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I upgraded Xamarin.Forms from 18.104.22.1686-pre1 to 22.214.171.1249-pre2 and got lots of errors along the lines of "App does not contain a definition for InitializeComponent" and "App.OnStart: No suitable method found to override". It turns out the upgrade had set the Build Action for all the XAML files to None. Changing back to Embedded Resource fixed the problems.
Note that I experienced this on two separate projects on two separate machines.
I'm trying to reproduce this, but I haven't been able to so far. Did you observe this with Visual Studio 2017 or Visual Studio for Mac? What type of project are the XAML files in: shared, PCL, or .netstandard library?
When providing the requested information, please set the report's status back to NEW otherwise we may close this issue after 30 days of no response. Thanks!
VS 2017. Both PCL and .Net Standard 1.4.
A .netstandard library that contains xaml files will fail to build after being updated to Xamarin.Forms 2.4.0-pre2 because the Build Action for the xaml files is reset to None.
### Steps to Reproduce
1. Open the attached project in VS2017
2. Rebuild the project
3. Update the Xamarin.Forms package to 2.4.0-pre2
4. Rebuild the project
### Expected Results
The project will successfully rebuild both times.
### Actual Results
The project rebuilds the first time when it uses Forms 2.4.0-pre1. However after updating to -pre2 it no longer builds successfully until the Build Action for the xaml files is set back to EmbeddedResource.
Created attachment 24662 [details]
Should be fixed in 2.4.0-pre3. Thanks!