功能部分,参考:
http://www.cnblogs.com/insus/archive/2013/05/01/3052604.html
http://www.cnblogs.com/insus/p/3439599.html
http://www.cnblogs.com/insus/p/3466512.html
http://www.cnblogs.com/insus/archive/2013/01/22/2872329.html
http://www.cnblogs.com/insus/archive/2010/03/13/1685007.html
http://www.cnblogs.com/insus/archive/2013/05/01/3052604.html
http://www.cnblogs.com/insus/p/3439599.html
http://www.cnblogs.com/insus/p/3466512.html
http://www.cnblogs.com/insus/archive/2013/01/22/2872329.html
http://www.cnblogs.com/insus/archive/2010/03/13/1685007.html
Packet Size=8192;Max Pool Size=1000;" providerName="System.Data.SqlClient