Concurrency violation: the UpdateCommand affected 0 of the expected 1 records.

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Hi,
I am trying to Edit record in my database.

My cod is:

Dim drActivate As DataRow
     drActivate = DsLicense.tblLicense.Rows(0)
     drActivate.BeginEdit()
     drActivate("ActivationDate") = Today.Date 'Activation date
     drActivate("Activated") = "Yes" 'Application activated
     drActivate("Key") = UCase(vrFinalKey)
     drActivate.EndEdit()
     taLicense.Update(DsLicense.tblLicense)

It works fine when the third item is not added (vrFinalKey). Error is
Concurrency violation: the UpdateCommand affected 0 of the expected 1 records.

Please note there is one record at the time of editing. Also Key field exists there, no issue about it.

Please advise how to fix.
Thanks

Posted 5-Jul-11 23:54pm

Furqan Sehgal

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Furqan Sehgal · Answer 1 · 2011-07-06T04:38:00

Solution 2

I found the solution somewhere............
need to clear datatable before filling

DsLicense.tblLicense.clear()
me.taLicense.fill(DsLicense.tblLicense)

Posted 6-Jul-11 4:38am

Furqan Sehgal

phil.o · Answer 2 · 2011-07-06T01:55:00

Solution 1

Concurrency violation : could it be that the Key field is configured as Unique (no duplicates) and you try to add an existing value ?

Posted 6-Jul-11 1:55am

phil.o