GroupByExpressions and non-datatable objects

[Tim]

Hello,

I have a radgrid that a populate using the ItemDataBound event with my own Object (called 'ConfigurationValueObject'). Mapping its properties and displaying the grid is no problem, however I want to use the GroupByExpressions property to group all data using the property 'Category' in my object. When I add the code:

<GroupByExpressions>
    <telerik:GridGroupByExpression>
        <GroupByFields>
            <telerik:GridGroupByField FieldName="Category" />
        </GroupByFields>
    </telerik:GridGroupByExpression>
</GroupByExpressions>

I receive the following error:

No property or field 'Category' exists in type 'ConfigurationValueObject'

But I know this object does have this (public) property. What I am doing wrong?

[Tim]

Nevermind it was an error on my part.