ByteScout PDF Suite – C# – Draw with transparency in pdf with pdf sdk

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ByteScout PDF Suite – C# – Draw with transparency in pdf with pdf sdk

printable version:
ByteScout-PDF-Suite-C-sharp-Draw-with-transparency-in-pdf-with-pdf-sdk.pdf

How to draw with transparency in pdf with pdf sdk in C# using ByteScout PDF Suite

Step-by-step tutorial on how to draw with transparency in pdf with pdf sdk in C#

Quickly learn how to draw with transparency in pdf with pdf sdk in C# with this sample source code. ByteScout PDF Suite is the bundle that provides six different SDK libraries to work with PDF from generating rich PDF reports to extracting data from PDF documents and converting them to HTML. This bundle includes PDF (Generator) SDK, PDF Renderer SDK, PDF Extractor SDK, PDF to HTML SDK, PDF Viewer SDK and PDF Generator SDK for Javascript and you can use it to draw with transparency in pdf with pdf sdk with C#.

The following code snippet for ByteScout PDF Suite works best when you need to quickly draw with transparency in pdf with pdf sdk in your C# application. Just copy and paste the code into your C# application’s code and follow the instructions. If you want to use these C# sample examples in one or many applications then they can be used easily.

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Program.cs

      using System.Diagnostics;
using Bytescout.PDF;

namespace Transparency
{
    /// <summary>
    /// This example demonstrates how to draw transparent objects.
    /// </summary>
    class Program
    {
        static void Main()
        {
            // Create new document
            Document pdfDocument = new Document();
            pdfDocument.RegistrationName = "demo";
            pdfDocument.RegistrationKey = "demo";
            // Add page
            Page page = new Page(PaperFormat.A4);
            pdfDocument.Pages.Add(page);

            Canvas canvas = page.Canvas;

            // Prepare pens and brushes
            Pen borderPen = new SolidPen(new ColorRGB(0, 0, 0), 2f);
            
            SolidBrush brush1 = new SolidBrush(new ColorRGB(255, 0, 0));
            SolidBrush brush2 = new SolidBrush(new ColorRGB(0, 0, 255));
            
            borderPen.Opacity = 50;
            brush1.Opacity = 30;
            brush2.Opacity = 60;

            // Draw normal rectangles
            canvas.DrawRectangle(brush1, 100, 100, 100, 100);
            canvas.DrawRectangle(borderPen, brush2, 150, 150, 100, 100);

            borderPen.Opacity = 80;
            brush1.Opacity = 60;
            brush2.Opacity = 30;

            // Draw rounded rectangles
            canvas.DrawRoundedRectangle(brush1, 220, 100, 100, 100, 10);
            canvas.DrawRoundedRectangle(borderPen, brush2, 270, 150, 100, 100, 10);
            
            // Save document to file
            pdfDocument.Save("result.pdf");

            // Cleanup 
            pdfDocument.Dispose();

            // Open result document in default associated application (for demo purpose)
            ProcessStartInfo processStartInfo = new ProcessStartInfo("result.pdf");
            processStartInfo.UseShellExecute = true;
            Process.Start(processStartInfo);
        }
    }
}