go to the previous page.

[Premalm]

Hi Guys,

How do I go to the previous page in ASP.Net. I am not using javascript.
For eg I have an err page which I am calling from on all the pages in case of any error. So I want to implement a back button on the error page so that it goes to the page from which it was called.

Any ideas ? and no javascript

Thanks
Premal

 

[ca8msm]

Hmmm...I was going to say use the HTTP_REFERER servervariable but this will be blank if the user has been redirected to an error page.

What I think you may have to do is create a collection of previously visited pages.

There is a control at

http://www.eworldui.net/CustomControls/BreadCrumbTrail.aspx

that does something very similar.

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[tickko]

You could use a session variable to pass the redirect information along.

Heres a senerio:
You have an error on page 'a.aspx', so you redirect the user to a the 'err.aspx' page.

'a.aspx' Page

Private Sub ErrHandler(ByVal err as Boolean)
     If err Then
          ' Set the page that errored into a session variable
          Session("PageErrored") = "a.aspx"
          Response.Redirect("err.aspx")
     End If
End Sub

'err.aspx' Page

Private Sub btnBack_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnBack.Click
     If Not(Session("PageErrored") Is Nothing) Then
          Dim pErrd as String = Session("PageErrored")
          ' A session variable is shared within the browser, until either closed or cleared
          Session("PageErrored") = String.Empty
          Response.Redirect(pErrd)
     End If
End Sub

That should give you the ability to add a 'Back' button on your error page.

t