Getting an instance of BaseCorePipelineManager

Question

In the Sitecore doc Configuring Federated Authentication there are instructions to generate the URL links to initiate Federated Auth -- the lines are:

using Sitecore.Pipelines.GetSignInUrlInfo;
/*
[...]
*/
var args = new GetSignInUrlInfoArgs(site: "website", returnUrl: "/");
GetSignInUrlInfoPipeline.Run(corePipelineManager, args); 

How do I get an instance of the corePipelineManager in order to pass to the GetSignInUrlInfoPipeline? I tried using the

var corePipelineManager = Sitecore.DependencyInjection.ServiceLocator.ServiceProvider.GetService<BaseCorePipelineManager>();

But am getting an error below:

CS1928: 'System.IServiceProvider' does not contain a definition for 'GetService' and the best extension method overload 'System.Web.Mvc.DependencyResolverExtensions.GetService(System.Web.Mvc.IDependencyResolver)' has some invalid arguments

Answer 1

Your code is correct. Just add Microsoft.Extensions.DependencyInjectionnamespace. It contains ServiceProviderServiceExtensions extension class that adds generic methods to the IServiceProvider interface.

At the same time, I would recommend you to use a constructor injection. It is supported in Sitecore and it lets you avoid a ServiceLocator anti-pattern.