Impersonates a user (usually an admin account) to perform operations that would otherwise fail due to a lack of permissions (such as opening a file from a remote drive, opening a digital certificate from a store, etc.)

An auxiliary method which loads a text string from a file specified by Path. A file can be in ANSI or Unicode (little endian, big endian or UTF-8) formats.

All text-handling method such as PdfCanvas.DrawText expect a text string to be passed as an argument. If the text to be drawn resides in a file, the LoadTextFromFile method can be used to load the file into a text string which can them be passed to a text-drawing method.

Sends an arbitrary file specified via Path from the server's hard drive to the client browser. This method can only be used under ASP.NET.

A script calling this method must not have any HTML tags in it (not even comments) as they would corrupt the HTTP stream.

ContentType optionally specifies the Content-Type header for the HTTP stream. This argument is "application/pdf" by default.

DispHeader optionally specifies the Content-Disposition header for the HTTP stream. By default, the header is set to "attachment; filename=filename.ext" based on the name of the file being sent. You may choose to pass a value for this argument if you want to specify a filename other than the actual document name.

Usage:

objPDF.SendBinary( @"c:\path\a.pdf", null, "attachment; filename=b.pdf" );