I have three lists namely X, Y and Z for which there are four different security groups called as A, B, C and D.All groups have full control to lists.My scenario is I need to break inheritance of all three lists and remove the groups C and D to have control over the lists. Security groups C and D should not have any kind of control to all the three lists.I am trying to create a feature event receiver to break inheritance .Help me out in this regards.Thanks.

  • I thing you are mixing concepts. Why do you need to break inheritance o the three lists when you say that C and D groups shouldn't have any kind of control in those lists. Why don't just removing the groups from the lists?. The other question is: Do you need a feature that when activates remove the groups C y D from the lists?
    – Alvmad
    Sep 25, 2013 at 14:02

2 Answers 2


You can use the below code,

using (SPSite site = new SPSite(SPContext.Current.Site.ID))
                    using (SPWeb web = site.OpenWeb())
                         web.AllowUnsafeUpdates = true;

                         SPGroup group = web.SiteGroups["GroupName"];

                         SPPrincipal principal = (SPPrincipal)group;

                         SPRoleAssignment rAssignment = new SPRoleAssignment(group);

                         SPList list = web.Lists["ListName"];

                         //The below function Breaks the role assignment inheritance for the list and gives the current list its own copy of the role assignments



                         //update the list, so that specific group assignment will have the access.


                         web.AllowUnsafeUpdates = false;


Hope this helps you.

  • HI karthik how to break inheritance of a page in SharePoint programatically .For the same kind of scenario as of above i want to not allow two groups to not have permissions on particular page .how to proceed.Any help would be very helpful.Thanks
    – SPLearner
    Sep 26, 2013 at 13:10

Here is an example code:

SPGroup group = web.SiteGroups["C"];
SPRoleDefinition fullControlDef = web.RoleDefinitions["Full Control"];
SPRoleAssignment fullControlRole = new SPRoleAssignment(group);
if (!list.HasUniqueRoleAssignments) 
var assignmentForGroup = list.RoleAssignments.GetAssignmentByPrincipal(group);
  • Hi nadeem Thanks for the response but how would i remove permissions of those two groups no to have any permission on two lists .?
    – SPLearner
    Sep 25, 2013 at 13:58
  • Check the code, it is done here: var assignmentForGroup = list.RoleAssignments.GetAssignmentByPrincipal(group); assignmentForGroup.RoleDefinitionBindings.Remove(fullControlDef); Sep 25, 2013 at 14:01

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