I am trying to get the QueryString value like this Request.QueryString("SYSTEM") from a UrlReferrer. I see i can use this Request.UrlReferrer.Query() but it doesn't allow me to specify the exact parameter I could parse the Query() value, but I want to know if it is possible to do something like this Request.UrlReferrer.QueryString("SYSTEM")
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in my web application Request.UrlReferrer is null. how can i set UrlReferrer ?
View 1 RepliesHere's the scenario, we've built a url shortener (that we use only to shorten urls for Twitter to our website), and we also track the number of times a url has been clicked. So, for example.. the url might be something like "http://ourshortdomain.com/x9Mr"
Now, in many cases, we see as many as 1000 or 2000 clicks per shortened url, but the referrer is almost always null. How can this be, if the only place we're handing out that shortened url is on Twitter? Shouldn't all the url referrers be coming from Twitter?...
I am developing a .net website using Visual Studio 2008.
Now this webpage should be open only from link available on other website. User should not be able to type the URL directly in browser and should not be able to open this way directly. When user logs in to other website, there is a link for my website and when user clicks on that link, then only my website should be opened up.
Now, I can not use "Request.UrlReferrer" because it is not 100% correct way as there are many ways that URLReferrer can be blocked by browser or by some antivirus or etc, so I cannot use URLReferrer on my webpage to check from where this page is opened up.
Now my question is what is the best way to check on my webpage that my site has been opened up only from that source? I can also pass some querystring from that website but I am not sure how can I make sure that my webpage opens up only from that source, not when user directly types URL in the browser.
I came upon an interesting discussion with my team around the use of HttpRequest.UrlReferrer and wanted to solicit feedback from the community. According to the W3C spec:
The Referer[sic] request-header field allows the client to specify, for the server's benefit, the address (URI) of the resource from which the Request-URI was obtained (the"referrer", although the header field is misspelled.) The Referer request-header allows a server to generate lists of back-links to resources for interest, logging, optimized caching, etc. It also allows obsolete or mistyped links to be traced for maintenance. The Referer field MUST NOT be sent if the Request-URI was obtained from a source that does not have its own URI, such as input from the user keyboard.as input from the user keyboard.
The Request.UrlReferrer object does the work of converting referral strings that contain well formed URIs to an object with properties on every request. According to our logs there are requests that come in that contain invalid data in the referral such as:
localhost
app:/BeamBackTest.swf
app:/multtiple.swf
app:/AFriendFeed.swf
ALToolBar
app:/index.html
mhtml:file://C:Documents+and+SettingsUserDesktoporacleWhat+is+a+View+in+Oracle+-+Stack+Overflow.mht
Using Request.UrlReferrer would mean the above cases would be NULL. Is it better to discard the invalid data based on the W3C spec by using Request.UrlReferrer or preserve it by using Request.ServerVariables["HTTP_REFERER"] even though the data may be interesting, but potentially useless.
I want to use UrlReferrer after the user has signed-in.
Can UrlReferrer also refer to a webpage outside of the web project? .. this is not what I want...
I am working on an app where users are only allowed access if they click through from certain URLs. I.e. I need to authenticate by using the referral url and I am using
Request.UrlReferrer to achieve this.
I am guessing that the Request.UrlReferrer can be tampered with by malicious users to gain access...
What I am trying to solve here is to check for what is previous page's url and compare it. If it is login.aspx then I want to display an WelcomeNote() message. Any help would be deeply appreciated. Here's the codes.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Request.UrlReferrer IsNot Nothing Then
I am redirecting between two pages, when I use a hyperlink I get the Page1 in the UrlReferrer field, but using Response.Redirect gives it null.
AFAIK both of them act similarly for a redirection.
i have a problem in my asp application . Im trying to protect the path for my application using this code :
Uri t = Request.UrlReferrer;
I have the following code in 'main.cs' file where I am checking for a condition
protected void Page_Load(object sender, EventArgs e)
{
if (Request.Form.Get("task") != null && Request.Form.Get("postToURL") != null &&
Request.UrlReferrer.ToString().Substring(0, 31).Equals("http://cs.astra.co.in:4040"))
{
ASCIIEncoding encoding = new ASCIIEncoding();
<SO ON>
Instead of checking for the URL [URL] in 'main.cs', Can I check for the same condition in the 'web.config' file ? If so, How can I do that ?? Is there any way to transfer the part -- Request.UrlReferrer.ToString().Substring(0, 31).Equals[URL] -- into the 'web.config' !!
[Code]....
How can i use querystring for this-
Here in below code i have used querystring for sending imagename from this page to another page. Now i just want that with this imagename in also want to send span element's text with same querystring.How can i achieve this?
[Code]....
The following code works well as long as I pass a querystring value to the datalist.
Private Sub BindGrid()
Dim id As Integer = Integer.Parse(Context.Request.QueryString("id"))
Dim strConnString As String = ConfigurationManager.ConnectionStrings("Conn").ConnectionString
Using con As New SqlConnection(strConnString)
Using cmd As New SqlCommand()
cmd.CommandText = "select Id, Name from tblFiles where Id=@Id"
[Code] ......
However, the page errors with the message "Value cannot be null." if I don't pass a value. I know that DataList does not have an EmptyItem Property like a Gridview control. I do not want the page to error if I don't pass a value. Need info to deal with empty values in a datalist.
Most websites have pointed me to this code to use:
<FooterTemplate>
<asp:Label ID="lblEmpty" Text="No Result" runat="server"
Visible='<%#boolean.parse(([b]list[/b].Items.Count=0).ToString())%>'>
</asp:Label>
</FooterTemplate>
The 'list' throws an error. The error is "Too few type arguments to 'System.COllections.Generic.List". I am not sure if the code is written in C# and that is what is causing the error. It seems that it should work but I can not figure out the 'list' error.
I'm intermittently seeing this exception being thrown:
A potentially dangerous Request.QueryString value detected
However when I look in the IIS logs I can see that the request that failed has no querystring logged against it.
How could this be? Are "dangerous" query strings being stripped from the log or something?
Encrypt request.querystring and Descrpt request.querystring
View 1 RepliesBoth returns the incoming url, Just to know When to use Request.UrlReferrer and when Request.ServerVariables["HTTP_REFERER"] and why?Currently, in one of my application Urlreferrer is working in my local machine but its not working when went live?Additionally, its most appreciable if anyone can guide any alternative of both Urlreferrer and HTTP_REFERRER?
View 1 RepliesI have a url like this :
[URL]
I want to get [URL] from it . Can you tell me how can I get it ?
I use Request.QueryString["var"] to pull the value of http://test.com/test.aspx?var=test into a stringthe same thing doesn't work for test.aspx#var=testhow can I get it from that version of a querystring?
View 3 RepliesADO.NET and have a query about reading a unique data value from a table.
PHP Code:
<%@ Page Title="" Language="C#" MasterPageFile="~/Dorknozzle.master" AutoEventWireup="true" CodeFile="BlogEntry.aspx.cs" Inherits="BlogEntry" %>
<%@ Import Namespace = "System.Data.SqlClient" %>
[code]...
this is my problem
i have a link like this .
[URL]
its fine with the above link
but if we delete the querystring part page should be redirected.
[URL]
Im having problems passing a value through a querystring that is split by a '&' eg :
?value=Apples & Pears
Only the "Apples" part is being picked up by response.querystring("value"). I have other values which are split by a space eg:
?value=red shoes which I can successfully extract "red shoes".
How can I add values to querystring?
I'm trying to do this:
String currurl = HttpContext.Current.Request.RawUrl;
var querystring = HttpContext.Current.Request.QueryString.ToString();
var PrintURL = currurl + (String.IsNullOrEmpty(querystring)) ?
HttpContext.Current.Request.QueryString.Add("print", "y") : string.Empty;
But I keep getting this error:
Cannot implicitly convert type 'string' to 'bool'
all i'm trying to do is get current url and add ?pring=y to querystring
I have trouble using 2 access dbs.
From gridview i use querystringparameter "title" to open new page and show in detailsview the selected data. It get it right. In the detailsview page i want to show also data from another db wich also have "title". Since i use querstring parameter for the first data, how can use the same querystring for the second?
[Code]....
how to get the url without querystring values in asp.net?
View 1 RepliesThe first time the user navigates to my page there will be no query string in the url.
The page will display them 10 posts, and at the bottom there will be a 'next page' button that will call the same page but this time pass the page a pageNumber in a query string and the next ten posts will be displayed.
how can I detect if there is a QueryString in the url so that only when the page is called by the 'next page' button and there is a QueryString is my code exicuted?
