Hi all,
I've got a fairly straightforward event handler on a document library that uses
ItemAdded to apply permissions on a document based on a column value in the CT.
This is working quite well with only a few limitations. The main one being that
items being updated (either via update copy or overwrite) are not being
affected.
Excuse my naivety but could I simply re-use the code below, replacing ItemAdded
with ItemUpdated, and push out a new event type to attach to the library?
using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.SharePoint;
namespace CEO.Intranet.DocumentCentre.Library
{
public class ItemEventHandler: SPItemEventReceiver
{
public override void ItemAdded(SPItemEventProperties properties)
{
base.ItemAdded(properties);
SPListItem originalItem = properties.ListItem;
string url = properties.WebUrl;
SPListItem item = null;
SPSecurity.RunWithElevatedPrivileges(delegate()
{
try
{
using (SPSite site = new SPSite(url))
{
using (SPWeb web = site.OpenWeb())
{
item =
web.Lists[properties.ListId].GetItemById(properties.ListItemId);
}
}
}
catch (Exception)
{
try
{
using (SPSite site = new SPSite(url))
{
using (SPWeb web = site.OpenWeb())
{
SPList list =
web.Lists[originalItem.ParentList.ID];
item = list.Items[originalItem.UniqueId];
}
}
}
catch (Exception ex1)
{
Console.WriteLine(ex1.Message);
}
}
if (item != null)
SetSecurityForNewItem(item);
});
}
private void SetSecurityForNewItem(SPListItem newItem)
{
//SPListItem newItem = newFile.Item;
try
{
newItem.BreakRoleInheritance(true);
SPGroupCollection groupCollection =
newItem.ParentList.ParentWeb.Groups;
SPRoleDefinitionCollection roleDefinitions =
newItem.ParentList.ParentWeb.RoleDefinitions;
char[] seperator = new char[] { ';' };
string groupPermissions = newItem["Group
Permissions"].ToString();
string[] permissionGroups = groupPermissions.Split(seperator);
bool removeReadPermissions = true;
if (permissionGroups[1] != "#All Portal Users")
{
foreach (SPGroup spGroup in groupCollection)
{
removeReadPermissions = true;
foreach (string subString in permissionGroups)
{
if (subString.Length > 1 && spGroup.Name ==
subString.Substring(1))
{
removeReadPermissions = false;
}
}
if (removeReadPermissions)
{
SPRoleAssignmentCollection roleAssignmentCollection
= newItem.RoleAssignments;
foreach (SPRoleAssignment roleAssignment in
roleAssignmentCollection)
{
if(roleAssignment.Member.Name == spGroup.Name)
{
SPRoleDefinitionBindingCollection
roleDefBindings = roleAssignment.RoleDefinitionBindings;
if
(roleDefBindings.Contains(roleDefinitions["Read"]))
{
roleDefBindings.Remove(roleDefinitions["Read"]);
roleAssignment.Update();
}
}
}
}
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
}
}
Regards,
Paul
Online Developer, ICT
CEO Sydney
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