How to access the elements within an in WebBrowser in C#.NET?
try this
webBrowser1.Document.GetElementById("idName").SetAttribute("value") = "ddddd" ;
var stuff=webBrowser1.Document.GetElementById("idName").GetAttribute("attribute");
it works for me when I need to get/set control data and get any html element value
Generally, you can't. C# and .NET are typically used in frameworks like ASP.NET to produce the content that is consumed by the browser. This happens on the server-side.
If .NET is installed on the client, then you can host a Windows Forms control in an HTML document in Internet Explorer but this is very, very non-standard, and I'd advise heavily against doing so.
As far as I understand you can access the controls inside the webbroswer control using the following code
WebBrowser1.Document.GetElementById("controlId").
Is this what you are looking for?
Additionally this discussion in daniweb might be of some interest to you.
Related
I'm trying to scrape a particular webpage which works as follows.
First the page loads, then it runs some sort of javascript to fetch the data it needs to populate the page. I'm interested in that data.
If I Get the page with HtmlAgilityPack - the script doesn't run so I get what it essentially a mostly-blank page.
Is there a way to force it to run a script, so I can get the data?
You are getting what the server is returning - the same as a web browser. A web browser, of course, then runs the scripts. Html Agility Pack is an HTML parser only - it has no way to interpret the javascript or bind it to its internal representation of the document. If you wanted to run the script you would need a web browser. The perfect answer to your problem would be a complete "headless" web browser. That is something that incorporates an HTML parser, a javascript interpreter, and a model that simulates the browser DOM, all working together. Basically, that's a web browser, except without the rendering part of it. At this time there isn't such a thing that works entirely within the .NET environment.
Your best bet is to use a WebBrowser control and actually load and run the page in Internet Explorer under programmatic control. This won't be fast or pretty, but it will do what you need to do.
Also see my answer to a similar question: Load a DOM and Execute javascript, server side, with .Net which discusses the available technology in .NET to do this. Most of the pieces exist right now but just aren't quite there yet or haven't been integrated in the right way, unfortunately.
You can use Awesomium for this, http://www.awesomium.com/. It works fairly well but has no support for x64 and is not thread safe. I'm using it to scan some web sites 24x7 and it's running fine for at least a couple of days in a row but then it usually crashes.
I am trying to make an application that will fill in the info i type into the actual web page so I can register at websites very very easy whenever I need them. However I'm not sure how I would go about this. I know I would either have to use a WebBrowser or an Html request, but I am not sure what the basic syntax for it is. I could really use the help!
EDIT: I am trying to use Document.GetElementByID in order to do this. I don't want to use plugins to do this. I want to go a program.
Look into Browser Helper Objects and how to implement them in .NET. BHO-s can interact with the page loaded into an IE browser.
There are plenty of Wordpress template out there, most of them are well designed.
I like to know, is there a way to easy to use Wordpress template in c# project.
Is there any out-of-the-box solution?
Just grab a copy of the output HTML and the CSS of the WP site and apply/build your ASP.NET site around it. This is straightforward in itself. Where most people get confused is when there's a master page in the mix in ASPNET; however, this is not a problem. Just start (with the HTML produced by the WP site) by creating the main divs working from the outside-in, using the master page and then content areas in your pages. Master page(s) will generally contain display elements common to all or a subset of pages.
No, there is nothing "out-of-the-box".
You will need to write your own converter if you wish to do this, though translating a single page shouldn't be too difficult.
How to read file form local file system(client side) in asp.net , is there any activeX require to do this or it can be done with out it
It cannot be done without extra help like an ActiveX, but I'm not aware of any ready-made solutions. Why do you want to read a local file? Most users will not like this approach...
What are you really trying to do ?? Isn't there another way (e.g. user uploading the file to your ASP.NET site) to achieve the result you want??
Marc
you can use Javascript and this can be done by using FileSystemObject object
check the following link:
File Handling at Client Side using Javascript
Note:
This object is part of Microsoft' Scripting Engine, and thus this column is applicable only to Microsoft Windows operating systems.
As Marc Said, ASP.net can't do it.
There are a few options
Provide a file upload mechanism (most common, easiest)
Use ActiveX
Use Silverlight, at least with silverlight you can write in managed code and access the client(instructions for file open and file save)
I know i can use AJAX and SILVERLIGHT with my ASP.NET web page. But what do you think about using flash with asp.net? Can this be done? How can this be done? Would you recommend me using flash at all with ASP.NET? I will NOT be using WEB SERVICES, just a plain ASP.NET website.
Thanks in advance!
EDIT: What about performance issues???
I have used Flash in ASP.NET websites plenty.
Software should always boil down to the best tool for the job, if Flash is the way you need to go for your RIA, then so be it.
Remember, ASP.NET is nothing "new/different" ultimately, it is just a fancy HTML generator.
Therefore, to use flash, you simply use the plain old HTML OBJECT and EMBED tags to place the Flash on the page.
The benefit of using things like ASP.NET (or any other framework) is that you can encapsulate the EMBED logic to use things like swfObject.
flash is client side, what you use server side has very little impact on it.
Given Flash's high market penetration (98%+), I think Flash is a great way to go regardless of the underlying platform.
But, as with everything, it depends on what you want to do. If you want to deliver a rich user interface via Flash, you should consider using Flex.
There are several tools to help integrate a Flash/Flex application with ASP.NET. One of these that I recommend is WebORB.
It certainly can be done! We've done entire flash-based websites in the past that rely on data generated by a CMS and read from flash via XML. There are of course lots of gotchas (loading html text, multilingual characters), but once you've done it a few times you'll get the hang of it.
Flex is probably a better option.