Fantastic, I did not know that the SelectionDrag event subscription would change the behaviour of the selection type.

Your solution almost fits perfectly. Our specific case could run into an issue since a selectiondrag event subscription could theoretically be done during the hover on the rowselector.

I've modified your code a bit and put the following lines in an override of the Ultragrid. It works perfect now. Thank you!

protected override void OnMouseEnterElement(UIElementEventArgs e)
{
    if (e.Element is RowSelectorUIElement)
    {
        switch (this.DisplayLayout.Override.SelectTypeRow)
        {
            case SelectType.ExtendedAutoDrag:
                this.DisplayLayout.Override.SelectTypeRow = SelectType.Extended;
                break;
            case SelectType.SingleAutoDrag:
                this.DisplayLayout.Override.SelectTypeRow = SelectType.Single;
                break;
            default:
                break;
        }
    }
    base.OnMouseEnterElement(e);
}

protected override void OnMouseLeaveElement(UIElementEventArgs e)
{
    if (e.Element is RowSelectorUIElement)
    {
        switch (this.DisplayLayout.Override.SelectTypeRow)
        {
            case SelectType.Extended:
                this.DisplayLayout.Override.SelectTypeRow = SelectType.ExtendedAutoDrag;
                break;
            case SelectType.Single:
                this.DisplayLayout.Override.SelectTypeRow = SelectType.SingleAutoDrag;
                break;
            default:
                break;
        }
    }
    base.OnMouseLeaveElement(e);
}

Hello Anne,

The best way I found to suppress the dragging when using the row selector is to use the MouseEnter/LeaveElement events to (un)subscribe the SelectionDrag handler. My code looked like:

         private void UltraGrid1_MouseEnterElement(object sender, Infragistics.Win.UIElementEventArgs e)
        {
            if (e.Element is RowSelectorUIElement)
            {
                ultraGrid1.SelectionDrag -= UltraGrid1_SelectionDrag;
            }
        }
 
         private void UltraGrid1_MouseLeaveElement(object sender, Infragistics.Win.UIElementEventArgs e)
        {
            if (e.Element is RowSelectorUIElement)
            {
                ultraGrid1.SelectionDrag += UltraGrid1_SelectionDrag;
            }
        }

This allowed me to select rows on the row selector, but drag them by dragging over the cells themselves. Please note that in order to successfully do the latter I had to set CellClickAction to RowSelect so that my row selection remained when I clicked into the cells.

Please let me know if I can further assist you.

Thank you for looking into it, John. No rush though, this is not a show stopper for us.