PreviousPage object in ASP.NET Whidbey

Along with my previous post about the PostBackUrl property, there is now a PreviousPage object in ASP.NET Whidbey.  To get back values from the controls, you will need to do something like this:

//textbox is my example.
string ValueFromTextBox;
TextBox mytb = ((TextBox)PreviousPage.FindControl("TextBoxControlNameGoesHere"));
if ( mytb != null )
{
   ValueFromTextBox = mytb.Text;
}

//Note: I did not check my code in the VS.NET Whidbey IDE before I posted it.