Typical customer invoice scenario:
ObservableCollection in a viewmodel that holds LineItems. The view lists the LineItems with a calculated LineTotal shown at the end of each line. The, there's a GrandTotal shown at the bottom of the page.
If the user makes a change to Qty, to update other items on the page, I use an EventToCommand trigger on a TextBox that is bound to the Qty. When the command is invoked, I manually recalculate line totals and invoice totals to reflect changes.
Is there a better way to reflect changes made by the user to the Qty boxes? A way to force "rebinding" to refresh the page? Is there anything in Fody or Catel that handles this?
