Dynamics Community Forum Thread Details

When we update any field(suppose company phone no) in parent entity. the old and new values should be stored in newly created record in child entity(old values and new values)

I have written a code in post syn operation on update. and used post and pre entity image but i am getting exception "the given key was not present in the dictionary" . By debugging I noticed it is not able to read post image value .How can i fix this issue. please guide

Below is my code

using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Messages;
using Microsoft.Xrm.Sdk.Metadata;
using Microsoft.Xrm.Sdk.Query;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Part2No9
{
    public class UpdateTrackCustomer : IPlugin

    {
        public void Execute(IServiceProvider serviceProvider)
        {
            try
            {

                ITracingService tracingService =
                             (ITracingService)serviceProvider.GetService(typeof(ITracingService));

                // Obtain the execution context from the service provider.  
                IPluginExecutionContext context = (IPluginExecutionContext)
                    serviceProvider.GetService(typeof(IPluginExecutionContext));

                IOrganizationServiceFactory serviceFactory =
             (IOrganizationServiceFactory)serviceProvider.GetService(typeof(IOrganizationServiceFactory));
                IOrganizationService service = serviceFactory.CreateOrganizationService(context.UserId);



                if (context.MessageName != "Update")//plugin shouldnt trigger any of event
                    return;

                // The InputParameters collection contains all the data passed in the message request.  
                if (context.InputParameters.Contains("Target") &&
                    context.InputParameters["Target"] is Entity)
                {
                    Entity customer9 = (Entity)context.InputParameters["Target"];

                    //entity check
                    if (customer9.LogicalName != "orc_customer9")
                    {
                        return;
                    }
                    if (customer9.Contains("orc_companyphone") && customer9.Attributes["orc_companyphone"] != null)
                    {
                        string oldphonevalue = string.Empty;
                        string newphonevalue = string.Empty;
                        string phoneno = string.Empty;
                        RetrieveAttributeRequest retrieveAttributeRequest = new RetrieveAttributeRequest
                        {
                            EntityLogicalName = "orc_customer9",
                            LogicalName = "orc_companyphone",
                            RetrieveAsIfPublished = true
                        };
                        RetrieveAttributeResponse retrieveAttributeResponse = (RetrieveAttributeResponse)service.Execute(retrieveAttributeRequest);
                        AttributeMetadata retrievedAttributeMetadata = retrieveAttributeResponse.AttributeMetadata;
                        phoneno = retrievedAttributeMetadata.DisplayName.UserLocalizedLabel.Label;


                        if (context.PreEntityImages.Contains("LeadTopicImage") && context.PreEntityImages["LeadTopicImage"] is Entity)
                        {

                            Entity preMessageImage = (Entity)context.PreEntityImages["LeadTopicImage"];

                            oldphonevalue = (string)preMessageImage.Attributes["orc_companyphone"];

                        }

                        if (context.PostEntityImages.Contains("LeadTopicImage") && context.PostEntityImages["LeadTopicImage"] is Entity)
                        {

                            Entity postMessageImage = (Entity)context.PostEntityImages["LeadTopicImage"];


                            newphonevalue = (string)postMessageImage.Attributes["orc_companyphone"];

                        }

                        if (context.Depth > 2)
                            service.Update(customer9);

                        if (newphonevalue != oldphonevalue)
                        {

                            Entity c = new Entity("orc_trackcustomer");
                            c.Attributes["orc_name"] = customer9.Attributes["orc_name"];

                            c.Attributes["orc_modifiedfield"] = phoneno;
                            
                                c.Attributes["orc_oldvalue"] = oldphonevalue;
                            
                                //c.Attributes["orc_newvalue"] = newphonevalue;
                            
                            c.Attributes["orc_trackcustomerlookup"] = new EntityReference("orc_customer9", customer9.Id);
                            service.Create(c);
                        }
                    }
                }


            }


            catch (Exception e)
            {
                throw new InvalidPluginExecutionException(e.Message);
            }
        }
    }
}

Thanks