Using Moq at Blend design time
- by adrian hara
This might be a bit out there, but suppose I want to use Moq in a ViewModel to create some design time data, like so:
public class SomeViewModel
{
public SomeViewModel(ISomeDependency dependency)
{
if (IsInDesignMode)
{
var mock = new Mock<ISomeDependency>();
dependency = mock.Object; // this throws!
}
}
}
The mock could be set up to do some stuff, but you get the idea.
My problem is that at design-time in Blend, this code throws an InvalidCastException, with the message along the lines of "Unable to cast object of type 'Castle.Proxies.ISomeDependencyProxy2b3a8f3188284ff0b1129bdf3d50d3fc' to type 'ISomeDependency'." While this doesn't necessarily look to be Moq related but Castle related, I hope the Moq example helps ;)
Any idea why that is?
Thanks!
