Add new scaffolded item error (Bug)

[Yuant-tobing]

Scaffolding items for:

• API Controller with actions, using Entity Framework

(Error : Method not found: System.Type.Microsoft.EntityFrameworkCore.Metadata.Iproperty.getClrType()'.')

• MVC Controller with views, using Entity Framework

(Error : Method not found: Boolean Microsoft.EntityFrameworkCore.Metadata.Iproperty.getlsShadowProperty'.')

Steps to reproduce:

• Add new project
• Add context and etc..
• Add migration data by PMC command "Add-Migration ProjectInitialCreate"
• Update database by PMC command "Update-Database"
• Add new scaffolded items (ERROR)

Target framework(s):

ASP.NET Core SDK v 3.0.0-preview4.19212.13

Package version

<PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.2.3" />

[Duelbat]

Any news on this issue ? This error is occurring in core 3.0.0 preview 5 as well .

[BehzadA]

Any news on this issue ? This error is occurring in core 3.0.0 preview 5 as well .

#986 (comment)

[crbeckman]

Still an issue. Changed "" to "". Using Visual Studio Community 2019 Version 16.0.4. Scaffolding issues have been around for numerous preview builds and still an issue with 2019 16.0.4.

[crbeckman]

Sorry, it seems my package references were deleted. they were codegeneration.Design version2.2.3 changed to version 3.0.0-preview5-19264-04.

[Rick-Anderson]

@seancpeters can we get an ETA on when this will be fixed. I can't update my tutorials for 3.0 until this is fixed. Do you have a work-around?
dotnet --version
3.0.100-preview7-012801
Error

dotnet aspnet-codegenerator razorpage -m Contact -udl -dc ApplicationDbContext -outDir Pages\Contacts --referenceScriptLibraries
Building project ...
Finding the generator 'razorpage'...
Running the generator 'razorpage'...
Attempting to compile the application in memory.
Attempting to figure out the EntityFramework metadata for the model and DbContext: 'Contact'
info: Microsoft.EntityFrameworkCore.Infrastructure[10403]
      Entity Framework Core 3.0.0-preview7.19352.17 initialized 'ApplicationDbContext' using provider 'Microsoft.EntityFrameworkCore.SqlServer' with options: None
Method not found: 'Boolean Microsoft.EntityFrameworkCore.Metadata.IProperty.get_IsShadowProperty()'.
   at Microsoft.VisualStudio.Web.CodeGeneration.ActionInvoker.<BuildCommandLine>b__6_0()
   at Microsoft.Extensions.CommandLineUtils.CommandLineApplication.Execute(String[] args)
   at Microsoft.VisualStudio.Web.CodeGeneration.ActionInvoker.Execute(String[] args)
   at Microsoft.VisualStudio.Web.CodeGeneration.CodeGenCommand.Execute(String[] args)

[Rick-Anderson]

@seancpeters using the latest VS19 preview, I was able to scaffold so it's not urgent for me.

[vijayrkn]

This is fixed in the latest version.

[guilhermesoatto]

I have the same problem

using the last version
try to add scaffold item using netcore 3.1

[jrkcoder]

Just hit this using ASP.NET Core 5.
VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
Tool 'dotnet-aspnet-codegenerator' (version '5.0.1') was successfully installed.
PM> aspnet-codegenerator razorpage -m Contact -udl -dc ApplicationDbContext -outDir Pages\Contacts --referenceScriptLibraries
aspnet-codegenerator : The term 'aspnet-codegenerator' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and
try again.
At line:1 char:1

• aspnet-codegenerator razorpage -m Contact -udl -dc ApplicationDbConte ...

•   + CategoryInfo          : ObjectNotFound: (aspnet-codegenerator:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
  
  

PM>

[jrkcoder]

........ was trying to work through example at
https://docs.microsoft.com/en-us/aspnet/core/security/authorization/secure-data?view=aspnetcore-5.0#create-the-starter-app