DataSource对下列数据源有效

    * DataTable
    * DataView
    * DataSet
    * DataViewManager
    * 任何实现 IListSource 接口的组件 
    * 任何实现 IList 接口的组件：可利用此特性进行每条记录数据的对象封装

如： list.Add(new Product {id = 1, name = "Melon", price = 12});
        list.Add(new Product {id = 2,name = "Pear", price = 13});
        list.Add(new Product {id = 3,name = "Milk", price = 14});
        list.Add(new Product {id = 4,name = "Coca Cola", price = 15});
        list.Add(new Product {id = 5,name = "Pepsi Cola", price = 16});
        gv.DataSource = list;
        gv.DataBind();