This post explains how you can take screen shot of any webpage or convert a webpage into image using asp.net. In order to get the snapshot of a webpage, we need to instantiate an object of System.Windows.Forms.WebBrowser class and pass the url to its navigate method. Then we need to call the DrawToBitmap method of the webBrowser object to load the snapshot into a bitmap object.
Further, You can use graphics object to manipulate the image and save it in any format. [More]

This post explain how to merge multiple PDF files into a single pdf file using C#. The code given in the post make uses of an open source library PDFSharp written in C#. [More]

This post explain how to split a multipage PDF file into multiple single page pdf files using C#. The code given in the post make uses of an open source library PDFSharp written in C#. [More]