[MSDOS]

طلع فيه تعديل أخير وهو الأفضل (المعذرة)

كود :

Public Class exDataGridView
    Inherits DataGridView

    Protected Overrides Function ProcessDialogKey(ByVal keyData As Keys) As Boolean
        Dim key As Keys = (keyData And Keys.KeyCode)
        If key = Keys.Enter Then
            If Me.CurrentCell.ColumnIndex = Me.Columns.Count - 1 Then
                Me.CurrentCell = Me.Item(0, Me.CurrentRow.Index)
                Return Me.ProcessDownKey(keyData)
            Else
                Return Me.ProcessRightKey(keyData)
            End If
        End If
        Return MyBase.ProcessDialogKey(keyData)
    End Function

    Protected Overrides Function ProcessDataGridViewKey(ByVal e As KeyEventArgs) As Boolean
        If e.KeyCode = Keys.Enter Then
            If Me.CurrentCell.ColumnIndex = Me.Columns.Count - 1 Then
                Me.CurrentCell = Me.Item(0, Me.CurrentRow.Index)
                Return Me.ProcessDownKey(e.KeyData)
            Else
                Return Me.ProcessRightKey(e.KeyData)
            End If
        End If
        Return MyBase.ProcessDataGridViewKey(e)
    End Function

End Class