View Items permissions not working in sharepoint 2013

Question

I want to assign anonymous access to list items. For that I have assigned anonymous access to web application and "Lists and libraries" permissions to site collection.

Now to assign permission to list I have written code:

using (SPSite site = new SPSite(RootSiteUrl))
            {
                uint rootWebLanguage = site.RootWeb.Language;
                SPWebCollection allWebs = site.AllWebs;

                foreach (SPWeb currentWeb in allWebs)
                {
                    SPList list = currentWeb.Lists.TryGetList("listName");
                    if (list != null)
                    {
                        list.BreakRoleInheritance(true);
                        list.AllowEveryoneViewItems = true;
                        list.AnonymousPermMask = SPRights.ViewListItems;
                        //list.AnonymousPermMask64 = SPBasePermissions.ViewListItems;
                        list.Update();
                    }
                }
            }

This code will assign "View Items" permission to list but when I try to open list item in different browser then it is asking for login.

And if I will do same thing manually in that case I'm able to access list item anonymously.

It is not working using when I will try with coding.

Answer 1

Here is your answer.

using (SPSite site = new SPSite(RootSiteUrl))
{
uint rootWebLanguage = site.RootWeb.Language;
SPWebCollection allWebs = site.AllWebs;

foreach (SPWeb currentWeb in allWebs)
{
    SPList list = currentWeb.Lists.TryGetList("listName");
    if (list != null)
    {
          if (!list.HasUniqueRoleAssignments)
    {
        list.BreakRoleInheritance(true);
    }                    
    SPBasePermissions sPBasePermissions = SPBasePermissions.EmptyMask;
    SPBasePermissions basePermissions = web.RoleDefinitions.GetByType(SPRoleType.Guest).BasePermissions;
    {
        sPBasePermissions = (basePermissions & ~(SPBasePermissions.BrowseUserInfo | SPBasePermissions.UseRemoteAPIs));
        sPBasePermissions |= (SPBasePermissions.ViewListItems | SPBasePermissions.OpenItems | SPBasePermissions.ViewVersions | SPBasePermissions.Open);
    }
    list.AnonymousPermMask64 = sPBasePermissions;
    list.Update();
    }
}
}

Hope it will help you.