Wpf mvvm listview not updating
The newly received data may contain less, more or the same number of items and also the items itself may have changed.The In order to avoid refreshing the complete List View I do a simple comparison of the newly retrieved list with the current _item List, change items which are not the same and add/remove items if necessary.
Observable Collection only notifies the collection changes not the changes in each of the item.I tried some possible solutions to this problem, but none of them worked. But when you update any property, WPF does not know about this because object does not changing.So maybe there is something generally wrong with my approach. Use Datatemplate or try call On Property Changed with empty string.So, after looking at MSDN, I found this article: https://docs.microsoft.com/en-us/dotnet/api/system.componentmodel.inotifypropertychanged?redirectedfrom=MSDN&view=netframework-4.7.2 To summarize, you just need the item to implement this interface and it will automatically detect that this object can be observed.