial & " / " & IIf(IsDBNull(dr.Item("LD_LOC")) = False, dr.Item("LD_LOC"), "") & "  (" & Format(CDec(IIf(IsDBNull(dr.Item("LD_QTY_OH")) = False, dr.Item("LD_QTY_OH"), 0)), "#,##0.00") & ")"
                    End If
                Next
            End If

            Return lot

        Catch ex As Exception
            Throw ex
        End Try
    End Function