I have document library & 3 groups(AdminGroup,Reviewer,Distributor). I have already give a permission on groups, AdminGroup has Full Control, Reviewer has Reader & Distributor has None :

 roleDefinition = web.RoleDefinitions.GetByType(SPRoleType.Administrator); // Admin
 roleDefinition = web.RoleDefinitions.GetByType(SPRoleType.Reader); // Reviewer
 roleDefinition = web.RoleDefinitions.GetByType(SPRoleType.None); // Distributor

Now, I want to give permission on document library that :

  • If anyone upload document it's Draft version should only visible to Reviewer,Admin & owner of the document. Distributor user can't see it if he is not owner.
  • Reviewer Group's user can only view/edit the document & publish it but can't Approve/Reject it.
  • Admin has full control. He can Add/Edit/View & Approve/reject the document.
  • Distributor Group's user can only view his own documents & Approved documents.

2 Answers 2


Attach a event recevier and add item added / updated event to it for assigneing permission.

First break permission on item and then add required permission as per item status / metadata.


I have found the solution to assign permission to group:

 using (SPSite spSite = SPContext.Current.Site)
     using (SPWeb web = spSite.OpenWeb())
        web.AllowUnsafeUpdates = true;
        SPGroupCollection grpColl = SPContext.Current.Site.OpenWeb().SiteGroups;
        SPGroup spGroup =  grpColl.GetByName("myGroup");

SPRoleAssignment roleAssignment = new SPRoleAssignment(spGroup); SPRoleDefinition roleDefinition = new SPRoleDefinition(); roleDefinition = web.RoleDefinitions.GetByType(SPRoleType.Administrator); // for admin role SPRoleDefinitionBindingCollection roleDefinitionBindingCollection = new SPRoleDefinitionBindingCollection(); roleDefinitionBindingCollection.Add(roleDefinition); roleAssignment.ImportRoleDefinitionBindings(roleDefinitionBindingCollection); web.AllowUnsafeUpdates = true; web.RoleAssignments.Add(roleAssignment); web.update(); web.AllowUnsafeUpdates = false; }}

Then, Give same permission to Document Library.

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