How to solve "There is already an open DataReader associated with this Command which must be closed first"

Add following section into database connection string in config file

MultipleActiveResultSets=True;

What is the single most influential book every programmer should read?

http://stackoverflow.com/questions/1711/what-is-the-single-most-influential-book-every-programmer-should-read?tab=votes#tab-top

Turn your iphone into a POS machine, Square makes payments simple.

Square is currently only available in the US for iOS and Android devices. For more information, please ask a question in the search box above

https://squareup.com/

Availability and compatibility matrix of Silverlight versions for various operating systems and web browser

http://en.wikipedia.org/wiki/Microsoft_Silverlight#Compatibility

Generating EF Code First model classes from an existing database

http://weblogs.asp.net/jgalloway/archive/2011/02/24/generating-ef-code-first-model-classes-from-an-existing-database.aspx