Support ASP.NET Core 3.0

[HamedFathi]

You can not define a return type for ConfigureServices in ASP.NET Core 3.0. I got an error on this.

public IServiceProvider ConfigureServices(IServiceCollection services)
{
    ...
}

Can you show me how to use you amazing IoC with ASP.NET Core 3.0 preview 3?

[dadhi]

Will try it soon. Thanks for head up.

[dadhi]

The docs for the reference:
https://docs.microsoft.com/en-us/aspnet/core/fundamentals/dependency-injection?view=aspnetcore-3.0

@HamedFathi, I don't see a problem if you don't return IServiceProvider from the ConfigureServices. Did you try it? What is the next error you have?

[HamedFathi]

@dadhi
Yes, I tried it before, please see the following pictures:

.NET Core 3.0.100-preview3-010431

Unhandled Exception: System.NotSupportedException: ConfigureServices returning an System.IServiceProvider isn't supported.
   at Microsoft.AspNetCore.Hosting.Internal.GenericWebHostBuilder.UseStartup(Type startupType, HostBuilderContext context, IServiceCollection services)
   at Microsoft.AspNetCore.Hosting.Internal.GenericWebHostBuilder.<>c__DisplayClass12_0.<UseStartup>b__0(HostBuilderContext context, IServiceCollection services)
   at Microsoft.Extensions.Hosting.HostBuilder.CreateServiceProvider()
   at Microsoft.Extensions.Hosting.HostBuilder.Build()
   at DryIOC.Program.Main(String[] args) in C:\...\DryIOC\Program.cs:line 18

Related link:

Unable to use ConfigureTestServices with StructureMap

[dadhi]

Instead of creating the Container in your Startup, you may just move it to the host (Program.cs), and make Startup a fully IOC agnostic - see details here: #94 (comment)

In addition, DryIocServiceProviderFactory has couple of optional parameters if you need some customization.

[HamedFathi]

I revert all configs in Startup.cs except AddControllersAsServices

And in Program.cs

Could not load file or assembly 'DryIoc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=dfbf2bd50fcf7768'. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

[dadhi]

This is strange, could you share this sample application with me?

[HamedFathi]

Sure, You can find it here

[dadhi]

I tried to build the sample in vs2019 and .NET Core 3 preview 3, and after some quirks got the same error.

Not sure the reason, but it shoud not relate to DryIoc itself. DryIoc is strongly signed now, is it a problem? or is it a binding redirects? Not sure. But won't spend much time on it until RC. If you have ideas, please help.

[dadhi]

I think a possible workaroud would be the use of source code package for DryIoc.MS.DI, which is not existent. Maybe it is time to make it , hmmm...

[dadhi]

I have published DryIoc.Microsoft.DependencyInjection.src source package and will try it.

[dadhi]

Puzzle solved:

The problem was that the sample project has the same name as the transient dependency (DryIoc).