During my Virtual Earth Workshop at the GIS-T (www.gis-t.org) conference, I demo'd how to execute a spatial query in a VE scenario by using JavaScript, WCF, and SQL Server 2008.  The query returned GeoRSS to the browser so the VE map control could use it to draw polygons on the map.  I ingested the spatial data into SQL from ESRI shape files provided by the US Census Bureau here using a free tool available here.  I'm planning on cleaning up the code, making the sample available, and recording a channel 9 screencast explaining the sample.   As a result of the demo, I received the following email from one of the attendees:

"I would like to know if you have a demo of how I could store the coordinates created by generating points or polylines from on the map into a database. You can save them as part of collections but I would like to know how they can be stored into a database."

I do not have such a sample.  However, Johannes Kebeck, has a sweet series of posts around Virtual Earth & SQL Server 2008:

Virtual Earth & SQL Server 2008 - Part 1: Introduction (1/2)

Virtual Earth & SQL Server 2008 - Part 1: Introduction (2/2)

Virtual Earth & SQL Server 2008 - Part 2: Spatial Data Management in SQL Server 2008 (1/3)

Virtual Earth & SQL Server 2008 - Part 2: Spatial Data Management in SQL Server 2008 (2/3)

Virtual Earth & SQL Server 2008 - Part 2: Spatial Data Management in SQL Server 2008 (3/3)

Virtual Earth & SQL Server 2008 - Part 3: Getting Started with Virtual Earth

Virtual Earth & SQL Server 2008 - Part 4: Integrating SQL Server 2008 and Virtual Earth (1/6)

Virtual Earth & SQL Server 2008 - Part 4: Integrating SQL Server 2008 and Virtual Earth (2/6)

Virtual Earth & SQL Server 2008 - Part 4: Integrating SQL Server 2008 and Virtual Earth (3/6)

Virtual Earth & SQL Server 2008 - Part 4: Integrating SQL Server 2008 and Virtual Earth (4/6)

Virtual Earth & SQL Server 2008 - Part 4: Integrating SQL Server 2008 and Virtual Earth (5/6)

Virtual Earth & SQL Server 2008 - Part 4: Integrating SQL Server 2008 and Virtual Earth (6/6)

Virtual Earth & SQL Server 2008 - Part 5: Conclusion

Part 4 (6/6) is titled Inserting Data into SQL Server 2008 and answers the question.  However, Johannes takes a slightly different approach than the pattern I showed in my demo.  I love the fact that he took a fairly platform agnostic approach in his examples because it means that anyone can use the approach regardless of their client & server libraries.  However, I'm a .NET evangelist.  It's my job to highlight our great developer platform.  We have some great libraries and APIs in the Microsoft AJAX Library / ASP.NET AJAX & the Windows Communication Foundation that could help make building out this scenario much easier.  I plan on taking the same scenario and building it out using them.  I'll be working on it, along with my original example, in the next week or so.  When I am done, I will make the source code available and have 2 screencasts walking showing how to build them step by step.

-Marc