实体框架将使用在操作方法中创建的记录替换新添加的记录

I want to implement this simple scenario ,which I though EF will support out of the box. I have a parent record named (Skill) and I am adding child records named (LinktoKB) to it. Now after adding a new LinktoKB, I want to return a view containing the up-to-date list of LinkToKBs (inclusing the newly added one). Now my Post action method to add new LinktoKB is :-I want to implement this simple scenario ,which