C# - Detecting If Referrer Was From A 301 Permanent Redirect?

Jul 8, 2010

I am doing a 301 permanent redirect from an old server to a new server. When the new server's page is hit I want to be able to determine whether the user comes from the old site and then react differently, i.e. instruct user to re-book mark the new page.

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Http - Make 301 Permanent Redirect?

Jan 21, 2011

how to make 301 permanent redirect in asp.net?

I have written code in Global.asax file but my web client says it is not working,

i have written follwing code in Global.asax file:

protected void Application_BeginRequest(object sender, EventArgs e)
if (HttpContext.Current.Request.Url.ToString().ToLower().Contains(
HttpContext.Current.Response.Status =
"301 Moved Permanently";

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Response.Redirect Not Populating Url Referrer?

Sep 17, 2010

I feel like i've done this a ton of times, but i can't for the life of me figure out what is going wrong.


protected void Page_Load(object sender, EventArgs e)
var r1 = Request.UrlReferrer; // null
var r2 = Request.ServerVariables["HTTP_REFERRER"]; // null


protected void Page_Load(object sender, EventArgs e)

If i type "/SingleSignOn.aspx" in the URL, it redirects to Default.aspx, but the referrer is null.

What am i missing here?

What im trying to do (this is a simplified example), is on any page, i will have some JavaScript to do the following:


Which, you guessed it, signs the user in, and redirects to the homepage.

But i need to build logic into that JavaScript to not redirect to the SingleSignOn.aspx page if we just came from there.

Does the referrer only get populated by actual link user clicks?

How can i do this then? I don't want to use QueryString because i dont want to see that in the URL.

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Permanent Redirect Legacy Routes For Static Files In MVC?

Jan 12, 2011

Our old ASP.net site stored static images in a sub directory on the root called /images.

Our new ASP.net MVC site stores these images in the new layout of /Content/Images

I've changed all the pages in the site to cope with the new folder structure, but I'd like to set up Permanent Redirects from the old static images to the new location.

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Make Permanent 301 Redirect Work When There Are Parameters In The Query String?

Jul 22, 2010

I moved some of my old asp pages to new aspx website. In all of the old pages i used (for file example.asp):

Response.Status = "301 Moved Permanently";

The problem is that when the page domain.com/example.asp?param=value&param2=value2 is requested - the redirect ain't working...

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Redirect - Detecting Requests From Mobile Browsers?

Apr 16, 2010

I have an existing web site and I would like to create a mobile version of it that is more suitable. For instance, the main site uses drop-down menus and we all know those are quite the fail on mobile devices.I would like to redirect to my mobile version (it will be a subdomain of the current site) if I detect a request from a mobile browser. So when they Google something and come to my site, they will automatically see the mobile version (just like Wikipedia).Does ASP.NET provide an easy way of doing this

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Web Development - Redirecting Old Asp Files To New Aspx Files (Permanent Redirect, SEO)

Jun 28, 2010

I upgraded my site from asp to asp.net.This means that all of my previous asp files became obsolete.I don't want to lose my Google Ranking of the old pages.

What is the proper way to redirect?I tried to catch all of the old asp pages is my 404 and then to:

if Request.QueryString("aspxerrorpath").contains("index.asp") = true then
Response.Status = "301 Moved Permanently"
Response.AddHeader("Location", "http://www.domain.com/index.aspx")
end if

but it doesn't catch asp pages, only aspx.

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Permanent Redirect From Old .net Pages/site To PHP Pages/site

Jan 29, 2011

I picked up a new-to-me client who had a site built in ASP.net (which I do not host).I converted the site to PHP, which worked fine.I want to set up redirects for all the pages he had in the old site (it was a small site, so there was only 8 pages).As an example, the ASP.net url for the Contact page was www.domain.com/Contact - it is now www.domain.com/Contact.php (and so on).

For 301 redirects from one PHP page to another I normally use the .htaccess file:

Options +FollowSymlinks
RewriteEngine on
#custom redirects
rewriterule OldPage.php http://www.domain.com/NewPage.php [R=301,L]
#end custom redirects

What can I do to redirect these ASP.net pages to the new PHP pages?They are all static pages with no dynamic content.

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C# - Keeping Basket More Permanent?

Feb 22, 2011

I need to keep my basket more permanent I have two options and I want to choose the best one.

I have eCommerce web site application in asp.net and there is a basket include products which are selected by users before, so options:

1- keep basket in database (consider the cost and time to store and retrieve information)
2- store my basket in Cookies (I don't know what the implementation is)

I couldn't use session because it is not permanent and clear by closing browser.

My goal is : when the user close the IE for 1 day or 2 days make ability to remember all products that already added to basket.

In addition, my basket is store in hash-table now, for example : {1:4055,2:4588,...} they are ID and product code(keys). they are all save in a hash table.

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Getting Referrer Url On DLL?

Mar 21, 2011

Am building an dll which contains a function called geturl(Uri myuri), Uri as parameter. Basically i want to get the url of the page which calls this function(function is located on DLL). I have used the below code, but am not sure the page url can be overrided //In default.aspx //class declaration myclass mc = new myclass(); Uri ur = Request.Url; string str = mc.geturl(ur) //In DLL public string geturl(Uri myuri) { Uri MyUrl = myuri; string requrl = MyUrl.AbsoluteUri.ToString(); return requrl; } So my question is can the Uri on the default.aspx be assigned with custom url as [URL] instead of http://localhost/test/default.aspx

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Setup Some Permanent Redirects For .asp To Aspx Pages?

Mar 22, 2010

Our old site is in Classic ASP, and we know there are many people who have pages bookmarked. The new pages will be written in .Net.I thought of url rewriting (overkill?), but I'm not sure how to set that up (if this is the best way, I'll need some links to tutorials for using it in this specific manner. I've seen it used by never done it myself)What is the best, most efficient way setup some permanent redirects for these .asp to aspx pages?

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Web Forms :: Restrict Page To Certain Referrer?

Mar 30, 2010

I have a page which I only want to be accessable via a certain other page.Example, PageTwo.aspx can only be accessed via PageOne.aspxAll other referrers redirect to asp.netCan this be done in asp?

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C# - Getting Only The Referrer Page Not Complete Address?

Jan 22, 2010

I am using C#. Below is my sample code.

private void Page_Load(object sender, System.EventArgs e)
string str = Request.UrlReferrer.ToString();
Label1.Text = str;

The result in Label1.Text is http://localhost:82/data/WebForm1.aspx.Now I want the result "WebForm1.aspx" in Label1.Text

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Creating A Mock URL Referrer In MVC For Unit Testing?

Feb 10, 2010

I'm currently testing my application and am stuck on trying to figure out how to create a custom fake URL referrer. I've tried to hard code it, but am getting an error that it is read-only. Here is what I've tried so far:

fakeController.HttpContext.Request.UrlReferrer.AbsolutePath = "http://www.yahoo.com";
as well as,
fakeController.Request.UrlReferrer = "http://www.yahoo.com";

I've searched the web for some ideas on how to create a fake/mock URL referrer for my fake controller, but have had no luck.

Note: I'm using Visual Studios built-in unit testing facilities.


I would be more than willing to use any other unit testing system outside of Visual Studio, unfortunately here at my work we are only allowed to use Visual Studio's built-in system, so I gotta work with what I've got.

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Restrict Access To Web Site Based On Referrer, Cookies Or Something Else?

Feb 22, 2010

We have a scenario whereby we are hosting an ASP.NET MVC web site on behalf of someone else.The customer in this case wants us to restrict access to the web site, to those users who have logged in to their main portal. They should then only be able to get to our web site via a link from that portal.At this point I'm not yet sure what technology or authentication mechanism the 3rd party are using but just wanted to clarify what the possible options might be.If we call our hosted site B, and their portal web site A,as I see it we could:Check the referrer for all requests to B, unless they've come from A they can't get inCheck for a specific cookie (assuming A uses cookies)

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State Management :: Get The Calling Url Referrer From A Secure Site?

Jul 14, 2010

I need to get the calling page url referrer and host name. I works for me if the calling pages are within the same network. When a page is called from an internal site that are outside of my network, I got the following error:

Object reference not set to an instance of an object.

It failed on this line:

string userURL = Request.UrlReferrer.ToString();

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C# - How To Simulate Http Request Using WatiN With Specific HTTP Referrer And Query String

Dec 6, 2010

When I use WatiN to go to a specific web page, how can I fake the HTTP referrer with a query string (i.e. request is from google search with query string q=search_term)? So I can verify that the response header has the 301 redirect for specific referrer URL.

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How To Retrieve The Referrer Page Url Once A Custom Error Page Is Returned

Sep 9, 2010

I'd like to capture the http referrer url following the rendering of a custom error page.I have this set in my web.config

<customErrors mode="On">
<error statusCode="500" redirect="/StaticError.aspx" />

In the OnLoad(EventArgs e) event -- I'm trying to do this, but it appears to be too late.this.txtReferrer.Text = Request.UrlReferrer.ToString();Is it possible to capture the referrer url?

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Detecting Javascript During Login Of An MVC App

Jan 24, 2011

My LogIn action originally looked like this:

return new RedirectResult(nameValueCollection["ReturnUrl"]);

But, I would like to know whether the client has JavaScript enabled before the home page loads, so I changed it to this:

return View(new LogInViewModel { ReturnUrl = nameValueCollection["ReturnUrl"] });

And send the following view instead of the instant-redirect:

@model Obr.Web.Models.LogInViewModel
Layout = null;
string noJSReturnUrl = Model.ReturnUrl + (Model.ReturnUrl.Contains("?") ? "&" : "?") + "noJS=true";
<!doctype html>
<title>Loggin in...</title>
<meta http-equiv="REFRESH" content="1;url=@noJSReturnUrl">
<script type="text/javascript">
window.location = "@Model.ReturnUrl";
Loggin in...<br />
<a href="@noJSReturnUrl">Click here if you are not redirected promptly.</a>

The idea is that if the user does not have JavaScript enabled, they see a brief loading message, and the home page loads after a second. If JavaScript is enabled, the page reloads instantly. In the future I could even post to the server the dimensions of the viewport and such. Does this look like it would work? If the window.location command takes longer than a second to run, will it be interrupted by the meta refresh, or does it block that refresh? I am hoping the latter, so I don't need to increase the delay for those non-js people.

I figure my new way adds a little extra weight to the payload of the redirect, but it's not an extra round-trip or anything, is it? The redirect happens anyway, does it not? Update: I neglected to mention a very important point. I do not actually have control over the login screen itself, only the page it posts to. This code is part of a product that relies on an external authentication mechanism.

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C# - Detecting Non Mobile Browsers

Sep 17, 2010

So I'd like to redirect mobile users to a different page. But instead of trying to detect any number of mobile browsers, I'd just like to see if the user is using IE, Firefox, Safari, Chrome, or Opera; all other users go to the mobile site. My biggest problem is detecting regular Safari from mobile Safari.

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Detecting Web Browsers' Versions?

Dec 19, 2010

i'm programming an application where an action is done if i access with a version equal or higher than other and another action if i access with a lower version; but the problem is that the lines to indicate the versions doesn´t work. The code is the following:


As you can see, an action should be done if the version is the 9.0 or higher and other if it is lower, but these lines doesn't work and only works the detection of the web browsers (no the versions of them, action that doesn't works).

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Detecting An Expired Session From Php?

Feb 23, 2011

I'm developing an extra section to a web app that's written in asp.net, but in php - it's mostly done (the two parts don't really communicate with each other outside of a database - the integration is mostly just cosmetic.)

The only issue I have is detecting from the php part when the .net session has expired so that it logs the user out and redirects to the login page.

I believe the asp.net application is compiled, but either way I'm not allowed to alter it so I was thinking maybe the best thing to do would be to make a very small/simple aspx page that outputs true or false which I could call using curl from php (and passing the browser's cookies along.)

Would this even be possible? I'm not sure how session security works on asp.net eg whether one .net application can read another's session variables, but if it's anything like php then it'll be possible.

mypage.php --curl--> checksession.aspx --|
| |
<----------- true / false <---------------

So mypage issues a GET (with cookies from browser) to checksession using curl, checksession simply returns a true or false (or something like that) and mypage redirects to the site's login page if that's false.

The authentication for the php side is already sorted out and is separate to this issue.

So really, what I need to know is can I have just a simple .aspx file that does this check, and if so where would I go to to find out how to program such a simple page?

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Detecting If User Closes The Page?

Jun 7, 2010

Is there a way to detect if the user closes the browser/popup page? I am trying to implement a chat functionality by when the user closes the browser/page, I will update the flag in the database from active to not active. But I cannot seem to find a better way to handle that besides from detecting if the user closes the page.

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Detecting And Closing Frames Using Javascript

Jul 16, 2010

I'm working on an ASP.NET web application. There's a bill page which has two links to different pdfs of the same bill. When you click on one of the links it takes you to a ViewPDF.aspx page that shows the pdf. There's also an option to view both in a split screen so that you can compare them. When you click on this link it takes you to BillSplit.aspx which has a frameset and two frames that both point to ViewPDF.aspx. This all works perfectly.

The problem is that if an error occurs while pulling up the pdf. The application has an error page that has a few links back into the application. If you use one of these you can go back into the app and continue but now inside the frame. The URL still says BillSplit.aspx but the application is completely unaware of this since frames are HTML elements not asp.net controls.

What I would like to do at this point is detect that you've returned to the application and close the frame you aren't using. Essentially I'd like to redirect you away from BillSplit.aspx and to the page you're actually requesting. I'm pretty sure this would need to be done in Javascript either on the BillSplit page or on the pages that you go to later. So I guess what I'm asking is, is there a way to ensure that the BillSplit.aspx page and it's two frames point only at ViewPDF.aspx?

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Detecting If Site Is Being Accessed By A Robot?

Feb 15, 2010

I have some geo targeting code whcih I want to behave in a particular way if the site is being spidered by a robot e.g. google etc.

Is there any way to infer this?

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