Unhandled Exception in XAML - How to solve?

Question

请帮助我理解问题并解决此问题： 此http://img689.yfrog.com/img689/5357/errornj.jpg谢谢！

Answer 1

It looks like an assembly is missing, it may be Microsoft.Expression.Interactions or something that assembly itself needs. It could also be the required version or public key token is incorrect.

Answer 2

If it executes OK, but you cannot see the library at design-time, I wonder if it's because the dll is 'locked'?

I had exactly this problem here

Answer 3

您正在尝试从xaml访问不存在的控件或触发器。

Answer 4

try removing the assembly and its footprint from app.config if there is one and try adding the library again. also check from the project props that you are targeting the correct framwork version...