c# - Bindingsource is not suspending binding -

i have form displays custom details, 1 section being list of bank accounts associated customer. list bound it's own bindingsource, when loading customer do:

bscustomer.datasource = customer; bscustomeraccounts.datasource = customer.accounts; 

i have objectlistview bound bscustomeraccounts. far works fine.

to edit particular account, double-click on , open separate form:

using (var form = new customeraccountform(selectedaccount)) {     dialogresult result = form.showdialog(this);     if (result == dialogresult.ok)     {         selectedaccount= form.account;     } } 

the problem when user clicks on cancel cancel editing of account in form. original bccustomeraccounts , therefore list still being updated.

i've tried suspendbinding , raiselistchangedevents = false bindingsource still being updated.

am missing something?

it seems surprising @ first, think while didn't assign edited object list, why list item edited?

the key point here: classes reference type.

you passed selected account edit form , since it's class , classes reference type, in fact editing same instance in list. when edit properties, edits directly applying object regardless of clicking ok or cancel.