How to fix "InvalidOperationException: PixelShader must be set on ShaderEffect" VS2017 error?

4
votes

I am getting this error message on VS2017 designer view of my WPF (.NET 4.5) application. I searched about it but couldn't find a solution. Did someone come across this error? If so, could you share the the details on fixing it?

InvalidOperationException: PixelShader must be set on ShaderEffect.

2
wpfvisual-studio-2017
Detailed error here pastebin.com/JkDx9mAx – Vignes
Did you ever figure this out? Only some of the folks on my team are getting this error when rendering the design view. – RubberDuck
Unfortunately no – Vignes

2 Answers

0
votes

In my case, I had accidentally disabled “Project Code”. Re-enabling it fixed the problem.

https://docs.microsoft.com/en-us/visualstudio/designers/debugging-or-disabling-project-code-in-xaml-designer?view=vs-2019

Icon furthest to the right “Enable Project Code”

0
votes

when I set the build setting to X64 I can not see the Design. but when I set the build setting to "AnyCPU" I can see the design page. I have not resolve it.