Question 2: Is loading all resources in App.xaml once better than loading the resources every time with merged dictionary? However, I feel pretty confidently that spreading your resources to many merged dictionaries won’t hurt the startup time much and is insignificant. So this benchmark is inconclusive in a way. This benchmark is hard to check since it’s hard to mock as much resources as you’d have in an actual application. It’s created at first use. To prove that, I created this simple TrueVisibilit圜onverter : When is an instance of the resource created?Ī resource instance is not created at declaration. And that is when a resource instance is actually created. Is DynamicResource instead of StaticResource an issue? How big of an issue?’īefore answering any of those, there’s an important thing to understand with WPF resources.Is loading all resources in App.xaml once better than loading the resources every time with merged dictionary?.one long App.xaml file means longer application startup time? Is splitting resources in App.xaml to many Merged Dictionaries file vs. Here’s what I want answered with this benchmark: This benchmark is supposed to show, in numbers, how any approach affects performance. If you’re new to WPF resources, I suggest reading my Explicit, Implicit and Default styles in WPF post before diving into this one. You can see all the approaches and what I think is best practice in my WPF Merged Dictionary problems and solutions post. We can place all our resources in App.xaml or use merged dictionaries each time. WPF is very dynamic and allows us to use resources in many different ways.
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