Problem When Using Pre/Post Entity Images In Plugin

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  Hi,

  I'm running Dynamics CRM Online 2015 and I'm trying to create a plugin that runs on Update of my custom entity (grm_contract.)

  My code is failing with the message "Unexpected exception from plug-in (Execute): GRMPlugins.OnContractUpdate: System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary."

  It stops at the trace "Getting image entity from PostEntityImages."

  I'm running the plugin on update of grm_contract as a post operation (synchronous.)

  using System;
  using System.ServiceModel;
  using System.Runtime.Serialization;
  using Microsoft.Xrm.Sdk;
  
  namespace GRMPlugins
  {
      public class OnContractUpdate : IPlugin
      {
  
          public void Execute(IServiceProvider serviceProvider)
          {
  
              //Extract the tracing service for use in debugging sandboxed plug-ins.
              ITracingService tracingService =
                  (ITracingService)serviceProvider.GetService(typeof(ITracingService));
  
              // Obtain the execution context from the service provider.
              IPluginExecutionContext context = (IPluginExecutionContext)
                  serviceProvider.GetService(typeof(IPluginExecutionContext));
  
              // Get a reference to the Organization service.
              IOrganizationServiceFactory serviceFactory = (IOrganizationServiceFactory)serviceProvider.GetService(typeof(IOrganizationServiceFactory));
              IOrganizationService service = serviceFactory.CreateOrganizationService(context.UserId);
  
              if (context.InputParameters.Contains("Target") &&
                  context.InputParameters["Target"] is Entity)
              {
  
                  // Obtain the target entity from the Input Parameters.
                  tracingService.Trace
                      ("GRMContractPlugin: Getting the target entity from Input Parameters.");
                  Entity entity = (Entity)context.InputParameters["Target"];
  
                  // Obtain the image entity from the Post Entity Images.
                  tracingService.Trace
                      ("GRMContractPlugin: Getting image entity from PostEntityImages.");
                  Entity image = (Entity)context.PostEntityImages["Target"];
  
                  // Verify that the target entity represents a grm_contract.
                  // If not, this plug-in was not registered correctly.
                  tracingService.Trace
                      ("GRMContractPlugin: Verifying that the target entity represents a grm_contract.");
                  if (entity.LogicalName != "grm_contract")
                      return;
  
                  // Calculate and set grm_contract_end_date if grm_contractperiodvalue, grm_contractperiodunit and grm_contract_start_date ALL exist.
                  if (image.Attributes.Contains("grm_contractperiodvalue") && image.Attributes.Contains("grm_contractperiodunit") && image.Attributes.Contains("grm_contract_start_date"))
                  {
  
                      int contract_period_value = ((int)image.Attributes["grm_contractperiodvalue"]); // Contract period value (numeric) as integer (again)
                      int contract_period_unit_int = ((OptionSetValue)image["grm_contractperiodunit"]).Value; // Get contract period unit as integer so we can use if statements below.
                      DateTime contract_start_date = (DateTime)image.Attributes["grm_contract_start_date"];
  
                      // If grm_contractperiodunit is set to 172300000 (Day)
                      if (contract_period_unit_int == 172300000)
                      {
                          int days_to_add = contract_period_value;
                          DateTime contract_end_date = (DateTime)contract_start_date.AddDays(days_to_add);
                          entity.Attributes.Add("grm_contract_end_date", (DateTime)contract_end_date);
                      }
  
                      // If grm_contractperiodunit is set to 172300001 (Week)
                      if (contract_period_unit_int == 172300001)
                      {
                          int days_to_add = contract_period_value;
                          DateTime contract_end_date = (DateTime)contract_start_date.AddDays(days_to_add * 7); // Have to multiply the days by 7 as there is no AddWeeks function here.
                          entity.Attributes.Add("grm_contract_end_date", (DateTime)contract_end_date);
                      }
  
                      // If grm_contractperiodunit is set to 172300002 (Month)
                      if (contract_period_unit_int == 172300002)
                      {
                          int months_to_add = contract_period_value;
                          DateTime contract_end_date = (DateTime)contract_start_date.AddMonths(months_to_add);
                          entity.Attributes.Add("grm_contract_end_date", (DateTime)contract_end_date);
  
                      }
  
                      // If grm_contractperiodunit is set to 172300003 (Year)
                      if (contract_period_unit_int == 172300003)
                      {
                          int years_to_add = contract_period_value;
                          DateTime contract_end_date = (DateTime)contract_start_date.AddYears(years_to_add);
                          entity.Attributes.Add("grm_contract_end_date", (DateTime)contract_end_date);
                      }
  
                  }
  
              }
  
          }
      }
  
  }
  

  
  

  
  

  I think the real cause of this problem is the little knowledge I have of how plugins work in Dynamics CRM. If somebody could take a look at my code and identify any areas that don't make sense and could be causing the issue, that would be great.

  Thanks,

  James

  Thursday, October 15, 2015 11:53 AM