Web browser timeout

Question

This is a C # desktop application in Visual Studio Express 2012.

I use the webBrowser control to access various websites, but some of them do not respond to requests or timeouts.

I suspected that it might be a webBrowser control that uses IE7, but found that websites work fine on an old PC running IE7 as their own browser. Is there something in the web browser that I need to configure in order for a website, such as the one in the code below, to handle the responses?

The code below moves to the website I am having problems with. If you enter any login and password values into your own browser , it will immediately respond and give an error, but in the web browser it sits there, waiting for a response and, ultimately, turns off.

Any help would be greatly appreciated!

Mick

namespace WindowsFormsApplication11 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { webBrowser1.Navigate( "https://www.my.telstra.com.au/myaccount/home?red=/myaccount/"); } } } 

Answer 1

Here is the full working code:

 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using Microsoft.Win32; using System.Diagnostics; namespace WindowsFormsApplication11 { public partial class Form1 : Form { public Form1() { SetBrowserFeatureControl(); InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { webBrowser1.Navigate("https://www.my.telstra.com.au/myaccount/home?red=/myaccount/"); } private void SetBrowserFeatureControlKey(string feature, string appName, uint value) { using (var key = Registry.CurrentUser.CreateSubKey( String.Concat(@"Software\Microsoft\Internet Explorer\Main\FeatureControl\", feature), RegistryKeyPermissionCheck.ReadWriteSubTree)) { key.SetValue(appName, (UInt32)value, RegistryValueKind.DWord); } } private void SetBrowserFeatureControl() { // http://msdn.microsoft.com/en-us/library/ee330720(v=vs.85).aspx // FeatureControl settings are per-process var fileName = System.IO.Path.GetFileName(Process.GetCurrentProcess().MainModule.FileName); // make the control is not running inside Visual Studio Designer if (String.Compare(fileName, "devenv.exe", true) == 0 || String.Compare(fileName, "XDesProc.exe", true) == 0) return; SetBrowserFeatureControlKey("FEATURE_BROWSER_EMULATION", fileName, GetBrowserEmulationMode()); // Webpages containing standards-based !DOCTYPE directives are displayed in IE10 Standards mode. SetBrowserFeatureControlKey("FEATURE_AJAX_CONNECTIONEVENTS", fileName, 1); SetBrowserFeatureControlKey("FEATURE_ENABLE_CLIPCHILDREN_OPTIMIZATION", fileName, 1); SetBrowserFeatureControlKey("FEATURE_MANAGE_SCRIPT_CIRCULAR_REFS", fileName, 1); SetBrowserFeatureControlKey("FEATURE_DOMSTORAGE ", fileName, 1); SetBrowserFeatureControlKey("FEATURE_GPU_RENDERING ", fileName, 1); SetBrowserFeatureControlKey("FEATURE_IVIEWOBJECTDRAW_DMLT9_WITH_GDI ", fileName, 0); SetBrowserFeatureControlKey("FEATURE_NINPUT_LEGACYMODE", fileName, 0); SetBrowserFeatureControlKey("FEATURE_DISABLE_LEGACY_COMPRESSION", fileName, 1); SetBrowserFeatureControlKey("FEATURE_LOCALMACHINE_LOCKDOWN", fileName, 0); SetBrowserFeatureControlKey("FEATURE_BLOCK_LMZ_OBJECT", fileName, 0); SetBrowserFeatureControlKey("FEATURE_BLOCK_LMZ_SCRIPT", fileName, 0); SetBrowserFeatureControlKey("FEATURE_DISABLE_NAVIGATION_SOUNDS", fileName, 1); SetBrowserFeatureControlKey("FEATURE_SCRIPTURL_MITIGATION", fileName, 1); SetBrowserFeatureControlKey("FEATURE_SPELLCHECKING", fileName, 0); SetBrowserFeatureControlKey("FEATURE_STATUS_BAR_THROTTLING", fileName, 1); SetBrowserFeatureControlKey("FEATURE_TABBED_BROWSING", fileName, 1); SetBrowserFeatureControlKey("FEATURE_VALIDATE_NAVIGATE_URL", fileName, 1); SetBrowserFeatureControlKey("FEATURE_WEBOC_DOCUMENT_ZOOM", fileName, 1); SetBrowserFeatureControlKey("FEATURE_WEBOC_POPUPMANAGEMENT", fileName, 0); SetBrowserFeatureControlKey("FEATURE_WEBOC_MOVESIZECHILD", fileName, 1); SetBrowserFeatureControlKey("FEATURE_ADDON_MANAGEMENT", fileName, 0); SetBrowserFeatureControlKey("FEATURE_WEBSOCKET", fileName, 1); SetBrowserFeatureControlKey("FEATURE_WINDOW_RESTRICTIONS ", fileName, 0); SetBrowserFeatureControlKey("FEATURE_XMLHTTP", fileName, 1); } private UInt32 GetBrowserEmulationMode() { int browserVersion = 7; using (var ieKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Internet Explorer", RegistryKeyPermissionCheck.ReadSubTree, System.Security.AccessControl.RegistryRights.QueryValues)) { var version = ieKey.GetValue("svcVersion"); if (null == version) { version = ieKey.GetValue("Version"); if (null == version) throw new ApplicationException("Microsoft Internet Explorer is required!"); } int.TryParse(version.ToString().Split('.')[0], out browserVersion); } UInt32 mode = 10000; // Internet Explorer 10. Webpages containing standards-based !DOCTYPE directives are displayed in IE10 Standards mode. Default value for Internet Explorer 10. switch (browserVersion) { case 7: mode = 7000; // Webpages containing standards-based !DOCTYPE directives are displayed in IE7 Standards mode. Default value for applications hosting the WebBrowser Control. break; case 8: mode = 8000; // Webpages containing standards-based !DOCTYPE directives are displayed in IE8 mode. Default value for Internet Explorer 8 break; case 9: mode = 9000; // Internet Explorer 9. Webpages containing standards-based !DOCTYPE directives are displayed in IE9 mode. Default value for Internet Explorer 9. break; default: // use IE10 mode by default break; } return mode; } } } 

Answer 2

I often worked with WenBrowserControl and cannot remember even once when I had no problems, especially with the browermode of the control. The following are some steps that have helped me solve many of these problems:

1) Make the application use the InternetExplorer settings: First I suggest you try adding the registry key for your application in

 HKLM\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION 

and

 HKLM\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BROWSER_EMULATION` 

with a value of 9000 , which forces the control in your application to use the IE9 settings. Here you can find the question that led me to this decision. Its description is described in great detail here.

2) Settings in Internet Explorer: The timeout problem seems to me like some IE security feature is blocking something. In my review Internet Explorer has peculiar rules regarding the content of websites. Try adding websites that time out to secure sites under Internetsettings IE. Try also to reduce the protected / blocked features of secure sites.

Please let me know if you have any further.