如何在sharepoint 2010中从列表权限中以编程方式添加和删除组？

Question

我有以下代码将具有权限级别的组添加到sharepoint列表

SPGroup Contribute = web.SiteGroups["Staff"];
SPRoleDefinition ContributeDefinition = web.RoleDefinitions["Read"];
SPRoleAssignment ContributeRoleAssignment = new SPRoleAssignment(Contribute);
ContributeRoleAssignment.RoleDefinitionBindings.Add(ContributeDefinition);
list.RoleAssignments.Add(ContributeRoleAssignment);

这会添加组,但是如果我要撤消对该组列表的权限,我该怎么做？

提前致谢

Answer 1

如果您需要删除整个角色分配,您可以执行以下操作:

SPUser user = ...;
list.RoleAssignments.Remove(user);

如果您需要撤销某些定义绑定,您可以执行以下操作:

SPUser user = ...;
list.RoleAssignments.GetAssignmentByPrincipal(user).RoleDefinitionBindings.Remove(..);

如果您不想,请详细说明.

更新:这是我测试过的示例代码,它的工作原理.它将删除Contribute角色并将Read角色添加到目标组.请注意,我有非英语的Sharepoint版本,因此请确保角色的名称.

static void Main(string[] args)
{
  using (SPSite site = new SPSite("site_url"))
  {
    using (SPWeb web = site.OpenWeb())
    {
      SPList list = web.GetList(web.Url + "/" + "list_url");
      SPGroup group = web.SiteGroups["target_group_name"];
      SPRoleDefinition contributeDef = web.RoleDefinitions["Contribute"];
      SPRoleDefinition readDef = web.RoleDefinitions["Read"];
      SPRoleAssignment contributeRole = new SPRoleAssignment(group);
      contributeRole.RoleDefinitionBindings.Add(contributeDef);
      if (!list.HasUniqueRoleAssignments) // required to make role change
        list.BreakRoleInheritance(true);
      var assignmentForGroup = list.RoleAssignments.GetAssignmentByPrincipal(group);
      assignmentForGroup.RoleDefinitionBindings.Remove(contributeDef);
      assignmentForGroup.RoleDefinitionBindings.Add(readDef);
      assignmentForGroup.Update();
    }
  }
}