Get EntityId for MarketingList Member CRM 2011

• martedì 22 maggio 2012 14:30

   

   
  

  0

  I'm sure someone can help me out here, I'm really much ripping my hair out
  why my code below doesn't work. Basically I have a custom entity wich has a list
  (and all its list members inside the list) with my custom entity(registerd on
  post-create) I create another list which imports all those list members into
  another list. Now I need to retrieve the entityID for each list member (in order
  for me to add them) My code below (just for one list member for testing
  purposes):

  // GET LIST MEMBER 
  QueryByAttribute query = new QueryByAttribute("listmember");
  query.AddAttributeValue("listid", m_list_ID.Id);
  ColumnSet cs = new ColumnSet();
  cs.AddColumns("entityid");
  query.ColumnSet = cs;
  EntityCollection entityCollection = service.RetrieveMultiple(query);
  
  
  Guid g = Guid.Empty;
  g = (Guid)entityCollection.Entities[0].Attributes["entityid"];
  

  To check the guid I output the GUID on another field as a string just to
  check if it has th right one, but when I try to save the form I get the error
  "System.InvalidCastException: Specified cast is not valid.". On another note, which is quite strange to me is

  when I try the same with "listmemberid" which is also in listmember table I get the GUID, its just when I try

  to grab the entityId I get this error.

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