控制哪个字段显示在数据绑定WPF ComboBox的文本框部分中

I have a ComboBox in WPF which is databound, and has data template which controls how each of the items is displayed. I have made it so that each item is displayed with two bits of text (for the Name and Path properties) and one image (for the Icon property).I have a ComboBox in WPF which is databound, an