Event receiver works perfectly in debug mode, but fails in release mode

Question

Here is my item added event which works perfectly and gives read permission to CCfield user in debug mode, but doesn't give permissions to CCfield user when item added event is triggered in release mode:
base.ItemAdded(properties);
try
SPListItem item = properties.ListItem;
string idnumber = Convert.ToString(properties.ListItem["ID"]);
string itemurl = properties.ListItem.Url;
SPWeb web = properties.Web;
item.BreakRoleInheritance(false, false);
//item.Update();
string ccfield = Convert.ToString(properties.ListItem["EmailCc"]);
string STRFirst = "<" ;
string STRLast = ">";
int Pos1 = ccfield.IndexOf(STRFirst) + STRFirst.Length;
int Pos2 = ccfield.IndexOf(STRLast);
string ccfield1 = ccfield.Substring(Pos1, Pos2 - Pos1);
SPUser user = item.Web.EnsureUser(ccfield1);
SPRoleAssignment roleAssignment = new SPRoleAssignment(user);
roleAssignment.RoleDefinitionBindings.Add(web.RoleDefinitions["Read"]);
item.RoleAssignments.Add(roleAssignment);
catch (Exception e)
throw;
Any help?
sk.Rakhishma

Answer 1

Event receivers run using the permissions of the user who triggered the event. If your user does not have rights to manage permissions then you will need to run your security code with elevated permisisons.
SPSecurity.RunWithElevatedPrivileges(delegate()
{ your code here } )
Note that RunWithElevatedPermissions will not work with Sandbox code.
Mike Smith TechTrainingNotes.blogspot.com
my SP customization book