public void DeleteAll(string entityType)
        {
            var query = new QueryExpression(entityType);
            var items = XrmService.RetrieveAll(query);

            XrmService.DeleteMultiple(items);
        }
 public void DeleteRecentData()
 {
     foreach (var entityType in EntitiesToDelete)
     {
         var query = new QueryExpression(entityType);
         query.Criteria.AddCondition("createdon", ConditionOperator.GreaterThan, DateTime.Now.AddMinutes(-30));
         var items = XrmService.RetrieveAll(query);
         XrmService.DeleteMultiple(items);
     }
 }