I wish this help you You can subscribe to the Workbook.SheetChanged event for changes to any sheet in the workbook, or the Worksheet.Change event for changes to a particular sheet. Excel has no concept of "adding" or "deleting" rows like SQL, so there's no way to pinpoint to just those types of events - you'll have to determine what changed in your event handler and decide if you want to do anything about it or not.
wish helps you In an ideal MVVM implementation there's neither better nor alternative place, because you aren't likely to know when or how a view communicates with a view model. In fact, a view model shouldn't know anything about a view. A view might be a Silverlight UI or a console app, or a test mock-up, or whatever else. According to general thoughts then, constructor seems to be the only place where 'change tracking' should be disabled. If you try following the MVVM strictly, you should accept your view models as main objects and views as secondary ones. I mean a view shouldn't introduce any logic that doesn't relate to the specific view implementation. It only displays the current view model state and communicates a user's actions to the view model. If it's true, then you won't need to turn change tracking off wherever except the constructor.
Change Tracking has cleaned up tracking information although Auto Clean up is set to false
This might help you I discovered that the problem occurs when I restore the server database from backup and before any change has happened on the database. So the simple solution was that after I restore the database from backup I just go and update any column of any row in any tracked table and that fixes the problem!
EntityFramework Change Tracking not tracking changes
this one helps. Those tracking algorithms are for tracking complex patterns, like a face in a video where the lighting changes, and the direction of the head is changing. If in you application you can use color or light to mark your object uniquely, then that will be the fastest algorithm and simplest. if you need very precise localization, then you need to consider using a marker, the reason is that a marker allows sub-pixel localization.