When using constructor to instance an object of  DirectorySearcher, there is parameter prppertiesToLoad that is a array of property names

Dim ds As DirectorySearcher = New DirectorySearcher(searchRoot, sFilter, columns, SearchScope.Subtree)

For example {"givenName", "sn", "cn", "sAMAccountName", "telephoneNumber", "l"}

Where to get all available property name for those properties? 

I want to get the properties for Account is locked out for the user account I searched out.  

short answer:

Result collection -->Get a single director entry --> result property collection -->Loop thru all the attributes(sn,cn....) in the result property collection for the directory entry...

I think I got the above correct. Also I would suggest read the DirectoryServices class.  All the objects/properties/methods/collections ... are well documented in MSDN.

Good idea. Thanks.