Get single user from multiple domain problem

Question

This is my situation. I have a farm in which an instance of Sharepoint Foundation is installed.. Windows Server is configure to accept users from 3 trusted domain (xxx, yyy and zzz)

Suppose i have user like:

xxx\u1 yyy\u1

When i told people picker xxx\u1 he cannot resolve the name and ask me to choose between xxx\u1 and yyy\u1...

This is not a problem in that moment, but when I try to access programmatically to users it creates problem..

I access like this:

Web.EnsureUser("xxx\u1");

Is there any other way to do the same thing but with the correct domain\username selection?

Thank you very much!

Answer 1

I use UserProfile to access this type of data. http://msdn.microsoft.com/en-us/library/microsoft.office.server.userprofiles.userprofile.aspx

here's some sample code of using it with people picker

private UserProfile GetExistingEmployee(string CurrentWebSiteURL)
{
    UserProfile profile = null;
    using (SPSite site = new SPSite(CurrentWebSiteURL))
    {
        ServerContext context = ServerContext.GetContext(site);
        UserProfileManager mgr = new UserProfileManager(context);

        using (SPWeb web = site.OpenWeb())
        {
            SPList list = web.Lists["EmployeeData"];
            SPListItem item = list.Items.Add();
            peopleEditor2 = new PeopleEditor();
            peopleEditor2.AutoPostBack = true;
            peopleEditor2.ID = "PeopleEditor2";
            peopleEditor2.AllowEmpty = false;
            peopleEditor2.MultiSelect = false;
            if (existingEmployeePeoplePicker.ResolvedEntities.Count > 0)
            {
                PickerEntity selectedEntity2 = (PickerEntity) existingEmployeePeoplePicker.ResolvedEntities[0];
                profile = mgr.GetUserProfile(selectedEntity2.Key);
                existingEmployeePeoplePicker.AutoPostBack = true;
                return profile;
            }
        }
    }