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Problem to add Permissions To Users

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Hello,

I want to manage permissions for each item of List. In my List I have to fields "Readers" and "Contributors". When user want to add a new item, he must write also the readers and the contributors in the appropiate fields. So, I developped an eventHandler "ItemAdded" that modifiy permessions, but when I try to excute it I don't have a good result. this is my code

 public override void ItemAdded(SPItemEventProperties properties)
        {
            this.DisableEventFiring();
            base.ItemAdded(properties);
            SPWeb web = null;
            try
            {

                web = new SPSite(properties.SiteId).OpenWeb(properties.RelativeWebUrl);

                SPListItem item = web.Lists[properties.ListId].GetItemById(properties.ListItemId);

              

                item.BreakRoleInheritance(false);

                

                #region Add full Control to Author
                String loginAdmin = properties.UserLoginName;
                SPUser userAdmin = web.Users[loginAdmin];

                SPRoleDefinition roleDefAdmin = web.RoleDefinitions.GetByType(SPRoleType.Administrator);

                SPRoleAssignment roleAssignementAdmin = new SPRoleAssignment(userAdmin);

                roleAssignementAdmin.RoleDefinitionBindings.Add(roleDefAdmin);

                item.RoleAssignments.Add(roleAssignementAdmin);
                
                #endregion


                #region Add Reader
                SPFieldUserValueCollection usersvaluesLecteurs = (SPFieldUserValueCollection)item["Lecteurs"];

                for (int i = 0; i < usersvaluesLecteurs.Count; i++)
                {
                    SPUser userLecteur = usersvaluesLecteurs[i].User;

                  

                    SPRoleDefinition roleDefLecteur = web.RoleDefinitions.GetByType(SPRoleType.Reader);

                    SPRoleAssignment roleAssignementLecteur = new SPRoleAssignment(userLecteur);

                    roleAssignementLecteur.RoleDefinitionBindings.Add(roleDefLecteur);

                    item.RoleAssignments.Add(roleAssignementLecteur);


                }
                #endregion

                #region Add Contributor
                SPFieldUserValueCollection usersvaluesModificateurs = (SPFieldUserValueCollection)item["Modificateurs"];

                for (int i = 0; i < usersvaluesModificateurs.Count; i++)
                {
                    SPUser userModificateur = usersvaluesModificateurs[i].User;

                    //on ajoute le user sur le dossier

                    SPRoleDefinition roleDefModificateur = web.RoleDefinitions.GetByType(SPRoleType.Contributor);

                    SPRoleAssignment roleAssignementModificateur = new SPRoleAssignment(userModificateur);

                    roleAssignementModificateur.RoleDefinitionBindings.Add(roleDefModificateur);

                    item.RoleAssignments.Add(roleAssignementModificateur);

                }
                #endregion

                item.Update();
                this.EnableEventFiring();

            }

            catch (Exception ex)
            {

                properties.Cancel = true;

                properties.ErrorMessage = "Erreur dans l'Event ItemAdded : " + ex.Message;

            }

            finally
            {

                if (web != null)

                    web.Dispose();
            }

This my problem : I added an item created by Administrator and I added a user1 for reading and modifying. After, I change the current user to user1, but I didn't see anything in my List (I must see the Item because user1 is a reader).

I hope that you can help me.
Thank you

Sunday, April 19, 2009 12:09 PM

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Problem to add Permissions To Users

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