I'm now using EF 4.0，and I create a sample table named TableB,Table B‘s PK is (Id,YearMonth,Time),and column ClientId has been set as auto increased identity when I Add a new record , Exception occrued And the full callstack is

System.Data.Mapping.Update.Internal.UpdateTranslator.ValidateRowsAffected(Int64 rowsAffected, UpdateCommand source)

System.Data.Mapping.Update.Internal.UpdateTranslator.Update(IEntityStateManager stateManager, IEntityAdapter adapter)

System.Data.EntityClient.EntityAdapter.Update(IEntityStateManager entityCache)
System.Data.Objects.ObjectContext.SaveChanges(SaveOptions options)

System.Data.Objects.ObjectContext.SaveChanges()

However,if I set the CientId column not as a identity column，every thing works fine Can anyone tell me why this problem happens? thanks in advance

great woman ,wonderful ;)work

huh...form this post, i know that not all the US man are open-minded to sex.;P

with goole's add-in, the same functionality can realize....not only in firewok, also in IE.. nothing curious!!:zzz:

with sympathise!

use google code search..many you want

no standard is a good standard

:sigh: overtime work tomorrow....i'm a busy bee

i don't know ,anybody knows? give a link

Bradml wrote:

Open command prompt. Type: net user [username] * enter new password

i'd even not known this command, stupider i am

one is enough.two are wasteful

I've download and install...some examples attacthed is pretty cool:cool:

HOW MUCH ???

:omg: OMG,pitiful

Bradml wrote:

How about printing it out and then setting it on fire once he reads it??

;) the oldest way seems to be the most effective .

:zzz: i use neither of them

Clickok wrote:

But when I try, I always got some problem with viruses

:)

funny,pity that we don't celebrate Christmas in our country. i'm wonderring that getting Christmas presents is what a happy thing.:)