Hello,
I would appreciate any help in finding why I get an error when saving back to a database. I am using vb.net in VS-2019 with sqlite. The error is: "Concurrency violation: the UpdateCommand affected 0 of the expected 1 records." I have worked out that the error only occurs when my table has a date field which I fill from the underlying database use a sqlitedatadapter as follows: Public connstring As String = "Data Source=c:\VS-2019\SaveTable\SaveTable\Data\TestDb.db" Public conn As New SQLiteConnection Public Sub FillMainTables() conn.ConnectionString = connstring conn.Open() DTAllCustomers.Rows.Clear() sql = "SELECT * FROM Customers" AllCustomersAdapter = New SQLiteDataAdapter(sql, conn) AllCustomersAdapter.Fill(DTAllCustomers) End Sub I then modify a few records in the datatable(DTAllCustomers) using this code: For i = 0 To DTAllCustomers.Rows.Count - 1 If DTAllCustomers.Rows(i).Item("sitecode") = "RESI" Then DTAllCustomers.Rows(i).Item("Email") = "Changed" End If Next I then try to save the modified table back to the underlying database with: Dim cbAllCustomers As New SQLiteCommandBuilder(AllCustomersAdapter) AllCustomersAdapter.UpdateCommand = cbAllCustomers.GetUpdateCommand Try AllCustomersAdapter.Update(DTAllCustomers) Catch ex As Exception MsgBox(ex.Message) End Try When I remove the DATETIME columns in DTAllCustomers the error disappears and the update completes correctly. Does SQLite change the date structure/value of the DateTime columns between filling the datatable and saving back to the datatable? I created the database using "sqlite expert personal". When I loop through the DTAllCustomers table I inspect the value of a date field and it appears as - #2/12/2020 12:00:00 AM# Any help is greatly appreciated as I have spent weeks trying to solve this through any number of forums. Brad _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users