Programming Glossary: answer

http://stackoverflow.com/questions/142003/cross-thread-operation-not-valid-control-accessed-from-a-thread-other-than-the

http://stackoverflow.com/questions/151005/create-excel-xls-and-xlsx-file-from-c-sharp

http://stackoverflow.com/questions/158706/how-to-properly-clean-up-excel-interop-objects

http://stackoverflow.com/questions/202011/encrypt-decrypt-string-in-net

I've edited this answer over time to address.. see jbtule's answer for a more robust informed.. 2012 April This answer was edited to pre pend..

http://stackoverflow.com/questions/311165/how-do-you-convert-byte-array-to-hexadecimal-string-and-vice-versa

I couldn't find an answer that neatly explains..

http://stackoverflow.com/questions/32260/sending-email-in-net-through-gmail

http://stackoverflow.com/questions/371328/why-is-it-important-to-override-gethashcode-when-equals-method-is-overridden

http://stackoverflow.com/questions/41244/dynamic-linq-orderby-on-ienumerablet

http://stackoverflow.com/questions/441309/why-are-mutable-structs-evil

evil like in the answer to this question . What's..

http://stackoverflow.com/questions/5181777/use-of-application-doevents

http://stackoverflow.com/questions/7074/whats-the-difference-between-string-and-string

http://stackoverflow.com/questions/767999/random-number-generator-only-generating-one-random-number

http://stackoverflow.com/questions/78536/deep-cloning-objects-in-c-sharp

http://stackoverflow.com/questions/846994/how-to-use-html-agility-pack

http://stackoverflow.com/questions/876473/is-there-a-way-to-check-if-a-file-is-in-use