Public ReadOnly Property CurrentColumn As Integer

Dim instance As SelectionChangingEventArgs
Dim value As Integer
 
value = instance.CurrentColumn

public int CurrentColumn {get;}

private void fpSpread1SelectionChanging(object sender, FarPoint.Win.Spread.SelectionChangingEventArgs e) 
{
    if (e.CurrentColumn == 0)
    {
        e.Cancel = true;
    }
}

Private Sub FpSpread1SelectionChanging(ByVal sender As Object, ByVal e As FarPoint.Win.Spread.SelectionChangingEventArgs)
Handles FpSpread1.SelectionChanging
    If e.CurrentColumn = 0 Then
        e.Cancel = True
    End If
End Sub