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go to url of page I just came from

Posted on 2013-01-11
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Last Modified: 2013-01-11
In asp.net c# how do I programmatically go back to the page I just came from?

On any page, how do I obtain the URL of the page?  (what is in the address bar)
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Question by:knowlton
2 Comments
 
LVL 11

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by:
Guru Ji earned 500 total points
ID: 38768639
As your question is vague in terms of what url, so I will answer accordingly

If you know the page you came from then you can write a button click code to go to that particular page as follows

protected void Button1_Click(object sender, EventArgs e)
{
     Response.Redirect("Page2.aspx");
}

But if its going to be random pages like google, yahoo or anything then you can get the referrer of the page and redirect accordingly like below
// static variable
static string prevPage = String.Empty;
 
protected void Page_Load(object sender, EventArgs e)
{
     if( !IsPostBack )
     {
         prevPage = Request.UrlReferrer.ToString();
     }
 
 }
 
 protected void Button1_Click(object sender, EventArgs e)
 {
      Response.Redirect(prevPage);
 }


and In order to get URL from the address bar its just one line

Request.RawUrl.ToString();

Hope that helped you
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LVL 5

Author Comment

by:knowlton
ID: 38768724
This is what I meant, which I think you did answer above:

Page A:

            string thisPage = Request.UrlReferrer.ToString();
            Session["afa_parent"] = thisPage;
            Response.Redirect(***Page B url***);


Page B ( on click "cancel" ):

            string prevPage = Session["afa_parent"].ToString();
            Response.Redirect(prevPage);
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