How can I search Active Directory by username using C#?

Question

I\'m trying to search active directory by the username \'admin\'. I know for a fact that there is a user with that username in the directory, but the search keeps coming bac

Answer 1

if you want to stick to DirectorySearcher, try searching by cn or samaccountname instead

var attributeName = "cn";
var searchString = "admin"
var ent = new DirectoryEntry("LDAP://"dc=corp,dc=contoso,dc=com")
var mySearcher = new DirectorySearcher(ent);
mySearcher.Filter = string.Format("(&(objectcategory=user)({0}={1}))", attributeName, searchString);

var userResult = mySearcher.FindOne();