How can I copy a folder from on library to another and maintain permissions on the folder structure?

Question

I want to copy a folder from on document library to another document library and maintain permissions on the folder structure. When I CUT the folder and paste it the permissions on the folder structure are maintained. When I want to COPY the folder and paste it, the folder inherits the permissions all over again. How can I resolve this?

Does somebody got an awnser to this????

Answer 1

You can try this code, CopyItemPermission:

        using (SPSite site = new SPSite("http://yoursite"))
        {
            using (SPWeb web = site.OpenWeb())
            {
                SPList sourceList = web.Lists.TryGetList("SourceLibrary");
                SPList targetList = web.Lists.TryGetList("TargetLibrary");

                SPListItem sourceItem = sourceList.GetItemById(47);
                SPFolder sourceFolder = sourceItem.Folder;
                string targetPath = targetList.RootFolder.ServerRelativeUrl + "/" + sourceFolder.Name;
                sourceFolder.CopyTo(targetPath);

                SPFolder targetFolder = web.GetFolder(targetPath);
                SPListItem targetItem = targetFolder.Item;

                CopyItemPermission(sourceItem, targetItem);
            }
        }

    public static void CopyItemPermission(SPListItem SourceItem, SPListItem TargetItem)
    {
        SPSecurity.RunWithElevatedPrivileges(delegate()
        {
            TargetItem.SystemUpdate();
            if (SourceItem.HasUniqueRoleAssignments)
            {
                TargetItem.BreakRoleInheritance(true);
            }
            else
            {
                return;
                //TargetItem.BreakRoleInheritance(false);
            }

            while (TargetItem.RoleAssignments.Count > 0)
            {
                TargetItem.RoleAssignments.Remove(0);
            }
            //copying all the permission from source item to target item
            foreach (SPRoleAssignment role in SourceItem.RoleAssignments)
            {
                TargetItem.RoleAssignments.Add(role);
            }
            TargetItem.SystemUpdate(false);
        });
    }

Happy Coding !!!