InvalidOperationException: Operation is not valid due to the current state of the object

Question

I'm trying to update item security while adding new item but getting following error. How to find the problem from this trace ?

Stack Trace: [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
updatelistpermission(SPWeb web, SharedSurveyHeader objEntity, SPListItem lstItem, String strStatus) +816
routine.<>c_DisplayClass3.b_0() +688
Microsoft.SharePoint.<>c_DisplayClass4.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

Here is my code,

   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["SharedHeader"];
                                SPListItem lstItem = lstProject.Items.Add();
                                loadToListItem(sharedHeader, ref lstItem, true);
                                updatelistpermission(web, sharedHeader, lstItem, strStatus);
                                lstItem.Update();
                                web.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)
        {

        }
    }

Answer 1

Replace the segment of code with below code:

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

    SPList lstProject = web.Lists["SharedHeader"];
    //lstProject.BreakRoleInheritance(true);
    //lstProject.Update();

    lstProject = web.Lists["SharedHeader"];
    SPListItem lstItem = lstProject.Items.Add();
    loadToListItem(sharedHeader, ref lstItem, true);
    lstItem.Update();

    lstItem = lstProject.GetItemById(lstItem.ID);
    lstItem.BreakRoleInheritance(false);
    lstItem.Update();

    lstItem = lstProject.GetItemById(lstItem.ID);
    updatelistpermission(web, sharedHeader, lstItem, strStatus);
    lstItem.Update();

    web.AllowUnsafeUpdates = false;
    intResult = lstItem.ID;
    lstItem = null;
    lstProject = null;
}

When you are adding the Item until lstItem.Update() is not called, the Item is not made in the list... and thus you cannot set permissions on the Item which doesn't exist!

So first you need to call lstItem.Update to create the Item in the list and then get the new Item again by list.GetItemById() and then set the permissions on the Item!

UPDATE:
I have updated the code above!
Please follow this article

I hope this helps!