Set Permission List or Document Library SharePoint Using EventHandler

Sample code to set permission using EventHandler when ItemAdded.

1: using System;

2: using System.Collections.Generic;

3: using System.Text;

4: using Microsoft.SharePoint;

5:   

6: namespace EventHandler

7: {

8:  public class SetPermissionItemEventReceiver : SPItemEventReceiver

9:  {

10:   public override void ItemAdded(SPItemEventProperties properties)

11:   {

12:       SetPermission(properties);

13:   }

14:   

15:   private void SetPermission(SPItemEventProperties properties)

16:   {

17:     string LoginName = properties.UserLoginName;

18:     SPSecurity.RunWithElevatedPrivileges(delegate()

19:     {

20:       using (SPSite site = new SPSite(properties.SiteId))

21:       {

22:         using (SPWeb web = site.OpenWeb(properties.RelativeWebUrl))

23:         {

24:            this.DisableEventFiring();

25:   

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

27:   

28:            string ListName = item.ListItems.List.RootFolder.Name;

29:   

30:            if (!item.HasUniqueRoleAssignments)

31:                 item.BreakRoleInheritance(false);

32:   

33:            SPRoleDefinition ContributeRoleDefinition =
                                 item.Web.RoleDefinitions["Contribute"];

34:            SPRoleDefinition ApproveRoleDefinition =
                                 item.Web.RoleDefinitions["Approve"];

35:            SPRoleDefinition FullControlRoleDefinition =
                                 item.Web.RoleDefinitions["Full Control"];

36:   

37:            SPRoleAssignment UserRoleAssignment = new SPRoleAssignment(LoginName, 
                                 string.Empty, string.Empty, string.Empty);

38:            UserRoleAssignment.RoleDefinitionBindings.Add(ContributeRoleDefinition);

39:            item.RoleAssignments.Add(UserRoleAssignment);

40:   

41:            SPGroup OwnerGroup = item.Web.SiteGroups["Owners"];

42:            SPRoleAssignment OwnerRoleAssignment = new SPRoleAssignment(OwnerGroup);

43:            OwnerRoleAssignment.RoleDefinitionBindings.Add(FullControlRoleDefinition);

44:            item.RoleAssignments.Add(OwnerRoleAssignment);

45:   

46:            SPGroup ApproversGroup = item.Web.SiteGroups[
                                  string.Format("{0}_Approvers", ListName)];

47:            SPRoleAssignment ApproversRoleAssignment = new SPRoleAssignment(ApproversGroup);

48:            ApproversRoleAssignment.RoleDefinitionBindings.Add(ApproveRoleDefinition);

49:            item.RoleAssignments.Add(ApproversRoleAssignment);

50:   

51:            this.EnableEventFiring();

52:          }

53:        }

54:      });

55:     }

56:   }

57: }