Updating Custom Field Using Plugin

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  What am I missing here. I am trying a simple update to a custom field, that is on the form, with the following plug in. I am using strongly typed class generated using the CRMSvcUtil called MyServiceContext. Code is below. If this is not correct, how should I be updating the field? The step for this plug in is registered Pre-Exection on Update message for quotedetail entity. There are no errors but the update never happens. Any pointers. Thank you.

    try
              {
                  IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));
  
                  //throw new InvalidPluginExecutionException("Got the context.");
                  if (context.InputParameters.Contains("Target") && context.InputParameters["Target"] is Entity)
                  //if (context.InputParameters.Contains("Target") && context.InputParameters["Target"] is EntityReference)
                  {
                      //throw new InvalidPluginExecutionException("In target");
                      //EntityReference QuoteDetailEnity = (EntityReference)context.InputParameters["Target"];
                      Entity QuoteDetailEntity = (Entity)context.InputParameters["Target"];
  
                      //throw new InvalidPluginExecutionException("ENTITY IS " + QuoteDetailEntity.LogicalName);
  
                      if (QuoteDetailEntity.LogicalName == "quotedetail")
                      {
                          //throw new InvalidPluginExecutionException("ENTITY IS " + QuoteDetailEnity.LogicalName);
  
                          IOrganizationServiceFactory serviceFactory = (IOrganizationServiceFactory)serviceProvider.GetService(typeof(IOrganizationServiceFactory));
  
                          IOrganizationService service = serviceFactory.CreateOrganizationService(context.UserId);
  
                          ITracingService tracingService = (ITracingService)serviceProvider.GetService(typeof(ITracingService));
  
                          //Get an image of the referenced entity and return a collection of the fields needed  in this case we are concerned with  the quote  id
                          Entity entityImage = service.Retrieve(QuoteDetailEntity.LogicalName, QuoteDetailEntity.Id, new ColumnSet(true));
  
                          Guid quoteDetailId = (Guid)entityImage.Attributes["quotedetailid"];
                          var prodLineNotes = entityImage.Attributes["vcs_productlinenotes"];
  
                          prodLineNotes = "Updated through plugin";
  
                          //throw new Exception("Prod Line Note was updated to  " + " " + prodLineNotes);
  
                          ////use the service to get all proposals related to the opportunity 
                          using (var crm = new MyServiceContext(service))
                          {
                              //var ent = crm.QuoteDetailSet.Where(q => q.QuoteDetailId == ownerGuid).ToList();
  
                              var ent = crm.QuoteDetailSet.Where(q => q.QuoteDetailId == quoteDetailId).ToList();
  
                              //throw new Exception("There is " + " " + ent.Count() + " " + "quotedetaildid is " + " " + quoteDetailId);
                              foreach (QuoteDetail qtd in ent)
                              {
                                  qtd.vcs_ProductLineNotes = prodLineNotes.ToString();
                              }
                              crm.SaveChanges();
                              //throw new Exception("Save Changes Passes ");// + " " + qtd.vcs_ProductLineNotes);
                          }
                      }
                      {
                          //throw new InvalidPluginExecutionException("Save Failed");
                      }
                  }
              }

  
  

  Tuesday, February 26, 2013 7:25 PM