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I have used google api http://code.google.com/intl/pt-BR/apis/visualization/documentation/gallery/columnchart_old.html to show 3d Bar chart to user but now I want to export that to pdf for that I need the image of that chart so can any one help me out in this?

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1 Answers

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IIRC, you send an URL to the Google Chart API and it returns you an image.

So basically you have to programmatically issue a WebRequest and store the returned image as an image file (or in memory).

To actually convert an image file (e.g. a PNG) to a PDF, please see this SO posting.