Gridview with buttonfield delete & Linq to SQL DAL

Question

I'm trying implement a simple Button field in the GridView.

<asp:ButtonField ButtonType="Button" CommandName="Delete" Text="Delete" />

I have a three-tier application that I'll combine into one function for this example:

protected void GV1_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "Delete")
    {
        var deletion = (HRA_internalLesion) GV1.SelectedRow.DataItem;
        DataContext conn = new DataContext();

        conn.HRA_internalLesions.DeleteOnSubmit(deletion); 
        conn.SubmitChanges();
    }
}

I'm sure the var deletion line is not returning the Linq to SQL object I want.

Answer 1

The DataItem property isn't available after the control has been rendered initially. You'll have to re-create the data object from your fields on the page if you want to do this.

Edit:

From MSDN:

The DataItem property is only available during and after the RowDataBound event of a GridView control.

I'm not sure why it says "and after" -- this is confusing language to me -- but nonetheless, there's documented evidence.