Xamarin Forms与Visual Studio 2017

Question

I am new to Xamarin and have created a cross-platform project in Visual Studio 2017.

When I build that project, I am getting the below issue:

Severity: Error
Code: MSB4062
Description: The "Xamarin.Forms.Build.Tasks.XamlGTask" task could not be loaded from the assembly C:\Users\E6430\.nuget\packages\xamarin.forms\3.1.0.637273\build\netstandard2.0\Xamarin.Forms.Build.Tasks.dll. Could not load file or assembly 'netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The system cannot find the file specified. Confirm that the <UsingTask> declaration is correct, that the assembly and all its dependencies are available, and that the task contains a public class that implements Microsoft.Build.Framework.ITask.
Project: TestApp
File: C:\Users\E6430\.nuget\packages\xamarin.forms\3.1.0.637273\build\netstandard2.0\Xamarin.Forms.targets
Line: 84

My NuGet is also get coloured with yellow colour.

Answer 1

Try this:

1. Unload project from the solution
2. Restart visual studio and open solution
3. Reload project
4. Rebuild

If persist:

1. Just run Visual studio as Administrator!

Ref: https://forums.xamarin.com/discussion/106784/error-with-latest-nuget-v2-5-0-77-xamarin-forms-build-tasks-gettasksabi-task-could-not-be-loaded