UPdate Plugin Pre Operation

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  Hi,

  I am trying to write a plugin on my own. I am fairly new to crm.

  This plugin is to update a lookup field before the record status reason changes. So I registered it on Update message Pre Operation event. But I don't think it is doing anything it has to do! Here is my code, please let me know the mistakes I've done and I will be happy to learn from my mistakes. Thanks

  protected void ExecutePreTaskUpdate(LocalPluginContext localContext)
          {
              if (localContext == null)
              {
                  throw new ArgumentNullException("localContext");
              }
  
              // TODO: Implement your custom Plug-in business logic.
              IPluginExecutionContext context = localContext.PluginExecutionContext;
              IOrganizationService service = localContext.OrganizationService;
  
              if (context.InputParameters.Contains("Target") && context.InputParameters["Target"] is Entity)
              {
  
                  //create entity context
                  Entity entity = (Entity)context.InputParameters["Target"];
  
                  if (entity.LogicalName != "task")
  
                      return;
  
                  try
                  {
                      if (entity.Contains("new_taskissuephase"))
                      {
                          OptionSetValue taskStateCode = entity.GetAttributeValue<OptionSetValue>("statecode");
  
                          QueryExpression query = new QueryExpression
                          {
                              EntityName = "new_taskissuephase",
                              Criteria =
                              {
                                  Conditions =
                                  {
                                      new ConditionExpression("new_taskissuephase",ConditionOperator.Equal,"Tech Work Complete")
                                  }
                              }
                          };
  
                          EntityCollection resultsCollection = localContext.OrganizationService.RetrieveMultiple(query);
                          foreach (Entity result in resultsCollection.Entities)
                          {
                              result.Attributes["activityid"] = new EntityReference(entity.LogicalName, entity.Id);
                          }
   }
                  }
                  catch (Exception ex)
                  {
                      throw new InvalidPluginExecutionException(ex.Message);
                  }
              }
  }
  
  

  
  

  Friday, December 5, 2014 4:16 PM