Retrieve CRM Form Metadata Xml

The below method helps us to retrieve the FormXml of a CRM Entity

        private string GetFormXml(string websiteName, string entityName, IOrganizationService service)
        {
            string formXml = "";

            try
            {
                RetrieveEntityRequest mdRequest = new RetrieveEntityRequest()
                {
                    EntityFilters = EntityFilters.Attributes,
                    LogicalName = entityName,
                    RetrieveAsIfPublished = true
                };
                // Execute the request
                RetrieveEntityResponse entityResponse = (RetrieveEntityResponse)service.Execute(mdRequest);
                //EntityMetadata entityData = entityResponse.EntityMetadata;y

                var entityTypeCode = entityResponse.EntityMetadata.ObjectTypeCode.Value;

                QueryExpression query = new QueryExpression("systemform");
                query.ColumnSet = new ColumnSet("formxml");
                query.Criteria.AddCondition(new ConditionExpression("name", ConditionOperator.Equal, websiteName));
                query.Criteria.AddCondition(new ConditionExpression("objecttypecode", ConditionOperator.Equal, entityTypeCode));

                RetrieveMultipleRequest retrieveRequest = new RetrieveMultipleRequest();
                retrieveRequest.Query = query;

                var results = (RetrieveMultipleResponse)service.Execute(retrieveRequest);
                formXml = results.EntityCollection.Entities[0].Attributes["formxml"].ToString();

                return formXml;

            }            
            catch (FaultException ex)
            {
                throw new FaultException("Error occured while instantiating the CRM Service " + ex.ToString());
            }
            
        }