Beyond Dependency Injection: Listing 3.

Selecting the right IDataFeed.

class DataFeedHandlerSelector : IHandlerSelector
  private bool networkAvailable;
  public DataFeedHandlerSelector()
    // Hook in to network monitoring component
    // to set networkAvailable flag.
  public bool HasOpinionAbout(string key, Type service)
  public IHandler SelectHandler(string key,
    Type service,
    IHandler[] handlers)

About the Author

Patrick Steele is a senior .NET developer with Billhighway in Troy, Mich. A recognized expert on the Microsoft .NET Framework, he’s a former Microsoft MVP award winner and a presenter at conferences and user group meetings.

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