C# - How Reliable Is The Request.Browser.Cookies Property
Mar 11, 2011
The Request.Browser.Cookies property (of type bool) attribute stores information whether client's browser supports cookies and whether or not they are enabled.How reliable is the property Request.Browser.Cookies? Is it guaranteed to be correct ? Or should I rather implement redirection technique suggested by Software Monkey in this question?Please note: This in not a question "are cookies reliable" ? This is a question: "Is the information whether users browser accepts cookies reliable?"
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Mar 16, 2010
I know I can use Request.Browser.IsMobileDevice.
But does anyone know how it works, and if it is reliable and up to date?
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Nov 23, 2010
I have been experimenting with code that will clear all of the cookies in an HttpContext.Response.Initially, I used this:
DateTime cookieExpires = DateTime.Now.AddDays(-1);
for (int i = 0; i < HttpContext.Request.Cookies.Count; i++)
{
HttpContext.Response.Cookies.Add(
new HttpCookie(HttpContext.Request.Cookies[i].Name, null) { Expires = cookieExpires });
}
this will error with an OutOfMemoryException because the for loop never exits - each time you add a cookie to the Response, it also gets added to the `Request.
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Apr 1, 2011
I know that if I have set a cookie on a previous request, it will show up in my Request.Cookies collection. I want to update my existing Cookie. Are the cookies from my Request.Cookies collection already copied to my Response.Cookies collection? Do I need to add a new cookie with the same key using Response.Cookies.Add(), or do I need to use Response.Cookies.Set()?
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Sep 21, 2010
I am using asp.net with c#.My issue is this that I am setting cookies to check that the same user is returning or not but user are returing from the same machine with different browser. Is their any alternate I would know that same machine user had visited my site.
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May 12, 2010
how to remove cookies from browser in asp.net c#
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Jun 11, 2010
I set up my 1.1 and 2.0 applications to run on the same website (in different app pools) But the application written in 2.0 code cannot read a cookie on the request coming from a different system.Similar code reads the cookie on the 1.1 website.If I deploy my 2.0 application on a different machine, the code works fine and gets the cookie. Here's the code:
IsNothing(Request.Cookies("HRWebSession"))
In 1.1 application the above returns false, and in 2.0 above returns true. On debugging and watching the value of response,cookies, I dont see the cookie. Since the same application works fine on another server, I am assuming there is some error in my setup. I am using IIS 6 on W2003 r2.
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Dec 10, 2010
I have a web application (SnapshotServer) which uses a WebBrowser control to take a snapshot images of a web page.
I use a WebBrowser control within SnapshotServer to navigate to a entry page of a secure web application (ImageHost) and then redirects me to my required page.The ImageHost application is protected by FormsAuthentication, which uses cookies. The entry page I navigate to takes care of logging me in - which will create an Auth cookie.
Once a response is generated from the ImageHost, I convert the result within the WebBrowser control to an image.
Issue:
When I run SnapshotServer on my PC (Windows 7, IE8), using IIS7, and navigate to ImageHost on my development server (Windows 2008 R2, IE8), the result is as required - I'm logged into ImageHost and redirected to the page I want an image of. When I run SnapshotServer on any Windows 2008 R2 server, using IIS7, and navigate to ImageHost on my development server (Windows 2008 R2, IE8), the result is not as required - ImageHost fails to log in - so my image is of the login page. The reason it fails to log in is that it isn't creating an Auth cookie.
So I'd like to know if anyone can tell me why the WebBrowser control, when run from a Windows 2008 server, cannot create cookies.
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Jun 9, 2010
I'm building a greasemonkey script to make posting to craigslist a lot easier for our clients.
Basically the flow is this:
User logs into our system (established authentication cookies with asp.net)User navigates to a section on our site called "CraigsList". If they have the greasemonkey script installed it automatically opens up craigslist in a new tab.
The greasemonkey script then does a request back to our site at [URL] to retrieve a list of available items to be posted to craigslist.
This is where it fails because the request to [URL] is not including any of the authentication cookies. I'm not sure if it doesn't include the cookies because the request originates from [URL] and not [URL] or what. I know it's an authentication issue because looking at it in fiddler it returns a 302 and redirects to the login page.
Here is my request:
[code]....
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Mar 3, 2010
I have integrated Third party advertise module in my website. their domain s "http://rotator.adjuggler.com/".they read cookie from this domain and display advertise based on cookies value. now I want to set cookies on this domain from my website.though this is not possible. they have provided url to set cookies.http://rotator.adjuggler.com/servlet/cookie?action=set&name=test&value=1&maxage=2592000we can set cookies on their doemain by calling above ur.Problem:1) we can't make xmlHttp request because this is cross-doamin link.2) we can't use jquery because it uses xmlHttp as native implementation.3) i have tried to set above url in <img src="..." > and <script src="...">. both not working.but when i paste above url in address bar it works.can anybody have idea how to call above url from Code.
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Mar 10, 2011
What will happen if cookies are disabled in my browser, will the session(sessionid and session variables) still be created?
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Sep 2, 2011
It's weird, my firefox has cookies disabled, yet I am still able to retrieve the cookie.
Code:
protected void Page_Load(object sender, EventArgs e)
{
Response.Cookies["a"].Value = "1";
}
protected void Button1_Click(object sender, EventArgs e)
{
Label1.Text = Request.Cookies["a"].Value.ToString(); //it returns value
}
Why is this?
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Apr 3, 2011
This thing has just came to my head and I wanna share it.Note : I could easily test it but I am being lazy here to see if anybody has ever experienced something like that before.Let's assume that I have a web site which built-in membership structure of asp.net has been implemented on. What will happen to asp.net membership if the client browser blocks cookies? Does framework throw an exception when a user tries to log in or do something else?
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Jan 16, 2011
if any body open web site if any one on client side clear the cookies than how to open the Login.axps page
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May 27, 2010
I want to create a custom attribute to check if the browser has cookies and javascript enabled. I'm guessing I would create a ActionFilterAttribute that would redirect to a controller action to load a page to check cookies and javascript on the client side. If they are enabled then it would redirect to the desired action, otherwise display an error message. Is this a correct approach or is there a better way to do this?
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Jun 4, 2010
As we know that closing a browser will delete cookie if the cookie does not set an expired date. However, I want to set an expired date to all of my cookies and also delete them when browser closed.
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Aug 5, 2010
I am working on a web application. Some images are calling a web provider, which renders the picture, and send it to the client (the html looks like img ... src="/WebProviders/ImageHandler.ashx?.../>).The problem I have encountered is that both IE8 and Firefox 3.6.8 fire the request to the handler more than once, yet not consistently. I could not trace a pattern (the same image sometimes cause one and sometimes several requests).
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Mar 24, 2010
To prevent duplicate requests (i.e. pressing F5 right after clicking a command button), I've setup my page base class to ignore the request if it's detected as a duplicate.
When I say 'ignore' I mean Response.End()
Now I thought I've seen this work before, where there's an issue, I just Response.End() and the users page just does nothing. I don't know the exact circumstance in which this worked, but I'm unable to repeat it now.
Now when I call Response.End(), I just get an empty browser. More specifically, I get this html.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=utf-8"></HEAD>
<BODY></BODY></HTML>
I setup the following test app to confirm the problem is not elsewhere in my app. Here it is:
Add the following to an aspx form
<asp:Label ID="lbl" Text="0" runat="server" /><br />
<asp:Button ID="btnAdd1" Text="Add 1" runat="server" /><br />
<asp:Button ID="btnAdd2" Text="Add 2" runat="server" /><br />
<asp:Button ID="btnAdd3" Text="Add 3" runat="server" /><br />
And here's the code behind file
using System;
namespace TestDupRequestCancellation
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Init(object sender, EventArgs e)
{
btnAdd1.Click += btnAdd1_Click;
btnAdd2.Click += btnAdd2_Click;
btnAdd3.Click += btnAdd3_Click;
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
CurrentValue = 0;
else if (Int32.Parse(lbl.Text) != CurrentValue)
Response.End();
}
protected void Page_PreRender(object sender, EventArgs e)
{
lbl.Text = CurrentValue.ToString();
}
protected int CurrentValue
{
get
{
return Int32.Parse(Session["CurrentValue"].ToString());
}
set
{
Session["CurrentValue"] = value.ToString();
}
}
void btnAdd3_Click(object sender, EventArgs e)
{
CurrentValue += 3;
}
void btnAdd2_Click(object sender, EventArgs e)
{
CurrentValue += 2;
}
void btnAdd1_Click(object sender, EventArgs e)
{
CurrentValue += 1;
}
}
}
When you load the page, clicking any button does what is expected, but if you press F5 at any time after pressing one of the buttons, it will detect it as a duplicate request and call Response.End() which promptly ends the task. Which leaves the user with an empty browser.
Is there anyway to leave the user with the page as it was, so they can just click a button?
Also; please note that this code is the simplest code I could come up with to demonstrate my problem. It's not meant to demonstrate how to check for dup requests.
EDIT: Another change that will allow me to achieve the same results would be to disable all my event handlers.
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Dec 16, 2010
I'm using httpwebrequest but I have a problem when I execute the codes. Like this..in title english = browser not supported. how can I skip this protection
this is a facebook protection.
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Jan 22, 2010
On a ASP.NET MVC should the error pages be the most independend possible?
I mean be full HTML code with no relation to databases, render actions, render partials, master pages, etc?
There would be only the actions to return the, for example, NotFound and UnknownError views and then place those url in Web.Config custom error section.
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Apr 9, 2010
I am working with three machines. The printer is shared and it is attached to one machine. Second machine contains published pages and on third machine I am developing the application. I have an application which uses combit's list & label for label printing. I am able to print label from the project. Means while debugging the project, printing works fine without any problem(from the development machine). But when I deploy(publish) this project in IIS by making virtual directory and then try to run, it does not work(on deployment machine). The browser freezes and does not show any error as well. After closing browser and running the same page takes a lot of time just to load the page.(not even shows the complete GUI, just white page...) Eventually I have to restart the IIS. Does anybody have idea regarding this?
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Sep 2, 2010
I have an ASP.NET page and I am trying to quickly match the validation controls that are tied to a particular textbox (text input) using a jQuery selector. The validation controls render as a span and the "controltovalidate" property renders as an expando property. Here is a test example:
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
<script type="text/javascript" src="jquery.js"></script>
</head>
<body>......
The problem: the ml_test() function shows 1 in Internet Explorer 7 (as expected), but shows 0 in Firefox 3.6.8. I tried adding additional controls, but in Firefox it consistently doesn't work.
I discovered this post that shows the use of an ampersand in the selector like this [@expando=value], but when I try this syntax, jQuery 1.4.2 throws an error.
Is there a cross-browser way to select expando attributes, and if so, what is the proper syntax?
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Feb 23, 2010
Is the HttpSessionState.SessionID Property unique per browser process / tab?
That is, does each tab in each process have a unique Is the HttpSessionState.SessionID Property unique per browser process / tab?
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Jul 26, 2010
There is one page which is actually a streaming to The Axis IP camera which spits MJPEG output.It requires user to log in with the user name/password promp on browser .I am using this stream to show video directly on a web page.It shows video correctly but asks user to provide correct user name and password set for the camera,I tried to logging in to this camera on server side using HTTP requests and then I realized I authenticated server request not the browser the end user is using.
So what I want is a method server side or client side, that can allow me to log-in to camera automatically when my end-users visit this page.I am using asp.net with c# 2005
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Apr 19, 2010
We have a page that is opened in the child window using window.open. Now the user will copy the child's window Url and copy-paste it in the browser. We need to restrict this scenario. How should we do this. I mean I need to know in my page load method whether the request has come from window.open or whether the user copy-pasted the Url on the Browser's Address bar.
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