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Hierarchical UltraGrid with Dynamic DataSource
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Hello,

We are trying to set up a hierarchical ultragrid with a dynamic datasource and the result is extremely slow to move between rows, either using the up/down arrow or the mouse. Basically the ActivateRow event is slow.

We set up the dynamic datasource using a ITypedList and a custom PropertyDescriptor.

The problem seems to be that the grid is constantly asking the "GetValue" of the objects, every activaterow seems to call the getvalue on all the visible cells, even scrolling left/right/up/down causes the getvalue on a lot of properties.

Maybe  we are doing something wrong or something that is not supported.

A very simple example in attachment. Our real example has a lot more properties and has more complex code in the GetValue so the delay is a lot higher, however, this example still shows a noticeable delay.

Any help would be appreciated !

Kind regards,

Michael

PS: We are using version 11.1.20111.2042

DynamicDataSourceTest.zip
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