Use WebSupergoo ABCPdf.Net component

This component can easy render HTML code to PDF output:
For example, we want all content inside the Literal control "litReport" to output to PDF, first we render the Literal web control to a string writer, then use AddImageHtml method of ABCPdf to load the content.

using System.Text;
using System.IO;
using WebSupergoo.ABCpdf5;
......

StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
litReport.RenderControl(htw);

Doc theDoc = new Doc();
theDoc.Color.Color = System.Drawing.Color.White;
theDoc.Rect.Inset(20,20);
int theID = 0;
theDoc.FrameRect();
theID = theDoc.AddImageHtml(sw.ToString());
while (true)
{
theDoc.FrameRect(); // add a black border
if (!theDoc.Chainable(theID))
break;
theDoc.Page = theDoc.AddPage();
theID = theDoc.AddImageToChain(theID);
}

After this, we use GetData to get the raw data and use BinaryWrite to output to browser.

Response.ContentType = "application/pdf;";
Response.AppendHeader("content-disposition", "attachment; filename=\"file.pdf\"");
Response.BinaryWrite(theDoc.GetData());
Response.Flush();
Response.End();