CS1061 'IPluginExContext' could be found (are you missing a using directive or an assembly reference?ecutionContext' does not contain a definition for 'OrganizationService' and no accessible extension method 'OrganizationService' accepting a first argument of type 'IPluginExecution

 CS1061 'IPluginExContext' could be found (are you missing a using directive or an assembly reference?ecutionContext' does not contain a definition for 'OrganizationService' and no accessible extension method 'OrganizationService' accepting a first argument of type 'IPluginExecution

Resolution:

It seems there's an issue with accessing the `OrganizationService` property in the `IPluginExecutionContext` interface. This could be due to the incorrect type being used or a missing assembly reference. To resolve this issue, make sure you are using the correct type for the `IPluginExecutionContext` interface, and ensure that the necessary assemblies are referenced in your project. Additionally, ensure that the plugin class implements the `IPlugin` interface correctly. Here's a corrected version of the method with the assumption that you are using the correct `IPluginExecutionContext` interface: ```csharp using Microsoft.Xrm.Sdk; using Microsoft.Xrm.Sdk.Query; using System; public class MeetingValidationPlugin : IPlugin { public void Execute(IServiceProvider serviceProvider) { // Obtain the execution context from the service provider. IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext)); // Check if the plugin is triggered by a create or update operation on the Meeting entity. if (context.MessageName.ToLower() == "create" || context.MessageName.ToLower() == "update") { // Check if the target entity contains data. if (context.InputParameters.Contains("Target") && context.InputParameters["Target"] is Entity) { // Retrieve the target entity from the context. Entity targetEntity = (Entity)context.InputParameters["Target"]; // Check if the target entity is of type 'Meeting'. if (targetEntity.LogicalName.ToLower() == "meeting") { // Check if the Meeting record meets the specified conditions. if (!IsMeetingAssociatedWithEvaluationRequirement(targetEntity, context)) { throw new InvalidPluginExecutionException("A Meeting with the type of Service Provider Performance Evaluation and Status = Completed must be associated to the Evaluation Requirement."); } } } } } private bool IsMeetingAssociatedWithEvaluationRequirement(Entity meetingEntity, IPluginExecutionContext context) { // Retrieve the organization service from the service provider. IOrganizationServiceFactory serviceFactory = (IOrganizationServiceFactory)context.GetService(typeof(IOrganizationServiceFactory)); IOrganizationService service = serviceFactory.CreateOrganizationService(context.UserId); // Retrieve the related Evaluation Requirement records associated with the Meeting. QueryExpression query = new QueryExpression("evaluationrequirement_meeting"); query.Criteria.AddCondition("meetingid", ConditionOperator.Equal, meetingEntity.Id); // Filter by Meeting Type and Status = Completed query.AddLink("meeting", "meetingid", "meetingid").LinkCriteria.AddCondition("type", ConditionOperator.Equal, (int)MeetingType.ServiceProviderPerformanceEvaluation); query.AddLink("meeting", "meetingid", "meetingid").LinkCriteria.AddCondition("statuscode", ConditionOperator.Equal, (int)MeetingStatus.Completed); EntityCollection relatedEvaluationRequirements = service.RetrieveMultiple(query); // Return true if at least one related Evaluation Requirement record is found, indicating association. return relatedEvaluationRequirements.Entities.Count > 0; } // Enum for Meeting Type public enum MeetingType { ServiceProviderPerformanceEvaluation = 123456789 // Update with the actual OptionSet value for the Meeting Type } // Enum for Meeting Status public enum MeetingStatus { Completed = 2 // Update with the actual OptionSet value for the Meeting Status } } ``` In this version, we obtain the organization service using `IOrganizationServiceFactory` and `CreateOrganizationService` method from the `IPluginExecutionContext` interface. Then, we use this service to execute the query and retrieve related Evaluation Requirement records associated with the Meeting. Make sure to adjust the enum values with the actual OptionSet values for Meeting Type and Status in your Dynamics CE environment.