webbrowser-control | 易学教程

Prevent from displaying of Windows Security window

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问题 I have some router config page URLs, I have to load them, set sth and save it. I'm using webbrowser control and .Net 4.5 and C# language. But every time a page loads, windows security pops up and asks for username and password. It happens for each URL. How can I prevent from this? Usernames and passwords are same for all of the URLs. How can I use hardcode to set username and password for all of them?! 回答1: You need to provide an implementation of IAuthenticate COM interface to the WebBrowser

C# WebBrowser Control Proxy

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问题 How to implement Proxy in C# WebBrowser control/Component. What I want to know, is how to implement proxy, so my C# webBrowser control use this proxy for browsing when its run. I also don't want to change proxy through registry ... because it affect my normal Browsing... 回答1: private Uri currentUri; private void Form1_Load(object sender, EventArgs e) { currentUri = new Uri(@"http://www.stackoverflow.com"); HttpWebRequest myRequest = (HttpWebRequest) HttpWebRequest.Create("http://www

How Can Read Web Page Using WebBrowser control

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问题 string urlt = webBrowser1.Url.ToString(); Webbrowser1.Navigate("Google.com") HtmlElement elem; if (webBrowser1.Document != null) { HtmlElementCollection elems = webBrowser1.Document.GetElementsByTagName("HTML"); if (elems.Count == 1) { elem = elems[0]; string pageSource = elem.InnerHtml; if (pageSource == "404" || pageSource == "Inter" || pageSource == "siteblocked") { } else { Ret2.Add("Page.." + "Url..." + urlt); } Am Using above mentioned code for reading WebPage at "DocumentCompleted"

How to get around the memory leak in the .NET Webbrowser control?

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This is a widely-known, old issue with the .NET Webbrowser control. Summary: Having the .NET webbrowser control Navigate to a page increases memory usage that is never freed. Reproduce the memory leak: Add a WebBrowser control to a form. Use it to Navigate to whatever pages you'd like. about:blank works, scrolling down on Google Images until your usage is 100MB+ and then browsing elsewhere to notice barely any of that memory is freed is a more dramatic demonstration. My current requirements for an application include running it for long periods of time, displaying a limited IE7 browser window.

How do I get a C# WebBrowser control to show jpeg files (raw)?

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问题 Does anyone know in .Net 2.0 - .Net 3.5 how to load a jpeg into a System.Windows.Forms.WebControl as a byte-array and with the right mimetypes set so it will show? Something like: webBrowser1.DocumentStream = new MemoryStream(File.ReadAllBytes("mypic.jpg")); webBrowser1.DocumentType = "application/jpeg"; The webBrowser1.DocumentType seems to be read only, so I do not know how to do this. In general I want to be able to load any kind of filesource with a mimetype defined into the browser to

Interaction between WebBrowser Control and Windows Forms

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问题 I am managing various contact information - phone, address, email, IM, other and I want it to look good and save real estate, so I want to display it in a WebBrowser control. I can create the markup and content dynamically into a stream and display it with any format with colors and font size easily adjusted. I can also put buttons <input> for Add, Edit, and Delete. I like this method, because it seems easier and better looking than a RichTextBox (correct me if you think otherwise.) The

How to programmatically turn off quirks mode in IE8 WebBrowser control?

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问题 I want to use IE8 as a WebBrowser control in a C# application. How can I disable "quirks mode" and force IE into standards compliance (as far as it is implemented)? 回答1: I think the issue you're facing is described in IEBlog: WebBrowser Control Rendering Modes in IE8: While webmasters can easily alter their site to render properly in the new version of IE, many software vendors do not have the resources to instantly push out new versions of their applications with updated internal pages. In

Retrieving Selected Text from Webbrowser control in .net(C#)

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问题 I've been trying to figure out how to retrieve the text selected by the user in my webbrowser control and have had no luck after digging through msdn and other resources, So I was wondering if there is a way to actually do this. Maybe I simply missed something. I appreciate any help or resources regarding this. Thanks 回答1: You need to use the Document.DomDocument property of the WebBrowser control and cast this to the IHtmlDocument2 interface provided in the Microsoft.mshtml interop assembly.

WebBrowser.DrawToBitmap() or other methods?

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I am trying to capture the content of the WebBrowser control. DrawToBitmap() would work perfectly, but it is not supported in documentation for the WebBrowser control. I have been trying to find another way to capture the contents of the WebBrowser control and save them to a local image file. Does anyone have any workarounds or other methods to save the contents of the WebBrowser control to a local image file? The Control.DrawToBitmap doesn't always work so I resorted to the following native API calls that provide more consistent results: The Utilities class. Call Utilities.CaptureWindow

How to handle Javascript events via WebBrowser control for WinForms

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问题 I have read WebBrowser Control from .Net — How to Inject Javascript, Is it possible to call Javascript method from C# winforms and many others. Those examples were returns function value or alert window (synchronous calls). I have to get result from event handler (async call): <script type="text/javascript"> window.onload = function() { var o = new M.Build(document.getElementById("ZID")); M.Events.observe(o, o.Events.Success, function() { // I have to get some value!! }); M.Events.observe(o,