Accessing Enterprise Application Blocks

There are mutiple ways to access application blocks :

Using the Enterprise Library Service Locator

var writer = EnterpriseLibraryContainer.Current.GetInstance();

writer.Write("I'm a log entry created by the Logging block!");

var customerDb

= EnterpriseLibraryContainer.Current.GetInstance("Customers");

The Sophisticated Approach — Accessing the Container Directly

var theContainer = new

UnityContainer().AddNewExtension();

var writer = theContainer.Resolve();

writer.Write("I'm a log entry created by the Logging block!");

var customerDb = theContainer.Resolve("Customers");

Check out this diagram :

http://msdn.microsoft.com/en-us/library/Ff953191.441da4ba-fa2e-4da3-bac1-89897580d80b(l=en-us,v=PandP.50).png

Validation Application Block

If you are looking for one stop article to understand the Validation application block , check out this article :

http://msdn.microsoft.com/en-us/library/ff953182(v=PandP.50).aspx

Also download these hands on Labs :

http://www.microsoft.com/downloads/en/details.aspx?FamilyID=2C34A9CB-17CF-4AEC-8DE6-EEACBBB74413