DetailsView edit page

HI EE,

I have page DetailsView and ObjectDataSource. when I hit "edit" DetailsView, on the Sectors filed,
I want to create new query to display all sector list with CheckBoxList and check on the selected sectors.

And when I update the newly selected sectors should be updated!

pls help, how can I do it!

Thank you

<asp:DetailsView ID="DetailsView1" runat="server" Height="50px" Width="125px" 
        DataSourceID="ObjectDataSource1" EnableModelValidation="True" 
        AutoGenerateRows="False" DataKeyNames="PubContactID">
        <Fields>
            <asp:BoundField DataField="PubContactID" HeaderText="PubContactID" 
                InsertVisible="False" ReadOnly="True" SortExpression="PubContactID" />
            <asp:BoundField DataField="ContactName" HeaderText="ContactName" 
                SortExpression="ContactName" />
            <asp:BoundField DataField="ContactPhone" HeaderText="ContactPhone" 
                SortExpression="ContactPhone" />
            <asp:BoundField DataField="ContactEmail" HeaderText="ContactEmail" 
                SortExpression="ContactEmail" />
            <asp:BoundField DataField="ContactCity" HeaderText="ContactCity" 
                SortExpression="ContactCity" />
            <asp:BoundField DataField="ContactNotes" HeaderText="ContactNotes" 
                SortExpression="ContactNotes" />
            <asp:BoundField DataField="PublicID" HeaderText="PublicID" 
                SortExpression="PublicID" />
            <asp:BoundField DataField="Sectors" HeaderText="Sectors" 
                SortExpression="Sectors" />             
            <asp:CommandField ShowEditButton="True" />
        </Fields>
    </asp:DetailsView>
<asp:ObjectDataSource ID="ObjectDataSource1" runat="server" 
        SelectMethod="GetSubPublicationDetails" TypeName="DataAccess" 
        UpdateMethod="UpdateSubPublicationDetails" 
        onupdated="ObjectDataSource1_Updated">
        <SelectParameters>
            <asp:QueryStringParameter Name="PubID" QueryStringField="id" Type="Int32" 
                DefaultValue="" />
            <asp:QueryStringParameter DefaultValue="eng" Name="lang" 
                QueryStringField="lang" Type="String" />
        </SelectParameters>
        <UpdateParameters>
            <asp:Parameter Name="ContactName" Type="String" />
            <asp:Parameter Name="ContactPhone" Type="String" />
            <asp:Parameter Name="ContactEmail" Type="String" />
            <asp:Parameter Name="ContactCity" Type="String" />
            <asp:Parameter Name="ContactNotes" Type="String" />
            <asp:Parameter Name="Sectors" Type="String" />
            <asp:Parameter Name="PublicID" Type="Int32" />
            <asp:Parameter Name="PubContactID" Type="Int32" />
        </UpdateParameters>
</asp:ObjectDataSource>

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