webbrowser-control | 易学教程

Windows Forms Webbrowswer control with IDownloadManager

阅读更多关于 Windows Forms Webbrowswer control with IDownloadManager

问题 I'm using the Systems.Windows.Forms.Webbrowser control and need to override the download manager. I've followed the instructions here to subclass the form and override CreateWebBrowserSiteBase() /// <summary> /// Browser with download manager /// </summary> public class MyBrowser : WebBrowser { /// <summary> /// Returns a reference to the unmanaged WebBrowser ActiveX control site, /// which you can extend to customize the managed <see ref="T:System.Windows.Forms.WebBrowser"/> control. /// <

How to use WebBrowser control DocumentCompleted event in C#?

阅读更多关于 How to use WebBrowser control DocumentCompleted event in C#?

Before starting writing this question, i was trying to solve following // 1. navigate to page // 2. wait until page is downloaded // 3. read and write some data from/to iframe // 4. submit (post) form The problem was, that if a iframe exists on a web page, DocumentCompleted event would get fired more then once (after each document has been completed). It was highly likely that program would have tried to read data from DOM that was not completed and naturally - fail. But suddenly while writing this question 'What if' monster inspired me, and i fix'ed the problem, that i was trying to solve. As

WebBrowser control - ignore SSL errors

阅读更多关于 WebBrowser control - ignore SSL errors

问题 Many hours of searching has not lead to an answer. We're looking for a way that a .NET WebBrowser control can navigate to pages with SSL security problems (self-signed certificates or non-matching hostnames) without stopping and displaying the error page: I've already seen many posts that are close: How to disable “Security Alert” window in Webbrowser control -- doesn't work because WebBrowser apparently doesn't use the ServicePointManager Suppressing Hosted WebBrowser Control Dialogs --

C# how to wait for a webpage to finish loading before continuing

阅读更多关于 C# how to wait for a webpage to finish loading before continuing

I'm trying to create a program to clone multiple bugs at a time through the web interface of our defect tracking system. How can I wait before a page is completely loaded before I continue? //This is pseudo code, but this should give you an idea of what I'm trying to do. The //actual code uses multi-threading and all that good stuff :). foreach (string bug in bugs) { webBrowser.Navigate(new Uri(url)); webBrowser.Document.GetElementById("product").SetAttribute("value", product); webBrowser.Document.GetElementById("version").SetAttribute("value", version); webBrowser.Document.GetElementById(

Is it possible to transfer authentication from Webbrowser to WebRequest

阅读更多关于 Is it possible to transfer authentication from Webbrowser to WebRequest

I'm using webbrowser control to login any site. And then i want to download some sub page html using WebRequest (or WebClient). This links must requires authentication. How to transfer Webbrowser authentication information to Webrequest or Webclient? If the question is only "How to transfer Webbrowser authentication information to Webrequest or Webclient?" this code is enough: You can call the GetUriCookieContainer method that returns you a CookieContainer that can be used for subsequent call with WebRequest object. [DllImport("wininet.dll", SetLastError = true)] public static extern bool

How to Fix the Memory Leak in IE WebBrowser Control?

阅读更多关于 How to Fix the Memory Leak in IE WebBrowser Control?

I am trying to embed a WebBrowser Control in a C# Winform Application. This sounds easy enough. However I discovered that the WebBrowser control eats up a lot of memory every time I call the Navigate method. The memory is never released. The memory usage grows and grows… Many people on the net having the exact same problem but I haven’t found a satisfying answer yet. This is the best discussions about this issue I found so far: Memory Leak in IE WebBrowser Control One person suggested an upgrade to IE8 to fix the problem. However I need a solution that works whether the user has the latest IE

Can I wait for a webbrowser to finish navigating, using a for loop?

阅读更多关于 Can I wait for a webbrowser to finish navigating, using a for loop?

问题 I have a for loop: for (i = 0; i <= 21; i++) { webB.Navigate(URL); } webB is a webBrowser control and i is an int. I want to wait for the browser to finish navigating. I found this, however: I don't want to use any APIs or addins I can't use another void function, as suggested in this answer Is there a way to wait while in a for loop? 回答1: Assuming you host WebBrowser in a WinFroms application, you can do it in a loop easily and efficiently, using async/await pattern. Try this: async Task

WebBrowser control and JavaScript errors

阅读更多关于 WebBrowser control and JavaScript errors

问题 When I access the page with the browser (ie9), the browser is rendering ok. When I use the WebBrowser control I have JavaScript errors. I know I can suppress the scripts errors, but I want them to run correctly, because they affect the rendering and the functionality of the page. How can I solve this problem ? Can I integrate IE9 directly in the Windows Form and use similar methods like with the WebBrowser control (navigate,get id, invoke click) ? Thanks. 回答1: What I would do is assign an

How to deactivate “right click” on WPF Webbrowser Control?

阅读更多关于 How to deactivate “right click” on WPF Webbrowser Control?

问题 I can't seem to find an answer to this. Does anyone know? Thanks 回答1: Here is the code of a utility class that allows you to deactivate WPF's WebBrowser context menu. It also allows you to suppress script errors (WPF WebBrowser control - how to supress script errors?) and change IE's DOCHOSTUIFLAG. Usage sample: public partial class Player : Window { private WebBrowserHostUIHandler _wbHandler; public Player() { InitializeComponent(); ... _wbHandler = new WebBrowserHostUIHandler(MyWebBrower);

Print WebBrowser without previewing i.e. single click print

阅读更多关于 Print WebBrowser without previewing i.e. single click print

I have a c# .Net application that opens a custom Print Preview form (compromising of a WebBrowser form control that displays a HTML file and a button which prints the contents of the web browser control: webBrowser.Print(); However, I now would like to print the HTML file WITHOUT opening this form. I have tried to load the html into a webbrowser form without displaying the form and called webBrowser.Print() but nothing will print. It seems I only can print if I show the form and load the HTML into the control. I have a sample console app that prints a set HTML files using WinForms WebBrowser .