title: Package Microsoft.AspNetCore.Components.WebAssembly 5.0.0 is not compatible with netstandard2.1 (.NETStandard,Version=v2.1)
body: <p>I created a hosted WASM Blazor app using the Blazor client template in Visual Studio. I am trying to upgrade the Microsoft.AspNetCore.Components.WebAssembly package in the Client project from 3.2.1 to 5.0. I get this error:</p>
  <p>Package Microsoft.AspNetCore.Components.WebAssembly 5.0.0 is not compatible with netstandard2.1 (.NETStandard,Version=v2.1). Package Microsoft.AspNetCore.Components.WebAssembly 5.0.0 supports: net5.0 (.NETCoreApp,Version=v5.0)  BlazorApp1.Client</p>
  <p>The client project is targeting .NET Standard 2.1. I am not clear about the difference between targeting .NET standard and targeting .Net Core. I thought .NET Core 5.0 implements all of .NET Standard 2.1. Only .NET Standard target options are available.</p>
  <p>How does one upgrade that package?</p>
  <p>Also, there's no version 5.0 of Microsoft.AspNetCore.Components.WebAssembly.Build. Did the package get obsoleted?</p>