How do I create a .NET Core 2 MVC solution?

Question

Using MS Visual Studio 2019. Need to create a .NET Core 2 MVC Solution. I need to target .NET Core 2 and not 3 because I need to use some libraries that, unfortunately, doesn't target .NET Core 3.

Is there any way to use Visual Studio 2019 for this, or dotnet new, without using a template that targets 3?

While creating new project, at the last step, there is dropdown to select .Net Core version. You can select — Sh.Imran, Aug 18 '20 at 08:10

score 0 · Answer 1 · answered Aug 18 '20 at 08:18

Make sure you have to 2.x SDK installed, CLI command dotnet --list-sdks

Create a new ASP.NET core webapp project from Visual Studio or CLI --> dotnet new webapp -o myapp
Update your .csproj something like this:

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

  <PropertyGroup>
    <TargetFramework>netcoreapp2.2</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.App" />
    <PackageReference Include="Microsoft.AspNetCore" Version="2.2.0" />
    <PackageReference Include="Microsoft.AspNetCore.Hosting.Abstractions" Version="2.2.0" />
    <PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="3.1.7" />
  </ItemGroup>

</Project>

Update program.cs to use the older IWebHostBuilder

 public class Program
 {
    public static void Main(string[] args)
        => BuildWebHost(args).Run();


    public static IWebHostBuilder CreateWebHostBuilder(string[] args)
        => WebHost.CreateDefaultBuilder(args)
            .UseStartup<Startup>()
            .UseConfiguration(Configuration)
            .Build();
 }

I think you need to add this for razor pages.

// ConfigureServices(IServiceCollection services)
services.AddMvc().AddRazorPagesOptions(async  (opt)  => await Task.CompletedTask);

// Configure(IApplicationBuilder app, IHostEnvironment env)
app
    .UseStaticFiles()
    .UseDefaultFiles();

app.UseMvc()

I'm not sure about the razor pages stuff in #4, never used it. But this should probably work.

Here are some guides:

How do I create a .NET Core 2 MVC solution?

1 Answers1