Subscribing to .Net event from COM RSS

• • Reply
  

  shanenarri

  Member

  2 Points

  26 Posts

  Subscribing to .Net event from COM

  Jul 06, 2010 10:33 AM|LINK

   Hi,

  Can somebody tell me how to subscribe to .net event from the COM through interoperability?

  namespace EventSource
  {
      [Guid("A66356CF-7408-4bf5-B02E-17158FE30DA3")]
      [InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
      public interface IBugEvents
      {
          [DispId(1)]
          void Hungry();
  
  
          [DispId(2)]
          void Found(string item);
      }
  [ComSourceInterfaces(typeof(IBugEvents))]
      public class Bug
      {
          public delegate void HungryEventHandler();
          public delegate void FoundEventHandler(string item);
  
  
          public event HungryEventHandler Hungry;
          public event FoundEventHandler Found;
  
  
      }
  }

  Can somebody tell me how to Subscribe to the Hungry and Found events from the COM?If possible help me with COM Code.
  

• • Reply
  

  shanenarri

  Member

  2 Points

  26 Posts

  Re: Subscribing to .Net event from COM

  Jul 12, 2010 04:48 AM|LINK

  Help me on subscribing to .net events from COM environment.

  Help me with some COM Code. 

• • Reply
  

  pythfr

  Member

  2 Points

  1 Post

  Re: Subscribing to .Net event from COM

  Sep 10, 2010 02:42 PM|LINK

  Hi,

  I had the same problem. You must fire the events; actually you just declare them.

  namespace EventSource
  {
      [Guid("A66356CF-7408-4bf5-B02E-17158FE30DA3")]
      [InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
      public interface IBugEvents
      {
          [DispId(1)]
          void Hungry();
  
  
          [DispId(2)]
          void Found(string item);
      }
  
  
      [ComSourceInterfaces(typeof(IBugEvents))]
      public class Bug
      {
          public delegate void HungryEventHandler();
          public delegate void FoundEventHandler(string item);
  
  
          public event HungryEventHandler Hungry;
          public event FoundEventHandler Found;
          
  
          public void OnHungry()
          {
                 if(Hungry != null)
                 {
                           Hungry();
                 }
          }
            
  
          public void OnFound( string item)
          {
                 if(Found != null)
                 {
                          Found(item);
                 }
          }
      }
  }
  

  Here are some interesting reference:

  - http://www.softinsight.com/DotNetAndCOM.pdf 

  - COM and .NET Interoperability by Andrew Troelsen  Apress Ed

  Bye

  .NET/COM interoperability delegate

  • Edited by pythfr on Sep 10, 2010 02:53 PM
  • Edited by pythfr on Sep 10, 2010 02:56 PM