Fixing that as well as changing my binding mode to Two Way and adding the Notify Property Changed to my class declaration fixed the issue.
I have a Data Grid Check Box Column in the Data Grid that is editable.UPDATE - CODE INCLUDED Sorry for not including code, I thought it would be easier to just describe but here are the main View Model properties You're not modifying the Observable Collection itself (such as adding/removing items) but the items INSIDE that collection.The Observable Collection is responsible for notifying its own changes, not changes pertaining to its items.i've a problem updating my datagrid when clicking the button by using Notify Property Changed. Items Source in code behind, but it doesn't if i set it in xaml. updating works fine, but the ui is only updating if set the Items Source in code behind. here's some code of code behind & xaml: the collection is updated via Cmd Collection Changed Execute when clicking the button.