I integrated CefSharp into my project. I was able to work out some points. However, I couldn't figure out how to check Inputboxes for example on a given site. So how can I write data into that InputBox. I request your help in this matter.
Thanks in advance.
You won't be able to modify the content of your web page running inside CefSharp from the C# code directly. What you can do however is to pass javascript code that will run on the page and will change content.
For example, something similar to this:
var browser = new ChromiumWebBrowser("https://www.example.com");
await browser.ExecuteScriptAsync("document.getElementById('myTextBoxId').value='the value'");
Related
It should be such a problem: I should parse links from the site. Everything would be fine, but the links are displayed in the script and in the source code they are not. More precisely, they are, but the old ones.
Here is the site: http://54.join.ru/resume?q=
Need to parse links to resume. Everything is fine. But when you go to some other page, for example 5, a summary of changes, and the source code are old links, ie those that were on the first page.
Can anybody suggest how can I parse the new links? Write in c # using webBrowser.
Use Selenium WebDriver.
Selenium-WebDriver was developed to better support dynamic web pages
where elements of a page may change without the page itself being
reloaded.
Thus you will be able to access elements on a web page that has been changed dynamically by javascript.
Following code for example finds an element by given class name:
IWebElement we = driver.FindElement(By.ClassName("ra-elements-list__new-window-link"));
There is one website named "www.localbanya.com", i wanted to grab the HTML information from that site, they list products, the structure of their display is:
First they display some around 8-10 products on page-load, and
later when user scrolls down it generates more products.
Now as this is happening based on javascript, i am not able to get the whole page source using WebClient.
I wanted to know is there any way i can update the page-source while using WebClient class in .net to retrieve whole page information or any other alternative i can use to get the whole page HTML information, at once.
You can refer this for reference localbanya product page
Any help will be a appreciated.
WebClient obviously doesn't run the javascript.
so you gonna need some sort of a headless browser to do it.
There are many options for it, though I don't know any C# or .NET implementation..
You may look into Phantom JS and other headless browsers which replicate what a normal browser does and you can write scripts for it.
Also refer to this question
Headless browser for C# (.NET)?
You can also run something like Fiddler to see what requests were made from the page when scrolling down, to reverse engineer how the data is retrieved, and replicate that with a WebClient if possible.
Hope this Helps.
I have following problem.
Example site http://eisk.apphb.com/web-form-samples/listing-page.aspx
My c# application has to read data from gridview, but only for specific supervisor, so i need to change programmatically value in drop down list.
I have problem with change this value and get site with actually data in grid view.
Please help me solve this case.
I did something related in the past using Selenium, but now the changed the API and it's not so easy as it was before. (They merged Selenium with Web Driver)
You can see more about that in here:
http://www.seleniumhq.org/docs/05_selenium_rc.jsp
You can also use Watin to do the same.
http://www.codeproject.com/Articles/17064/WatiN-Web-Application-Testing-In-NET
You could use an HttpWebRequest to download the site content then use HtmlAgilityPack to parse the HTML and get the data.
I need to write a C# code for grabbing contents of a web page. Steps looks like following
Browse to login page
I have user name and a password, provide it programatically and login
Then you are in detail page
You have to get some information there, like (prodcut Id, Des, etc.)
Then need to click(by code) on Detail View
Then you can get the price for that product from there.
Now it is done, so we can write detail line into text file like this...
ABC Printer::225519::285.00
Please help me on this, (Even VB.Net Code is ok, I can convert it to C#)
The WatiN library is probably what you want, then. Basically, it controls a web browser (native support for IE and Firefox, I believe, though they may have added more since I last used it) and provides an easy syntax for programmatically interacting with page elements within that browser. All you'll need are the names and/or IDs of those elements, or some unique way to identify them on the page.
You should be able to achieve this using the WebRequest class to retrieve pages, and the HTML Agility Pack to extract elements from HTML source.
yea I downloaded that library. Nice one.
Thanks for sharing it with me. But I have a issue with that library. The site I want to get data is having a "captcha" on the login page.
I can enter that value if this can show image and wait for my input.
Can we achive that from this library, if you can like to have a sample.
You should be able to achieve this by using two classes in C#, HttpWebRequest (to request the web pages) and perhaps XmlTextReader (to parse the HTML/XML response).
If you do not wish to use XmlTextReader, then I'd advise looking into Regular Expressions, as they are fantastically useful for extracting information from large bodies of text where-in patterns exist.
How to: Send Data Using the WebRequest Class
I've been struggling to find an exmample of some C# code (I'm using C# Visual Studio 2008 Express) that can programmatically save an entire web page (given a URL) including the images and formatting (e.g. CSS). The intention is that in a subsequent phase I'd ship this off (not sure how yet) so it could be viewed later via a browser.
Is there an example of the most simple approach (leveraging the .NET Framework methods) to save an entire web page? Saving as one page with a subdirectory for images, or otherwise. Basically the same as what you get with browsers when you say "save entire web page".
The simplest way is probably to add a WebBrowser Control to your application and point it at the page you want to save using the Navigate() method.
Then, when the document has loaded, call the ShowSaveAsDialog method. The user can then save the page as a single file, or a file with images in a subdirectory.
[Update]
Having now noticed "programatically" in your question, the above approach is not ideal as it requires either user involvement or delving into the Windows API to send input using SendKeys or similar.
There is nothing built-in to the .NET Framework that does all of what you ask.
So my approach revised would be:
Use System.NET.HttpWebRequest to get the main HTML document as a string or stream (easy).
Load this into a HTMLAgilityPack document where you can now easily query the document to get lists of all image elements, stylesheet links, etc.
Then make a separate web request for each of these files and save them to a subdirectory.
Finally update all relevent links in the main page to point to the items in the subdirectory.
In effect you would be implementing a very simple web browser. You may run into issues with pages that use JavaScript to dynamically alter or request page content, but for most pages this should give acceptable results.
From code Project: ZetaWebSpider
It's definitely not elegant, but you could navigate a System.Windows.Forms.WebBrowser to the URL and then call its ShowSaveAsDiagog() method to save the page.