sharepoint 2013 文档库eventhandle权限控制

记录一下如何在sharepoint server 2013文档库中，使用eventhandle控制文档库document library的条目item权限。

       ///<summary>

        ///已添加项.

        ///</summary>

        public override void ItemAdded(SPItemEventProperties properties)

        {

            base.ItemAdded(properties);

            SPSecurity.RunWithElevatedPrivileges(delegate()

            {

                if(properties.ListTitle =="共享文档1")

                {

                    SPSite site =newSPSite(properties.SiteId);

                    SPWeb web =site.OpenWeb();

                    web.AllowUnsafeUpdates = true;

                    SPList list =web.Lists[properties.ListId];

                    SPFile file =list.GetItemById(properties.ListItemId).File;

                    SPListItem item = file.Item;

                    //权限断开，并且移除掉其它权限

                    if(!item.HasUniqueRoleAssignments)

                    {

                       item.BreakRoleInheritance(false);

                    }

                    //添加用户权限

                    SPUser CurrentUser =web.EnsureUser(properties.UserLoginName);

                    SPRoleAssignment MyRoleAssignment =newSPRoleAssignment(CurrentUser);

                   MyRoleAssignment.RoleDefinitionBindings.Add(web.RoleDefinitions.GetByType(SPRoleType.WebDesigner));

                   item.RoleAssignments.Add(MyRoleAssignment);

 

                    CurrentUser =web.EnsureUser("kw\\cxx");

                    MyRoleAssignment = newSPRoleAssignment(CurrentUser);

                   MyRoleAssignment.RoleDefinitionBindings.Add(web.RoleDefinitions.GetByType(SPRoleType.WebDesigner));

                   item.RoleAssignments.Add(MyRoleAssignment);

                    item.Update();

                }

            });

        }