<Button x:Name="PowrotBtn" HorizontalAlignment="Left" Margin="733,0,0,0" VerticalAlignment="Top" Width="57" Height="47" Click="PowrotBtn_Click" BorderBrush="{x:Null}">
            <Button.Background>
                <ImageBrush ImageSource="/GOT_PTTK;component/Images/back-arrow.png" Stretch="Uniform"/>
            </Button.Background>
        </Button>