Chapter08 - ColorViewList : System.Reflection.TargetInvocationException

pcaridade

hi,

I am following this tutorial :

https://github.com/xamarin/xamarin-forms-book-samples/tree/master/Chapter08/ColorViewList

but when running the application I got the error : System.Reflection.TargetInvocationException

I think that the problem/errror message is related to some error in Xaml files:

https://github.com/xamarin/xamarin-forms-book-samples/blob/master/Chapter08/ColorViewList/ColorViewList/ColorViewList/ColorView.xaml

https://github.com/xamarin/xamarin-forms-book-samples/blob/master/Chapter08/ColorViewList/ColorViewList/ColorViewList/ColorViewListPage.xaml

can someone help me to solve this problem?

regards,
PCaridade

Microsoft Visual Studio Professional 2015 14.0.25431.01 Update 3
Visual Studio Tools for UWA 14.0.25527.01
Xamarin 4.2.0.719 (15694b9)
Xamarin.Android 7.0.1.6 (5a02b03)
Xamarin.iOS 10.2.0.4 (b638977)

Jorge.Garcia.CP

I have been playing this project and I don't have any problem. Well, I've had to change the a method in ColorView.xaml.cs because it's deprecated but I don't think that is relevant to your problem:

Color color = (Color)colorTypeConv.ConvertFrom(colorName); // deprecated
Color color = (Color)colorTypeConv.ConvertFromInvariantString(colorName); // no deprecated

Your error appear on every platforms?

Jorge.Garcia.CP

I have been playing this project and I don't have any problem. Well, I've had to change the a method in ColorView.xaml.cs because it's deprecated but I don't think that is relevant to your problem:

Color color = (Color)colorTypeConv.ConvertFrom(colorName); // deprecated
Color color = (Color)colorTypeConv.ConvertFromInvariantString(colorName); // no deprecated

Your error appear on every platforms?

pcaridade

hi,
I saw the "deprecated" warning, but never crossed my mind that a "deprecated" function would cause an error.
In Android (native/java) sometimes I use deprectated functions or the functions become deprecated with new versions, but the application still running until I have time to upgrade them to new functions.
Thank you.

Moelgaard

I struggled for a while with this as well, perhaps even an hour or two - Thank you for this!