SharePoint:以编程方式隐藏列表字段

我试图在列表中隐藏"标题"字段.这似乎不起作用:

SPList myList;
...
SPField titleField = myList.Fields.GetField("Title");
//titleField.PushChangesToLists = true; <-- doesn't seem to make a difference
titleField.ShowInEditForm = false;
titleField.ShowInDisplayForm = false;
titleField.ShowInNewForm = false;
titleField.Update();
//myList.Update(); <-- make no difference

我究竟做错了什么？

试试这个:

field.Hidden = true;
field.Update();