Printing BarCodes in Silverlight

19. January 2012 10:32 by Mrojas in Silverlight  //  Tags: , , , ,   //   Comments (0)

Well I tought this was gonna be more difficult, but no. The Silverlight community is great and there are tons of
of  code out there.

So I found a great project in codeplex called obviously http://silverlightbarcode.codeplex.com/

And printing barcode with that library is a peace of cake.

Just do something like this:

 

private void button1_Click(object sender, RoutedEventArgs e)
{
    var p = new PrintDocument();
    p.PrintPage += new EventHandler<PrintPageEventArgs>(p_PrintPage);
    p.Print("NuevoDocument");
}

void p_PrintPage(object sender, PrintPageEventArgs e)
{
    Canvas canvasBarCode = new Canvas();
    canvasBarCode.Width = 200;
    canvasBarCode.Height = 200;
    Me.BarcodeSoftware.Barcode.Barcodes barcode = 
           new Me.BarcodeSoftware.Barcode.Barcodes();
    barcode.BarcodeType =        
                  Me.BarcodeSoftware.Barcode.Barcodes.BarcodeEnum.Code39;
    barcode.Data = "123456";
    barcode.encode();
    string encodedData = barcode.EncodedData;
    //if you want to put the barcode number 
        // add a label to canvas and set text to barcode.HumanText;

    int encodedLength = 0;
    for (int x = 0; x < encodedData.Length; x++)
    {
        if (encodedData[x] == 't')
            encodedLength++;
        else if (encodedData[x] == 'w')
            encodedLength = encodedLength + 3;
    }

    float barWidth = (float)(canvasBarCode.Width / encodedLength);

    if (barWidth < 1) barWidth = 1;
    float thickWidth = barWidth * 3;
    double incrementWidth = 0;

    int swing = 0;
    for (int x = 0; x < encodedData.Length; x++)
    {
        Brush brush;
        if (swing == 0)
            brush = new SolidColorBrush(Colors.Black);
        else
            brush = new SolidColorBrush(Colors.White);

        if (encodedData[x] == 't')
        {
            Rectangle r = new Rectangle();
            r.Fill = brush;
            r.Width = barWidth;
            r.Height = canvasBarCode.Height;
            r.SetValue(Canvas.LeftProperty, incrementWidth);
            r.SetValue(Canvas.TopProperty, 0.0);
            canvasBarCode.Children.Add(r);
            incrementWidth = incrementWidth + ((barWidth));
        }
        else if (encodedData[x] == 'w')
        {
            Rectangle r = new Rectangle();
            r.Fill = brush;
            r.Width = 3 * barWidth;
            r.Height = canvasBarCode.Height;
            r.SetValue(Canvas.LeftProperty, incrementWidth);
            r.SetValue(Canvas.TopProperty, 0.0);
            canvasBarCode.Children.Add(r);
            incrementWidth = incrementWidth + (3 * (barWidth));
        }

        if (swing == 0)
           swing = 1;
        else
           swing = 0;
    }
    e.PageVisual = canvasBarCode;
    e.HasMorePages = false;

}