Telerik RadGrid - How do I default to edit mode?

Question

I want to make the items of my RadGrid be editable on page load. I've tried both methods here http://www.telerik.com/help/aspnet/grid/grddefaulteditmodeforgriditemsoninitialload.html but neither have any effect.

The 2nd method for example, shown below where the Edit property is set on the ItemCreated event, causes the Edit mode to be set true (verified by debugger) but it has no effect on the results when the page is displayed.

Anyone have any ideas what I'm doing wrong?

protected void RadGrid1_ItemCreated(object sender, Telerik.WebControls.GridItemEventArgs e)
{
    if (!Page.IsPostBack && e.Item is GridEditableItem)
   {
       e.Item.Edit = true;
   }
}

Answer 1

This works:

for (int i = 0; i < RadGrid1.PageSize; i++)
{
    RadGrid1.EditIndexes.Add(i);
    RadGrid1.Rebind();
}