The controls that implement the IButtonControl interface in Asp.Net 2.0 have a PostBackUrl attribute, which can be submitted across pages, using the POST method. Then the POST submission that took a lot of trouble in 1.x is very simple. Just set PostBackUrl as the submission page, and use Request.Params[] on the submission page to get the POST form parameters. You can also use PreviousPage.FindControl to get the control on the previous page. The values used here with Request and PreviousPage are very similar to Server.Transfer, but CrossPagePostBack can cross sites.
Here is an example with localization tests.
PS, I wonder if anyone has encountered a similar situation: if the resource file under /App_GlobalResources contains Resource.zh.resx, an error will be reported. . My VS is in Chinese, so I guess its default resource file is Resource.zh.resx.