c# - How to Implement concurrency in NHibernate -

i have 2 person , persondto classes , i'm using nhibernate save these objects. while have 1 user there no problem , user going update object user updating it. both of can update same object , because updated user, on of changes lost.

in order implement cuncurrency used 2 ways both of them faced problem.

• the first solution : use person constructor update object
• the second approach : using getbyid method

the first approach working great problem unfortunately don't have enough permition load person completetly dependencies. have use second approach.

in second approach when set (update) version o last second, nhibernate using old version changes won't apply.

look @ following code

load person id

person = locator.personrepository.getbyid(dto.id); 

version field loaded new value. need set persondto object

person.version = dto.version 

during update process nhibernate passes old value sql , don't face concurreny error.

what should implement concurrency in way. appriciated.

as understand problem, guess have field getter works fine when trying set face problem, if so, check following considerations

• check if version field not readonly
• check if has public setter not private one
• check if have needed properties in mapper
• check happening in person constructor not raise when use getbyid method

provide more information if these ideas didn't you