Is there a way to redirect my application to a webpage after checking the browser version first?
I'm using C# to run my angular app and the index.html is loaded by default, but is there a way to control that ?
E.g : if my browser is IE load wrongBrowser.html otherwise load index.html (the default one)
Note that i dont want to redirect my page because i want to keep the orignal url : ex localhost/api/search=text. If i do a redirect, it will overide my url. So i just want to load the html content
Im using C# with visual Studio for the server side
The first page of your app will have to load as it needs to be able to determine the browser specs. Only then can you then redirect to another page based on that knowledge.
I have never used Angular JS neither Angular with C#, but from personal knowledge I know you can "redirect" without changing the url, using a XML request in vanilla javascript (maybe you can place this somewhere):
var request = new XMLHttpRequest();
request.addEventListener("load", function(evt){
document.write(evt.target.response);
}, false);
request.open('GET', 'a.html', true),
request.send();
Now what this does is simple, we set variable request which is a XMLHttpRequest object, then we set an event listener for when it loads, after it loads we replace the code in the page with the targets code, we then set the url and send the request.
I have only used this for testing, so there might be issues that I don't know of, but it does import the html code in.
In C# you can do the following using Request.Browser:
if(Request.Browser.Browser.IndexOf("InternetExplorer")){
return View("wrongBrowser");
}
You have to use IndexOf due to the fact that most, if not all browsers return their version in their name too.
Here's a list of possible browser strings:
IE <= 11: InternetExplorer <numeric version>
Edge: Edge <version>
Safari: Safari <version>
Chrome: Chrome <version>
Opera: Chrome <version>
There are more, most of them will come under Chrome though. I will not go into much detail as you specified IE11 which is listed above. The above method is not really reliable for other, less popular browsers so keep that in mind.
Related
We have tried using selenium for testing, but it has numerous setbacks, delays and sudden crashes.
Jquery sounds a good alternative, but the challenge is how to jquerify every page load on the browser.
Brandon Martinez here has an example of how to add jquery to the console of chrome to jquerify a page:
var element1 = document.createElement("script");
element1.src = "http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js";
element1.type="text/javascript";
document.getElementsByTagName("head")[0].appendChild(element1);
we want that code to automatically be available in every browser page without the need to manually click a bookmark link on every page.
If we get around that then we can use C# code to:
Process.Start("chrome", #"target site");
and since jquery is already available for every page it will do the population and submit we want.
How can I automatically include jquery for every page that gets loaded on the browser? Is it possible to do that via a chrome plugin; jquery or C# code!? Is it at all possible?
I've decided to use Fiddler to modify response body before being displayed on the browser. Now I can jquerify all pages comes to the browser. Look at this link for a detailed example.
To begin, I should mention that I'm quite new to C# and ASP.NET 4.0. The solution to this problem may be elementary so don't hesitate to ask fundamental questions.
I've inherited an ASP.NET 4.0 application that failed our automated security test because of <page enableViewStateMac="false"> (not my fault). Of course, I turned it on. At that point a very specific pattern of behavior emerged:
1) I can navigate to the application landing page
2) attempting to click on any link leaving the landing page results in a "Validation of viewstate MAC failed..." error.
2a) the exception to this is that clicking on the link that takes me to the landing page (the page I'm already on) works just fine
I should mention that navigation to other ASPs occurs by way of Response.Redirect(...). I can successfully navigate to a page if I enter the url directly into the nav bar (http://dummyhost.com:12345/Enroll.aspx as opposed to http://dummyhost.com:12345/LandingPage.aspx and then clicking on enroll).
In the Page_Init() method of the master page, I'm setting:
Page.ViewStateUserKey = Session.SessionID;
If I comment out this line, I can turn on MAC and the application is perfectly happy. Can anyone illuminate what's going on?
The most likely cause is that some landing-page-specific data is being submitted to the server and persisting through the call to Response.Redirect, so the enrollment page tries to read the landing-page-specific data and fails the request since the data cannot be interpreted correctly.
Instead of using Response.Redirect, consider using ... directly in your markup when you want to generate a simple link. This will cause the browser to make a vanilla HTTP GET request to the specified resource, free of any current-page-specific date.
in order to corporate with external payment system, I need to respond with blank page with one word 'true' at the beginning.
I'm using Dotnetnuke 6 and c# .net 4.0 custom module.
I must work with data sent by them, and later put just at the beginning of page world 'true'. So I could somehow reset page and return null page with one word or insert it just at the beginning of the page (even before tag )
I cannot redirect to another page, it must be the same one.
Any ideas ? Is it possible to obtain ?
If you haven't returned anything yet you can do Response.Clear(), Response.Write() and a Response.End() to end the request so nothing else is returned.
This sure sounds like a web service to me. I would either use DNN Services Framework. Or if it is really as simple as returning the word true, I would write an .ashx to do the job. The .ashx will not be run with other modules or as part of default.aspx, so you can easily control everything that is rendered in the response.
I've application that uses another web sites data so how can i get it because it uses some JavaScript functions to get that data and it not show in page view-source.
Check the NET tab in firebug, XHR and check the resource that is requested, and request the same resource.
Basically you have to render the webpage and ensure the javascript functions are run (evaluated). You could do this by "borrowing" their javascript files (by linking to them from your own page), but this may not work as you don't know what's in those files - they could be accessing DOM elements that you don't have in your page, or calling to other domains which may prevent them from working correctly.
The easiest way to show the same data is to just host the page inside an iframe on your own page. If you are looking to do this from a normal client application (i.e. not a web app) then you will need a browser control that you navigate to the target page. If the browser control is invisible you could then scrape values from it and show them in your app, although this is a very clumsy way to do it, and it's debatable about how ethical it is.
If you want the another web site view source use the HTTPWebRequest to get the response stream in c#.
I am working on a site which is programmed in C# .net. It uses a CMS called ADX Studio (a decision which predates my time there) which provides a shonky form of URL Rewriting (as far as I can tell it works by assigning an aspx page as the default 404 handler in IIS).
I have an web form which lives at a rewritten URL. I edited it so that the html form's action points back to the rewritten URL:
var u = new Uri(Request.RawUrl.Split(new char[1] { ';' }).Last());
userAdminForm.Action = u.PathAndQuery;
(kind of ugly but works based on what Request.RawUrl is on these rewritten URLs).
The "pretty" URL is something like this:
http://www.site.com/admin/user/edit/
On my development box (Windows XP/ IIS 5) when I initially tried POSTing back to URLs like this I got a HTTP 405 error. I worked around this by adding a script mapping so Aspnet_isapi.dll handles all (*) requests. And everything works fine on my development machine.
I just pushed my changes to the live server (Windows Server 2003 R2 and IIS 6) and the post fails silently. The page refreshes but all of my logic (from within an IsPostBack path in the code) doesn't get hit. No errors are displayed, it just doesn't work.
If I remove my code setting the .Action of the form then the postback works but it is posting to the ugly URL corresponding to the physical location of the aspx file rather than my page.
Am I missing a simple way to make this work? I don't want to be switching URL rewriting method or anything as this is a large legacy site and is unfortunately pretty dependent on ADX Studio so I don't want to do anything that will break that.
[edited because somehow the code above lost its code highlighting]
The issue is that the page's <form> tag is referencing the "ugly" url as the action. You can resolve that by completely removing the action tag from the form. Browsers will, by default, postback to the same page, ie. the "pretty" url.
This article explains how to accomplish an "actionless" form (~ two thirds of the way down) http://msdn.microsoft.com/en-us/library/ms972974.aspx
It seems like the problem is the same as it was on IIS 5. I can get it to work by doing the following in the IIS Manager:
Right click on the relevant website and select "Properties"
Choose the "Home Directory" tab
Click "Configuration" down in the "Application settings"
Click "Insert" next to the "Wildcard application maps"
Browse to the location of aspnet_isapi.dll (in my case: C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_isapi.dll )
Untick "Check that file exists"
Click "OK" back through the Russian doll of dialogs.
This is basically the same as the approach that I linked to in the question for IIS5. However, it's not optimal because IIS is running every request through asp (even static files). Which seems like it can only slow things down. I'd like to be able to specify that asp only needs invoking for HTTP POST requests at least.
The weird thing is that IIS5 gave a HTTP 405 error when POSTing to an extension without a registered ISAPI extension but IIS6 just fails silently. And the page is being run through IIS (I can debug with a breakpoint in the Page_Load function) but IsPostBack (and IsCrossPagePostBack) don't get correctly set. Could it be related to the view state? Is there any alternative to my solution described above?
I've come to what I think is an optimal solution for this problem. It turns out that ADXStudio CMS does use the default 404 rule to do some form of URL rewriting. This has a problem with http POST:
when IIS initially executes a custom
URL on a 404 error, it changes POST to
GET, even if the client does a POST
request.
(thanks to elite brains' blog post about setting up IIS6 and ASP.NET MVC).
Rather than creating my own HttpModule I decided instead to use Ionics Isapi Rewrite Filter to rewrite my URLs. I then set the 404 error handler in IIS to the default. And I created this IIRF.ini file to redirect all requests to the same format as the 404 handler produced:
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ /Default.aspx?404;http://%{HTTP_HOST}$1 [U,L]
And everything seems to work great. The advantage over my previous answer is that the rewrite code is low level and runs fast and the -f and -d switches mean that if a file actually exists it isn't re-written and so static files don't have the overhead of running through .net.