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Rendering Polygons from SQL Server 2008 on Virtual Earth

15 minutes, 54 seconds


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Marc Schweigert builds off of the concepts shown in his previous screencast and shows you how to render a polygon on a Virtual Earth map using REST, Windows Communication Foundation (WCF), LINQ to SQL, and the new geography data type in SQL Server 2008.

To learn more about the GeoRSS utility library, visit:

A big thanks to Eugenio Pace for letting me use it as part of my sample!

To download the source code visit:


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  • insanely complicated.  Microsoft will hopefully address a simpler method for drawing polygons from SQL, in future releases of the VE control.  Why not just make the Geography object readable by the .Net framework for use in VE?

  • Love the capability.  What kind of effort is it to change ap from  WCF to web ? any guidance on this? Appreciate any help.
  • can you format polygons (ex. line width, line colour, back colour) through georss?

  • Now, I'm studying Web GIS. What can I use this to learn a Web GIS? with the emergence of New Gadgets, technology is becoming more sophisticated.

  • ohridohrid

    Ohrid and reizen

  • sswfnhtusswfnhtu


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