I've made a list of everything that can helps to improve performance in a very complex application with a lot of controls. If you want to add yours, your welcome!

  • If you know the size of the control, remove the Auto and enter the real value, so the parent doesn't have to parse all childs to check the size he needs
  • Set the parameter IsHitTestVisible=False if the element doesn't need to be interactive
  • Freeze all object that you can
  • Use Static resources instead of Dynamic resources
  • Don't use the Ellipse object, transform the Ellipse to a Path
  • Don't use TextBox or Label if you can use a TextBlock
  • Use Canvas instead of Grid when possible
  • No FlowDocument
  • Virtualize!! VirtualizingStackPanel instead of StackPanel
  • Don't use List, the ObservableCollection is way faster
  • Use the Drawing library, it's faster then the Shapes library
  • Check your binding! If a binding doesn't works, it can be very slow
  • Don't use Visibility.Hidden, use Visibility.Collapsed when you can
  • DependencyProperty is 3x faster then INotifyPropertyChanged
  • StreamGeometry is faster then PathGeometry
  • Clear Event Handlers when you've done with them!
  • Don't use the Object Opacity property, if you can, use his color opacity
  • Check if your application is Hardware rendering (Tier-2)
  • Reduce size/quality of your image when you can
  • Rendering image is way faster then rendering vector!

Tools that I use:

  • WPF Inspector
  • Snoop
  • WPFPerf suite
  • Visual Studio profiler
  • CLR Profiler for .NET
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