In this chapter, you'll be modifying the Main.aspx page. So that you can refer back to this page later, if necessary, follow these steps to preserve your original page:
In the Solution Explorer window, select Main.aspx.
Right-click the page and select Copy from the context menu.
Select the project, Northwind, in the Solution Explorer window.
Right-click and select Paste from the context menu.
In the Solution Explorer window, select Copy of Main.aspx, right-click, and select Rename from the context menu. Rename the page as MainOriginal.aspx.
Right-click again and select View Code from the context menu. Modify the class name declaration, near the top of the file (Public Class Main), so that it ...