I'm using the webbrowser control to scrape my medical information from my Health Care provider,
The website is secured using a username and password, I've managed to scrape everything I need except some pdf file.
After navigating to the page I get this javascript "Loading...", In a regular browser I'll see the PDF file rendered in the browser, but for the webbrowser control it doesn't display the pdf, I get the famous yellow notification bar.
The url for the pdf file is like this
"https://www.***.com/phoenix/views/akgCharts/zoomAkgChart.jsp?&date=20130502&time=123000",
I'm using mshtml to do all the scraping, I don'tfind the file in the mshtml object, using fidller 2.0 I can see that the pdf file is downloaded to the computer (somewhere in the memory, I didn't find it in any folder)
Any idea??
if you know the url what is sends you the file you can try something like this:
System.Net.WebClient _wclient = new System.Net.WebClient();
_wclient.DownloadFile("https://www.***.com/phoenix/views/akgCharts/zoomAkgChart.jsp?&date=20130502&time=123000",", #"c:\MedicalReport_" + DateTime.Now + ".pdf");
Related
I'm trying to download a zip file (that is normally accessed/downloaded by pressing a button on a web page) using C#.
Normally the file is downloaded by selecting "Data Export" and then clicking the "SEARCH" button at this URL:
http://insynsok.fi.se/SearchPage.aspx?reporttype=0&culture=en-GB&fromdate=2016-05-30&tomdate=2016-06-03
If trigger the download manually on the webpage and then copy the download url from the 'Downloads' view of chrome or firefox I get the exact same URL as above. When I paste that in a browser window I will not trigger the download, instead the above page will be loaded and I have to trigger the download manually in the same way as in the first place.
I've also tried using the network tab of the inspector to copy the request header of the request that is triggered when clicking the "SEARCH" button, but that URL is also the same as the one above.
Trying with C# I get the same result, the page itself is downloaded. My code looks as follows:
using (var client = new WebClient())
{
client.DownloadFile("http://insynsok.fi.se/SearchPage.aspx?reporttype=0&culture=sv-SE&fromdate=2016-05-30&tomdate=2016-06-03", "zipfile.zip");
}
My guess is that my code is correct, but how do I get the correct URL to be able to download the file directly?
ASP.net inserts a bunch of crap into the the page to make things like this particularly hard. (Validation tokens, form tokens, etc).
Your best bet is to use a python library called Mechanize, or if you want to stick to C# you can use Selenium or C# WebBrowser. This will fully automate visiting the page (you can render the C# WebBrowser invisible), then just click the button to trigger the download programatically.
Someone made a c# program that cycles through a set of links till it can find something to download, this can be a word document or a pdf, we would only like to have the pdf files and skip all the other files! The server is asp based so it does not show pdf in it's url! the source code of the page does show this however:
type="application/pdf"
the type is placed in an embed.
How could we stop the browser from downloading word documents, ... and only download the pdf's?
Make a web request and set
webRequest.Method = "HEAD";
That will download just the headers, which you can then inspect to see if the MIME type is one that you want to download.
I need to open up Internet Explorer with an URL and then read the source code of the document in C#.
Is this possible?
I know you can start processes but how can i navigate to an URL and get the source code?
I have to open it via IE, because the protocol im using to retrieve the page only works in IE.
Thanks!
Following can get you html from a url without opening IE.
using(WebClient client = new WebClient()) {
string html = client.DownloadString(address);
}
To open IE for a particular URL you can do :
System.Diagnostics.Process.Start("iexplore", "http://example.com");
Depending on your requirements there are different techniques:
Process.Start("iexplore.exe", "http://www.google.com"); to run IE and then a WebCilent.DownloadString to download the HTML source (2 HTTP requests sent to the server)
Use the WebBrowser control which allows you to embed IE in a desktop application. It also allows you to retrieve the HTML source code of the webpage to which it navigated.
I have a WebBrowser element in my UI, I can make it navigate to a hosted page, but when I want it to load a local webpage (which is in my solution resources), which is the exact html file hosted on internet, it just shows a blank page.
browser.Navigate(new Uri("test.html", UriKind.Relative));
If I change the UriKind or the page name it shows an error that the file could not be found, so I know the browser is finding the webpage correctly but it won't render it.
I need to do this because I want to show the page while the user is offline.
If the html file has a build action of Content you can access it directly from the install location if you set a relative path.
If you want to be able to navigate between pages or include other resources in the file (including external css, js or even images) then you'll either need to copy all the files to IsolatedStorage and view them from there or host them externally.
Edit:
MSDN has an article which explains copying files to IsolatedStorage, so they can be viewed in the WebBrowser control, at http://msdn.microsoft.com/en-us/library/ff431811(v=vs.92).aspx
The browser cannot read a resource from your App/Dll. However, it you have the file in the same folder as you application you could do:
var home = System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase;
browser.Navigate(new Uri("file://" + home + "/test.html");
Hii,
My requirment is to show a dynamically created pdf file directly to my web page. It works fine for the system which is having pdf reader software. But for the system which does not have the pdf software it is showing error like below
The XML page cannot be displayed
Cannot view XML input using style sheet. Please correct the error and then click the Refresh button, or try again later.
An invalid character was found in text content. Error processing resource 'http://localhost:4252/OmanePost/Customer/EBox/PD...
I need to handle this situation bit differently.i.e In this situation the file should be save to the physical location of the system for that i need to identify whether the client machine has pdf software or not then i can manage properly
I m using ASP.NET 2.0 version
It looks to me that you are serving your PDF with an XML mime/content-type. Make sure you set your content-type to application/pdf and you'll probably get a more suitable browser response.
In this case the browser should ask the user to open the file in an external application.
Please verify that you are sending the correct Content-Type: application/pdf header. Certain versions of Microsoft's browser ignore the content-type header, so you need to specify a filename ending in .pdf in the content disposition header: Content-Disposition: inline; filename=filename.pdf;
Note: I have not verified that it works with "inline" instead of "attachment", but I think it is worth a try.
My requirment is to show a dynamically created pdf file directly to my web page.
Try online ZohoViewer that takes a PDF file link and displays in the browser without requiring PDF reader on the client machine. As such there's no way to check if the client machine has a pdf reader or not.
You can not identify that client system has pdf software using javascript, asp.net, c#.
If the PDF reader software is not there and the PDF is a valid PDF then it should not throw exception. Instead it asks for a software in client machine which can read the file.