public static ModificationResult Delete <T>(this Session session, CriteriaOperator criteria) where T : IXPObject
{
if (ReferenceEquals(criteria, null))
{
criteria = CriteriaOperator.Parse("True");
}
XPClassInfo classInfo = session.GetClassInfo(typeof(T));
/// if you are using DevExpress 11.2 or earlier
/// var batchWideData = new BatchWideDataHolder(session);
var batchWideData = new BatchWideDataHolder4Modification(session);
int recordsAffected = (int)session.Evaluate <T>(CriteriaOperator.Parse("Count()"), criteria);
/// if you are using DevExpress 13.1.5 or earlier
/// List<ModificationStatement> collection = DeleteQueryGenerator.GenerateDelete(classInfo, criteria, batchWideData);
List <ModificationStatement> collection = DeleteQueryGenerator.GenerateDelete(classInfo, ObjectGeneratorCriteriaSet.GetCommonCriteriaSet(criteria), batchWideData);
foreach (ModificationStatement item in collection)
{
item.RecordsAffected = recordsAffected;
}
ModificationStatement[] collectionToArray = collection.ToArray <ModificationStatement>();
ModificationResult result = session.DataLayer.ModifyData(collectionToArray);
return(result);
}
