解决内置DI不能使用名字注入不同实例问题

 

public Enum TestType
{
    TypeA,TypeB
}

 

public Interface ITest
{
　　　 TestType Type { get; }
    void SayHi();
}

public Class TestA:ITest
 {
　  Public TestType Type => TypeA;
     public void SayHi()
     {
          Console.WriteLine("TestA");
      }
  }

  
 public Class TestB:ITest
{
　　Public TestType Type => TypeB;
      public void SayHi() 
     { 
           Console.WriteLine("TestB");
     } 
}       

1、program.cs中注册服务

builder.Services.AddScoped<ITest,TestA>();
builder.Services.AddScoped<ITest,TestB>();

2、新建类TestDomainService.cs，注入服务

public class TestDomainService
{
  private readonly ITest testA;
  private readonly ITest testB;    
  public TestDomainService(IEnumerable<ITest> tests)
    {
       this.testA = tests.First(t=>t.Type == TestType.TypeA);
       this.testB = tests.First(t=>t.Type == TestType.TypeB);
    } 
}