Blazor DI works differently in .razor and business class

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  Hi there
  In my Blazor server application I can easily instantiate the class, say, DAL class in .razor part:
  
      @page "/"
      @inject DAL.DALClass dal
      
  and use it in my @code{} scope.
  
  But if I try to instantiate it in my domain logic class like
  
      public class ServerDesktopDTO : DesktopDTO
          {
              [Inject]
              protected DAL.DALClass dal { get; set; }
      ...
      
  dal is always null. 
  Why it works differently?
  How to inject it to my class using the [Inject] attribute and DI container? 
  Thanks.

  • Moved by Drake_WuMicrosoft contingent staff Friday, July 24, 2020 1:32 AM

  Thursday, July 23, 2020 2:28 PM