Active Directory from LINQPad

AD.cs

var searchRoot = new System.DirectoryServices.DirectoryEntry(
	@"LDAP://server:389/DC=foo,DC=com",
	@"DOMAIN\USERNAME",
	"PASSWORD"
){ AuthenticationType = AuthenticationTypes.ReadonlyServer };

using(var searcher = new System.DirectoryServices.DirectorySearcher(searchRoot)) {
	searcher.Filter = "(&(objectCategory=group))";
	var results = searcher.FindAll();
	results.Dump();
}