Intellisense not working with custom control

[JontyMC]

I've overriden the GridView to create my own custom control. Works fine, drag from the toolbox and everythings great. However:

<wcl:myGridView ID="ListEdit1" runat="server" DataSourceID="SqlDataSource1" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False" PageSize="5" SelectedRowStyle-BackColor="aqua">
  <Columns>
    <asp:BoundField DataField="Title" HeaderText="Title" SortExpression="Title" />
    <asp:BoundField DataField="UpdateDTG" HeaderText="Update Date" SortExpression="UpdateDTG" />
  </Columns>
</wcl:myGridView>

Intellisense doesn't work between the <Columns> tags. Any idea what could've caused this or how I get it back.

Jon

"I don't regret this, but I both rue and lament it.