XAML Editor Extraordinarily Slow
Has anyone else experience incredibly slow performance in the XAML editor in VS 2010? If I have a new project with a limited number of files, the performance is fine. However, if I have a project with a larger number of XAML files, the XAML editor hangs intermittently every few seconds, making it almost impossible to use.
I should also note that the performance is only slow in one particular project where I am referencing DevExpress 2010. I am not certain if this is related.
Any suggestions on solutions to this problem would be greatly appreciated.
Chris
Go to
Tools > Options > TextEditor > XAML > Misc
Check Always open documents in XAML view and uncheck Automatically populate toolbox items .
This fixed my same problem.
If you don't need the visual designer, you can select a different editor in visual studio:
Right click the xaml file -> Open With... -> Source Code (Text) Editor
You will only lose the split view, intellisense etc. should still work.
If you need to check something in the designer you can still click 'view designer' to open the normal XAML editor again.
If you want to improve the performance of the visual designer, try checking DesignerProperties.GetIsInDesignMode in your code-behind. The visualiser instantiates your controls to know how to display them, thus executing parts of the code-behind.
Like the OP, I had extreme lag in the xaml editor on a project that relied heavily on DevExpress WPF controls. After trying unsuccessfully to resolve this issue with the other solutions posted here, I eventually tried deleting my Solution User Options (.suo) file , which is usually located in the same folder as the solution (.sln) file. This immediately resolved the issue. You may want to read this post about what visual studio stores in the suo file so you can reset anything important (such as build configuration - mine always defaults the active solution platform back to "Mixed Platforms" for example)
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