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I'm working on a business application (C#, WPF, EF, MVVM). I need to load a bunch of items from database, create view models for them and put them in a window. Is there a way to create the view model in another thread or do something similar to speed up UI?

  1. The approximate average time needed to fetch all items from database = 1s
  2. The approximate average time needed to instantiate all view models = 3s

I'm doing the first part through Loaded event of each item. but the second part is the bottleneck. any insight would be appreciated.

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Creating view models in a background thread is generally a bad idea since they need to be bound on controls created on the main thread. I would try to reduce the initialization time first. –  Dtex Jan 8 '14 at 15:15
    
Or employ some layered caching. –  Robert Harvey Jan 8 '14 at 21:07
    
@Dtex: Thanks, I can remove some unnecessary graphics. –  Bizz Jan 8 '14 at 21:37
    
@Robert: can you explain how layer caching can be done? –  Bizz Jan 8 '14 at 21:37
1  
msdn.microsoft.com/en-us/library/dd997362(v=vs.110).aspx –  Robert Harvey Jan 8 '14 at 22:16

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