Sample Code to Cancel All the Open Activities for a particular record in CRM 2011.

Hi,

Just sharing a sample code that could be used to cancel all the open activities for a particular record.

 private void CancelChildActivities(Guid entityRecordGuid, IOrganizationService service)
 {
 QueryExpression qe = new QueryExpression();
 qe.ColumnSet = new ColumnSet(new string[] { "activityid", "activitytypecode" });
 qe.EntityName = "activitypointer";

FilterExpression filterStateCode = new FilterExpression();
 filterStateCode.FilterOperator = LogicalOperator.Or;
 filterStateCode.AddCondition("statecode", ConditionOperator.Equal, "Open");
 filterStateCode.AddCondition("statecode", ConditionOperator.Equal, "Scheduled");

FilterExpression filter = new FilterExpression();
 filter.FilterOperator = LogicalOperator.And;
 filter.AddCondition("regardingobjectid", ConditionOperator.Equal, entityRecordGuid);
 filter.AddFilter(filterStateCode);

qe.Criteria = filter;

RetrieveMultipleRequest request = new RetrieveMultipleRequest();
 request.Query = qe;
 RetrieveMultipleResponse response = (RetrieveMultipleResponse)service.Execute(request);

foreach (Entity activity in response.EntityCollection.Entities)
 {
 CancelActivity(activity, service);
 }

}

 private void CancelActivity(Entity entity, IOrganizationService service)
 {
 EntityReference moniker = new EntityReference();

if (entity.LogicalName == "activitypointer")
 {
 if (entity.Attributes.Contains("activityid") & entity.Attributes.Contains("activitytypecode"))
 {
 moniker.LogicalName = entity.Attributes["activitytypecode"].ToString();
 moniker.Id = (Guid)entity.Attributes["activityid"];

SetStateRequest request = new SetStateRequest();
 request.EntityMoniker = moniker;
 request.State = new OptionSetValue(2);
 request.Status = new OptionSetValue(-1);
 SetStateResponse response = (SetStateResponse)service.Execute(request);
 }
 }

}

Bye.