ASP.NET and GDI+
(May 19, 2005)
So you want to know how to generate an image with an ASP page on the fly? Well there is a few ways to do it, such as flash etc, but with Microsoft and GDI+ the task is made a lot easier. This tutorial just covers the basics, but from it you can always move on and experiment with GDI+ (and intellisense)
Well, lets start with the calling page
default.aspx (or whatever you would like to call it):
ASP.NET Image Manipulation and Zoom
(April 29, 2005)
This example requires two ASP.Net pages: Zoom.aspx and ZoomProcessor.aspx. ZoomProcessor is used to do the actual image processing. The output of that page is not html, but an image. That page will be the source for the image on Zoom.aspx, which will be used to hold the buttons to control zooming and panning and display the image. View the inline comments for specific code functionality and detail.
You'll notice that it takes just a bit longer for the image to be created than the rest of the page. This is expected as the image is created dynamically by the server. If we were to place the image in a smaller window with no html below or to the right of it, this would be less noticeable.
This article, by Willem Van Rooyen, is from ASPToday (www.asptoday.com)
When a graph is drawn, the focus is kept on the actual underlying competing figures that constitute the graph. Sometimes it is difficult to make assumptions just by looking at these graphs. When looking at a geographical map of data you immediately see exactly where things are happening. This article presents a .NET geographical mapping solution that will illustrate a fairly simple way of implementing these maps.