aspnet-codegenerator: No code generators available, Even after adding Microsoft.VisualStudio.Web.CodeGeneration.Design

Question

Unable to generate scaffolding using aspnet-codegenerator, below is what I tried:

1. Created an ASP.Net RazorPages application using dotnet new webapp

2. Did a dotnet build

3. Installed dotnet-aspnet-codegenerator using

   dotnet tool install --global dotnet-aspnet-codegenerator --version 3.1.4

4. Ran dotnet aspnet-codegenerator --help

   It says: No code generators are available in this project.Add Microsoft.VisualStudio.Web.CodeGeneration.Design package to the project as a NuGet package reference.

5. Added the package mentioned in step 4 using

   dotnet add package Microsoft.VisualStudio.Web.CodeGeneration.Design

   Package added is:

   <ItemGroup> <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="3.1.4" /> </ItemGroup>

6. Again ran: dotnet build

   Final-Step

7. Ran dotnet aspnet-codegenerator --help

   Again it says: No code generators are available in this project.Add Microsoft.VisualStudio.Web.CodeGeneration.Design package to the project as a NuGet package reference.

.Net core installed version: 3.1.401

Os: Ubuntu 20.04

Answer 1

I have same problem when upgrade from .net core 3.1.4 to 5.0.1.

My solution:

1. update global tools:

  dotnet tool install --global dotnet-aspnet-codegenerator
  dotnet tool update --global dotnet-aspnet-codegenerator
  dotnet tool install --global dotnet-ef
  dotnet tool update --global dotnet-ef

2. add/update links to packages

  dotnet remove package Microsoft.VisualStudio.Web.CodeGeneration.Design
  dotnet add package Microsoft.VisualStudio.Web.CodeGeneration.Design
  dotnet add package Microsoft.EntityFrameworkCore.Design

2. Replace string netcoreapp3.1.4 to net5.0 in .csproj and launch.json files
3. Clear directories
   • bin
   • obj
4. Rebuild project
5. Finally run:

  dotnet aspnet-codegenerator --help

If all fine it will show available generators.

Answer 2

This is already a few month old, but I ran into it recently for all my projects.

In case someone else lands on this page, the solution in my case(MAC OS), was to uninstall and reinstall dotnet-aspnet-codegenerator.

Run in terminal:

dotnet tool uninstall --global dotnet-aspnet-codegenerator

dotnet tool install --global dotnet-aspnet-codegenerator --version 3.1.4

Answer 3

The root cause of this problem has been described in this issue as the .NET code expecting a case-insensitive filesystem which fails on a Linux host.

A suggested workaround would be to temporarily mount you ~/.nuget directory on a vfat filesystem.

To do so create a dummy file holding the filesystem

dd if=/dev/zero of=/tmp/mynuget bs=1024k count=2000
mkfs.vfat /tmp/mynuget

and then mount it

sudo mount -o uid=myuser,gid=myuser -t vfat /tmp/mynuget /home/myuser/.nuget

and use it

dotnet restore
dotnet aspnet-codegenerator ...