You are implementing a new Dynamic Data Web site. The Web site includes a Web page that has an ObjectDataSource control named ObjectDataSource1. ObjectDataSource1 interacts with a Web service that exposes methods for listing and editing instances of a class named Product. You add a GridView control named GridView1 to the page, and you specify that GridView1 should use ObjectDataSource1 as its data source. You then configure GridView1 to auto-generate fields and to enable editing. You need to add Dynamic Data 
A、A.Add a DynamicDataManager control to the Web page.
B.Disable the auto-generated fields on GridView1. Add a DynamicField control for each field of the Product class.
C.Add the following code segment to the Application_Start method in the Global.asax.cs file.
D.Add the following code segment to the Page_Init method of the Web page.