Hi,

Am trying to bind hierarchy grid to a costom collection objects with three levels of hierarchy.

The Hierarchygrid behave correctly for 2 levels but when a thrid level is added, it always throws and exception stating that the "Key is already present".

Can you please show a sample code for binding custom collection for three levels.

 <ig:WebHierarchicalDataGrid  ID="_uiPropertyWHDG" runat="server" 
                           Height="400px" Width="95%" InitialDataBindDepth="-1"
                         DataKeyFields="CurrencyId" >
                    </ig:WebHierarchicalDataGrid>

_uiPropertyWHDG.DataSource = GetInvestments( UserId );
_uiPropertyWHDG.DataBind();
_uiPropertyWHDG.ExpandAll();

The data hierarchy levels are
Currency, Company, InvestmentDetails. 
Different investments re purchased in different companies that 
are used in different currencies.

Thanks,

Arif