I\'m using Visual Studio to try out Xamarin.Forms. I\'m trying to follow the guide: http://developer.xamarin.com/guides/cross-platform/xamarin-forms/xaml-for-xamarin-forms/getti
It appears this is caused by many things so if you've read all of these and haven't resolved it yet:
Mine was caused by the Solution Configuration being set to Release. Changed to Debug and error resolved.
add using Xamarin.Forms.Xaml
tested on Visual Studio 2017
Check page text x:Class="AppName.Page1"
. AppName must be your app name
I had a caching issue when I encountered this error.
To get this fixed, simply uninstall last version of Xamarin.Forms package and reinstall a previous working version.
When the rebuild is successful, then update the package again to the latest version.
Updating the Xamarin.Forms NuGet package should do the job
Change Page properties to :
BuildAction => Embedded resource
CustomTools => MSBuild:UpdateDesignTimeXaml