Public ReadOnly Property Overwrite As Boolean

Dim instance As DragDropBlockEventArgs
Dim value As Boolean
 
value = instance.Overwrite

public bool Overwrite {get;}

private void fpSpread1_DragDropBlock(object sender, FarPoint.Win.Spread.DragDropBlockEventArgs e)
{
    if (e.Overwrite == true)
    {
        e.Cancel = true;
    }
}

Private Sub FpSpread1_DragDropBlock(ByVal sender As Object, ByVal e As FarPoint.Win.Spread.DragDropBlockEventArgs) Handles
FpSpread1.DragDropBlock
    If e.Overwrite = True Then
        e.Cancel = True
    End If
End Sub