LDAP проверка пользователя существует
public bool UserExists(string username)
{
// create your domain context
using (PrincipalContext domain = new PrincipalContext(ContextType.Domain))
{
// find the user
UserPrincipal foundUser = UserPrincipal.FindByIdentity(domain, IdentityType.Name, username);
return foundUser != null;
}
}
Elnur Ceferli