clear all listview rows before expand row

[norphos]

Hi,

is there a way i can clear all listview displayed rows before a row is expanded in a gridpanel?

<DirectEvents>

<BeforeExpand OnEvent="BeforeExpand">

<EventMask ShowMask="true" />

<ExtraParams>
<ext:Parameter Name="id" Value="record.id" Mode="Raw" />
</ExtraParams>

</BeforeExpand>

</DirectEvents>