Wpf listview binding observablecollection not updating
A common, sensible, and logical pattern is to keep usages of elements as close to where you use them as possible. Resources, or break up their themes into multiple Resource Dictionaries for clarity and separation.
Open up your app in the debugger and play around, especially where there is slowness. Relative Source in Data Templates may also result in bindings that break initially, but then later resolve properly.Finally, there are things (this, this, this, this, this, and this) that simply perform worse than you likely expect.Finally, there are old UI/Win Forms problems (this, this, and this) that never really went away—they’re just less likely to happen.and its subclasses List Box and List View exacerbate performance problems because these controls are highly dynamic (resolution happens “late”), involve WPF collections (which are slow), and have difficult and unpredictable lifetimes for their child controls.Scrollbar performance is often a big problem in larger WPF apps because of problems that seem trivial for small collections, but suddenly blow up with larger data sets.When an object is added to or removed from an observable collection, the UI is automatically updated.
This happens because, when binding to an observable collection, WPF automatically adds Observable Collection is already bind to Listview.
Grouping in WPF doesn’t perform terribly well, especially with List Views and Grid Views.
Create a collection with mixed viewmodel types–your original collection, and one that represents the “group”.
So all we need to do in xaml file is to specify binding member to each column.
We can achieve it by “Display Member Binding” attribute and “Binding” markup extension.
Every time a binding error occurs, your app hangs for just a split second as it writes out errors to the trace log.