手动编辑绑定到不断更新的属性的文本框的问题

I have a textbox bound to a property. The property continously gets updated from a timer. What I'm trying to do is to make it so that when I'm in the middle of typing something in the textbox, the textbox should stop updating itself from the property. Is there a way to do that?I have a textbox bound to a property. The prope