hi,
I added Count function to my gridview and it was OK,
but when I upgraded the controls version the summary disappear,
here is my code:
<telerik:RadGridView >
<telerik:RadGridView.Columns>
<telerik:GridViewDataColumn IsVisible="False" Header="ID" DataMemberBinding="{Binding VD_ID}"/>
<telerik:GridViewDataColumn IsFilterable="False" Header="id" DataMemberBinding="{Binding VD_IdNum}">
<telerik:GridViewDataColumn.AggregateFunctions>
<data:CountFunction Caption="{x:Static Resx:Strings.LocatesRecords}" />
</telerik:GridViewDataColumn.AggregateFunctions>
</telerik:GridViewDataColumn>
</telerik:RadGridView.Columns>
</telerik:RadGridView>