/// <summary>
/// Generate barcode
/// </summary>
/// <returns></returns>
public System.Drawing.Image Barcode(string order_numer = "", double scale = 1.1d)
{
if (string.IsNullOrEmpty(order_numer))
{
order_numer = Order.Order_Number;
}
int barcode_width = (int)(Code128Rendering.EstimateWidth(order_numer, 2, false) * scale);
System.Drawing.Image image = new System.Drawing.Bitmap(barcode_width, 70);
Graphics g = Graphics.FromImage(image);
g.Clear(Color.White);
System.Drawing.Font font = new System.Drawing.Font("Tahoma", 14, FontStyle.Bold);
StringFormat center_align = new StringFormat();
center_align.Alignment = StringAlignment.Center;
var y = Code128Rendering.MakeBarcodeImage(order_numer, 2, false, ref g, 1, barcode_width);
y += 3;
g.DrawString(Order.Order_Number, font, Brushes.Black, barcode_width / 2, y, center_align);
font.Dispose();
g.Dispose();
return(image);
}