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Editorial Team
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Asked: 2026-06-02T15:47:45+00:00

On pippo.aspx and pippo2.aspx pages (Webform, .NET 3.5) I have this code, in the

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On pippo.aspx and pippo2.aspx pages (Webform, .NET 3.5) I have this code, in the Page_Load :

Response.Write("Result: " + Page.PreviousPage.Request["idconcorso"] + "");

Well, I call pippo.aspx, and the result is Result:.

Than, I call from pippo.aspx the page pippo.aspx?idconcorso=1234 , and I aspect the result is again Result:, but in fact it print Result: 1234.

Than, I call from pippo.aspx?idconcorso=1234 the page pippo2.aspx, and there I aspect Result: 1234 , but in fact is Result:.

Where am I wrong?

P.S. when I say “call” I mean a simple <a href>

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1 Answer

  1. Editorial Team

    Your use of Page.PreviousPage isn’t correct.

    It is designed to be used with the Transfer method or cross-page posting.

    If the current page is being rendered as a result of a direct request (not a transfer or > cross-post from another page), the PreviousPage
    property contains null.

    Source: http://msdn.microsoft.com/en-us/library/system.web.ui.page.previouspage.aspx

    So making a direct page request as you’re doing won’t give you the values from the previous page.

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