Going back to previous page

Question

I have a back button on most of my pages. when user click on the Back button, I want them to be redirected previous page in their history.

i am having the following issue

Request.Referrer won't work with the following example user browser from page1.aspx -> page2.aspx -> page3.aspx

when user navigate from page2.aspx to page3.aspx, getting Request.Referrer would be page2.aspx which is correct, when user click back on page3.aspx, I used Response.Redirect to the referrer URL, which is page2.aspx. but now on page2.aspx, the referrer would be page3.aspx. so if pressing back here would cause the page to be redirect to page3.aspx which is wrong.

what I wanted is the following

1. the back button to works similar to the browser back
2. history.back is empty to redirect to homepage
3. if the URL in history.back does not belong to my site, user to be redirected to homepage also.

Answer 1

Hi @Anonymous ,
According to your description,I think,you could session your UrlReferrer. And you only need to check if the session is null.
Page2:

protected void Page1Button_Click(object sender, EventArgs e)  
{  
 Session["url"] = Request.UrlReferrer.AbsoluteUri.ToString();  
 Response.Redirect("page3.aspx");  
 }  

Page3:

protected void btnBack_Click(object sender, EventArgs e)  
{  
    if (Session["url"].ToString() != null)  
    {  
         Response.Redirect(Session["url"].ToString());  
    }  
    else  
    {  
      ......  
    }  
}  

Best regards,
Yijing Sun

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