Get SPUser object

Question

I am trying this code to get SPUser object but it keeps throwing exception of user not found even when it returns true for DoesUserHavePermissions(..., does anyone know any fix or way around ?

if (web.Site.RootWeb.DoesUserHavePermissions("UserLoginName", SPBasePermissions.Open))
{
   SPUser user = web.Site.RootWeb.Users["UserLoginName"];
}

Can't use web.Ensure

Answer 1

Try RootWeb.AllUsers instead.

if (web.Site.RootWeb.DoesUserHavePermissions("UserLoginName", SPBasePermissions.Open))
{
   SPUser user = web.Site.RootWeb.AllUsers["UserLoginName"];
}

Or you can also try RootWeb.SiteUsers

Reference

Answer 2

just created this console app for you:

        try
        {
            using (SPSite mysite = new SPSite("http://yourwebsite:2010"))
            {

                using (SPWeb web = mysite.OpenWeb())
                {
                    Console.Write("web users");
                    Console.WriteLine();
                    Console.WriteLine();
                    foreach (SPUser user in web.Users)
                    {
                        Console.Write(user.Name);
                        Console.WriteLine();
                    }

                    Console.WriteLine();
                    Console.WriteLine();
                    Console.Write("site collection users");
                    Console.WriteLine();
                    Console.WriteLine();
                    foreach (SPUser user in web.SiteUsers)
                    {
                        Console.Write(user.Name);
                        Console.WriteLine();
                    }
                }

            }
        }
        catch (Exception a)
        {
        }

        Console.Read();

so what you want is web.SiteUsers for site collection and web.Users for webs ;) not web.Site.RootWeb.Users. If you run the code above within a console app you should see the user within the list and if it has a domain tag or not!

or do:

using (SPWeb web = SPContext.Current.Site.RootWeb) 
{
    SPUser user = web.Users["UserLoginName"];
}

get the correct web context if your looking for the root web of a site ;)