Cross Page Posting is a new feature in ASP.NET 2.0. By using
this feature we can submit a form (say crosspage1.aspx) and post the form along
with all its control values into another page (say crosspage2.aspx). Using
this feature is straightforward and simple. We have to set PostBackUrl
property on any web controls that implement the
System.Web.UI.WebControls.IButtonControl interface, which includes Button,
ImageButton and LinkButton.