I have a WPF application and there is a Datagrid in some pages. This datagrid needs to load 5000 rows at once (Pagination is not an option for me) and this takes ages. I set
Well as Eirik said it might be too late. but i would be glad if it can help others. You can do this EnableRowVirtualization = "True" (so it won't affect your performance in case of large data). And just code this on dgOrders_LoadingRow event.
private void dgOrders_LoadingRow(object sender, DataGridRowEventArgs e)
{
        OrderDetail item = e.Row.Item as OrderDetail; //parse data into your bject type which is 
        if (item != null)
        {
             if (item.Note== "Loss") //your condition
             {
                 e.Row.Background = Brushes.Red;
             }
             else                    //otherwise default color
             {
                 e.Row.Background = Brushes.White;
             }
        }
    }