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Save record to database when moving row in datagrid

arcross asked
Medium Priority
Last Modified: 2010-04-23
Ive got a datagrid bound to a datable. The way im saving the data to database is through a 'save button'. But the users want the record to be saved automatically when they  move to another row or they add a new row without them to have to take action.

I was thinking, to check the state of a row everytime they scroll though the rows, and if that row has changes then, save it. BUt im not sure which is the best way to do this.

Any ideas would be helpful!


Watch Question

You could use the .CellChanged event of the DataGrid itself to check if the Row has changed and, if it has, then check to see if your DataSet .HasChanges and then, if it has, save the changes.  That would be on these lines

    Private Sub DataGrid1_CurrentCellChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DataGrid1.CurrentCellChanged
        Static PreviousRow As Integer = -1
        Dim ThisRow As Integer
        ThisRow = DataGrid1.CurrentCell.RowNumber
        If ThisRow <> PreviousRow Then
            If DataSet.HasChanges Then
            End If
        End If
        PreviousRow = ThisRow
    End Sub

Alternatively you could declare a CurrencyManager WithEvents, or add an event handler, and use its .PositionChanged event similarly, but without having to record the previous row's number with this row's number, as the event will only fire when the row changes.  On these lines

    Private Sub cm_PositionChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles cm.PositionChanged
        If DataSet.HasChanges Then
        End If
    End Sub


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cheers sancler!
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