Software Siglo XXI

Example 18: Realtime PDF export from a web application

This example illustrates how to create PDF file with a nice chart on the fly a web browser. No temporary files are involved.

Hint: this is a great and easy way to print your charts !!

Steps:

1. Create a new ASP.NET application project (C#)

2. Add a reference to Super 2d/3d Graph Library and to System.Windows.Forms (this one is necessary for the library to operate on web environments)

3. Insert the following code in the Page_Load event.

4. Run!

   Super2d3dGraphLibrary.Super2d3dGraph oGraph = new Super2d3dGraphLibrary.Super2d3dGraph();
   oGraph.LicenseeIdentifier = "PROF";

   // Create a quick and random sample chart
   oGraph.SampleChart();

   // Increase resolution of chart (great for printing!)
   oGraph.Resolution = 150;

   // Paint the chart
   oGraph.RefreshChart();

   // Output the chart to the browser
   Response.Clear();
   Response.ContentType = "Application/pdf";
   byte[] pdf = oGraph.CreatePDF(Super2d3dGraphLibrary.STYLE_ORIENTATION.ORIENTATION_LANDSCAPE, 75, true);
   Response.OutputStream.Write(pdf, 0, pdf.Length);