C#•3w ago

✅ Razor pages template gives me an immediate build error

Why is it telling me "The type or namespace name 'EntityFrameworkCore' does not exist in the namespace 'Microsoft.AspNetCore.Identity'" right after I generated a Razor pages project template with single user authentication enabled? How do I fix this?

22 Replies

sibber•3w ago

thats weird try adding the package manually

King TMK 🎗OP•3w ago

I've tried to remove and add them again, but I'm getting the same thing

sibber•3w ago

you have the package added? can i see the csproj?

King TMK 🎗OP•3w ago

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>net8.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
    <UserSecretsId>aspnet-WebApplication1-a42b01ed-c7dc-4819-ab9a-22e019eed651</UserSecretsId>
  </PropertyGroup>

  <ItemGroup>
      <PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="8.0.8" />
      <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="8.0.8" />
      <PackageReference Include="Microsoft.AspNetCore.Identity.UI" Version="8.0.8" />
      <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.8" />
      <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.8" />
  </ItemGroup>

</Project>

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>net8.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
    <UserSecretsId>aspnet-WebApplication1-a42b01ed-c7dc-4819-ab9a-22e019eed651</UserSecretsId>
  </PropertyGroup>

  <ItemGroup>
      <PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="8.0.8" />
      <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="8.0.8" />
      <PackageReference Include="Microsoft.AspNetCore.Identity.UI" Version="8.0.8" />
      <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.8" />
      <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.8" />
  </ItemGroup>

</Project>

sibber•3w ago

to be clear, youre just creating the project and changing nothing right?

King TMK 🎗OP•3w ago

That's right

sibber•3w ago

visual studio?

King TMK 🎗OP•3w ago

I created it and immediately tried to build it but it gave me build errors Yes

sibber•3w ago

can you clean and try to build from the cli? make sure obj and bin are deleted

King TMK 🎗OP•3w ago

Where's obj and bin, I'm completely new to dotnet

sibber•3w ago

in the output folder oops sorry its in the same folder as the csproj it is the build output folder forgot for a sec anyway just delete those, then dotnet clean and dotnet build

King TMK 🎗OP•3w ago

Thanks, I did now, but after building it's telling me

C:\Users\tomkr\source\repos\WebApplication1\WebApplication1\WebApplication1.csproj : error NU1101: Unable to find package Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore. No packages exist with this id in source(s): C:\Program Files\dotnet\library-packs, Microsoft Visual Studio Offline Packages
C:\Users\tomkr\source\repos\WebApplication1\WebApplication1\WebApplication1.csproj : error NU1101: Unable to find package Microsoft.AspNetCore.Identity.EntityFrameworkCore. No packages exist with this id in source(s): C:\Program Files\dotnet\library-packs, Microsoft Visual Studio Offline Packages
C:\Users\tomkr\source\repos\WebApplication1\WebApplication1\WebApplication1.csproj : error NU1101: Unable to find package Microsoft.AspNetCore.Identity.UI. No packages exist with this id in source(s): C:\Program Files\dotnet\library-packs, Microsoft Visual Studio Offline Packages
C:\Users\tomkr\source\repos\WebApplication1\WebApplication1\WebApplication1.csproj : error NU1101: Unable to find package Microsoft.EntityFrameworkCore.SqlServer. No packages exist with this id in source(s): C:\Program Files\dotnet\library-packs, Microsoft Visual Studio Offline Packages
C:\Users\tomkr\source\repos\WebApplication1\WebApplication1\WebApplication1.csproj : error NU1101: Unable to find package Microsoft.EntityFrameworkCore.Tools. No packages exist with this id in source(s): C:\Program Files\dotnet\library-packs, Microsoft Visual Studio Offline Packages

C:\Users\tomkr\source\repos\WebApplication1\WebApplication1\WebApplication1.csproj : error NU1101: Unable to find package Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore. No packages exist with this id in source(s): C:\Program Files\dotnet\library-packs, Microsoft Visual Studio Offline Packages
C:\Users\tomkr\source\repos\WebApplication1\WebApplication1\WebApplication1.csproj : error NU1101: Unable to find package Microsoft.AspNetCore.Identity.EntityFrameworkCore. No packages exist with this id in source(s): C:\Program Files\dotnet\library-packs, Microsoft Visual Studio Offline Packages
C:\Users\tomkr\source\repos\WebApplication1\WebApplication1\WebApplication1.csproj : error NU1101: Unable to find package Microsoft.AspNetCore.Identity.UI. No packages exist with this id in source(s): C:\Program Files\dotnet\library-packs, Microsoft Visual Studio Offline Packages
C:\Users\tomkr\source\repos\WebApplication1\WebApplication1\WebApplication1.csproj : error NU1101: Unable to find package Microsoft.EntityFrameworkCore.SqlServer. No packages exist with this id in source(s): C:\Program Files\dotnet\library-packs, Microsoft Visual Studio Offline Packages
C:\Users\tomkr\source\repos\WebApplication1\WebApplication1\WebApplication1.csproj : error NU1101: Unable to find package Microsoft.EntityFrameworkCore.Tools. No packages exist with this id in source(s): C:\Program Files\dotnet\library-packs, Microsoft Visual Studio Offline Packages

sibber•3w ago

ah you need to add nuget.org as a source

King TMK 🎗OP•3w ago

How do I do that, and how come?

sibber•3w ago

what does dotnet nuget list source output?

King TMK 🎗OP•3w ago

Registered Sources:
  1.  Microsoft Visual Studio Offline Packages [Enabled]
      C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\

Registered Sources:
  1.  Microsoft Visual Studio Offline Packages [Enabled]
      C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\

sibber•3w ago

yeah for some reason nuget.org isnt there how did you download .net btw? dotnet nuget add source https://api.nuget.org/v3/index.json --name nuget.org to add it

King TMK 🎗OP•3w ago

I believe it was through the installer from the browser, I don't remember now, it was quite some time ago It looks like it's building correctly now

sibber•3w ago

every once in a while someone would come here with the same issue where nuget.org not added as a source and im yet to figure out how that happens it should be the default

King TMK 🎗OP•3w ago

Don't give up Thank you though, it built now

sibber•3w ago

$close

MODiX•3w ago

If you have no further questions, please use /close to mark the forum thread as answered

Gaming

Programming

✅ Razor pages template gives me an immediate build error