Catch exception thrown by DropDownList set Declaratively

Hi,

I have some DropDownLists that are contained in a DetailsView. Here's
a sample of my code for the DropDownLists :

<InsertItemTemplate>
<aspropDownList ID="ddl_TourOp" runat="server"
DataSourceID="ods_TourOp"
DataTextField="Text" DataValueField="Value"
SelectedValue='<%# Bind("Provider") %>'></
aspropDownList>
</InsertItemTemplate>

Since I set the SelectedValue declaratively using the Bind, is there
anyway I can intercept an exception thrown if the SelectedValue is not
valid?

I found that this is possible for some Controls ( example :
DetailsView OnItemInserted ) by using the EventArgs, but I haven't
found any way to do it this way with the DropDownList.

Anyone has any idea on how I can do this?

Thank you
Simon Picard