Sharepoint 2010 InvalidOperationException:由于对象的当前状态，操作无效

我试图在添加新项目时更新项目安全性，但得到以下信息。如何从该跟踪中找到问题

InvalidOperationException: Operation is not valid due to the current state of the object.]
   Microsoft.SharePoint.SPListItem.InitSecurity() +26790031
   Microsoft.SharePoint.SPListItem.get_SecurableObjectImpl() +16
   Microsoft.SharePoint.SPSecurableObject.get_RoleAssignments() +10
   Updateroutine.<>c__DisplayClass2.<updatelistpermission>b__0() +1955
   Microsoft.SharePoint.<>c__DisplayClass4.<RunWithElevatedPrivileges>b__2() +729
   Microsoft.SharePoint.Utilities.SecurityContext.RunAsProcess(CodeToRunElevated secureCode) +27947702
   Microsoft.SharePoint.SPSecurity.RunWithElevatedPrivileges(WaitCallback secureCode, Object param) +27648393
   Microsoft.SharePoint.SPSecurity.RunWithElevatedPrivileges(CodeToRunElevated secureCode) +93

由@Dmitry Kozlov建议的新代码，但仍然是相同的错误

try
                {
                    {
                        SPUserToken token = SPContext.Current.Web.Site.SystemAccount.UserToken;

                        SPSecurity.RunWithElevatedPrivileges(delegate()
                        {
                            using (SPSite site = new SPSite(SPContext.Current.Web.Site.ID, token))
                            {
                                site.AllowUnsafeUpdates = true;

                                using (SPWeb web = site.OpenWeb(SPContext.Current.Web.ID))
                                {
                                    web.AllowUnsafeUpdates = true;
                                    web.BreakRoleInheritance(true);
                                    web.AllowUnsafeUpdates = true;

                                    SPList lstProject = web.Lists["SharedSurveyHeader"];
                                    SPListItem lstItem = lstProject.Items.Add();
                                    loadToListItem(sharedHeader, ref lstItem, true);
                                    updatelistpermission(web, sharedHeader, lstItem, strStatus);
                                    lstItem.Update();
                                    objWeb.AllowUnsafeUpdates = false;
                                    intResult = lstItem.ID;
                                    lstItem = null;
                                    lstProject = null;
                                }
                            }
                        });


                    }

                 }


private static void updatelistpermission(SPWeb web, SharedSurveyHeader objEntity, SPListItem lstItem,string strStatus)
        {
             try
            {

                            SPRoleDefinition roleUserDefintion = null;
                            SPRoleDefinition roleSupervisorDefintion = null;
                            SPRoleDefinition roleOpManagerDefintion = null;

                            if (strStatus == "Active")
                            {
                                roleUserDefintion = web.RoleDefinitions.GetByType(SPRoleType.Contributor);
                                roleSupervisorDefintion = web.RoleDefinitions.GetByType(SPRoleType.Reader);
                                roleOpManagerDefintion = web.RoleDefinitions.GetByType(SPRoleType.Reader);
                            }
                            else if (strStatus == "Submitted")
                            {
                                roleUserDefintion = web.RoleDefinitions.GetByType(SPRoleType.Reader);
                                roleSupervisorDefintion = web.RoleDefinitions.GetByType(SPRoleType.Contributor);
                                roleOpManagerDefintion = web.RoleDefinitions.GetByType(SPRoleType.Contributor);
                            }
                            else if (strStatus == "Completed")
                            {
                                roleUserDefintion = web.RoleDefinitions.GetByType(SPRoleType.Reader);
                                roleSupervisorDefintion = web.RoleDefinitions.GetByType(SPRoleType.Reader);
                                roleOpManagerDefintion = web.RoleDefinitions.GetByType(SPRoleType.Reader);
                            }

                            SPUser uParticipant = Utility.convertStringToSPUser(Utility.getSPStringLookupFromListGLT(objEntity.Participant));
                            SPRoleAssignment roleUserAssignment = new SPRoleAssignment(uParticipant);

                            SPUser uSupervisor = Utility.convertStringToSPUser(Utility.getSPStringLookupFromListGLT(objEntity.Supervisor));
                            SPRoleAssignment roleSupervisorAssignment = new SPRoleAssignment(uSupervisor);

                            SPUser uOpManager = Utility.convertStringToSPUser(Utility.getSPStringLookupFromListGLT(objEntity.OpsManager));
                            SPRoleAssignment roleuOpManagerAssignment = new SPRoleAssignment(uOpManager);

                            roleUserAssignment.RoleDefinitionBindings.Add(roleUserDefintion);
                            lstItem.RoleAssignments.Add(roleUserAssignment);

                            roleSupervisorAssignment.RoleDefinitionBindings.Add(roleSupervisorDefintion);
                            lstItem.RoleAssignments.Add(roleSupervisorAssignment);

                            roleuOpManagerAssignment.RoleDefinitionBindings.Add(roleOpManagerDefintion);
                            lstItem.RoleAssignments.Add(roleuOpManagerAssignment);

            }
            catch (SPException spex)
            {

            }
        }

---

尝试从您以提升权限打开的网站获取列表项并使用它：

SPSecurity.RunWithElevatedPrivileges(delegate()
{
    using (SPSite site = new SPSite(lstItem.Web.Site.ID, token))
    {
        site.AllowUnsafeUpdates = true;
        using (SPWeb web = site.OpenWeb(lstItem.Web.ID))
        {
           web.AllowUnsafeUpdates = true;

           // Get list item here:
           var newListItem = web.GetListItem(itemUrl);
           ...
        }
    }
}

---

@添加了RichBennema代码。您使用的是当前网站，而不是刚以提升权限打开的网站：SPList lstProject=SPContext.current.web.Lists[“ListHeader”]；

SPSecurity.RunWithElevatedPrivileges(delegate()
{
    using (SPSite site = new SPSite(lstItem.Web.Site.ID, token))
    {
        site.AllowUnsafeUpdates = true;
        using (SPWeb web = site.OpenWeb(lstItem.Web.ID))
        {
           web.AllowUnsafeUpdates = true;

           // Get list item here:
           var newListItem = web.GetListItem(itemUrl);
           ...
        }
    }
}