Expand causing server post back

[Andy Macourek]

I created a new page with code from a grid from another page.  For some reason, when I expand the rows, the page performs a post back to the server.  I have the HierarchyLoadMode for the MasterTableView set to "Client".  This works on the other page just fine.  Any ideas?

<rad:RadGrid ID="GridSummary" runat="server" OnColumnCreated="Grid_ColumnCreated"
    OnItemCreated="Grid_ItemCreated" OnItemDataBound="Grid_ItemDataBound"
    EnableEmbeddedSkins="false" Skin="MetroMagenta" Width="900px" AutoGenerateColumns="false">
    <MasterTableView HierarchyDefaultExpanded="true" HierarchyLoadMode="Client"
        OnDataBound="Grid_DataBound"
        DataKeyNames="RecordId, ParentRecordId, RecordName">
        <SelfHierarchySettings ParentKeyName="ParentRecordId" KeyName="RecordId" />
        <Columns>
            <rad:GridBoundColumn DataField="RecordName" UniqueName="RecordName" HeaderText="" />
            <rad:GridBoundColumn DataField="SocialVolume" UniqueName="SocialVolume" HeaderText="Social Volume"  HeaderStyle-Width="150px" ItemStyle-Width="150px" />
            <rad:GridBoundColumn DataField="CaseVolume" UniqueName="CaseVolume" HeaderText="Case Volume"  HeaderStyle-Width="150px" ItemStyle-Width="150px" />
            <rad:GridBoundColumn DataField="HelpVolume" UniqueName="HelpVolume" HeaderText="Help Volume"  HeaderStyle-Width="150px" ItemStyle-Width="150px" />
        </Columns>
    </MasterTableView>
    <ClientSettings AllowExpandCollapse="true" />
</rad:RadGrid>

[Angel Petrov]

Hi Andy,

When using self-hierarchical grid advanced data binding using NeedDataSource is the recommended approach. Self-hierarchical structure is not supported if simple data binding is used. Could you confirm that you are not using simple data binding? Also another reason for a postback may be if you have a javascript error in the page. Could you confirm that you don`t have a javascript error?

All the best,
Angel Petrov
the Telerik team