मैं एक WebBrowser नियंत्रण के साथ एक विंडोज़ अनुप्रयोग विकसित कर रहा हूं जो एक शेयरपॉइंट साइट पर नेविगेट करता है।
मेरी समस्या यह है कि मुझे जावास्क्रिप्ट त्रुटि हो रही है।
मैं जावास्क्रिप्ट त्रुटि को कैसे निष्क्रिय कर सकता हूं? मैं उन्हें पॉप नहीं करना चाहता।
जवाबों:
webBrowser.ScriptErrorsSuppressed = true;यह स्क्रिप्ट त्रुटियों को अक्षम करता है और अन्य विंडो को भी अक्षम करता है .. जैसे कि NTLM लॉगिन विंडो या क्लाइंट प्रमाणपत्र विंडो स्वीकार करें। नीचे केवल जावास्क्रिप्ट त्रुटियों को दबाया जाएगा।
// Hides script errors without hiding other dialog boxes.
private void SuppressScriptErrorsOnly(WebBrowser browser)
{
// Ensure that ScriptErrorsSuppressed is set to false.
browser.ScriptErrorsSuppressed = false;
// Handle DocumentCompleted to gain access to the Document object.
browser.DocumentCompleted +=
new WebBrowserDocumentCompletedEventHandler(
browser_DocumentCompleted);
}
private void browser_DocumentCompleted(object sender,
WebBrowserDocumentCompletedEventArgs e)
{
((WebBrowser)sender).Document.Window.Error +=
new HtmlElementErrorEventHandler(Window_Error);
}
private void Window_Error(object sender,
HtmlElementErrorEventArgs e)
{
// Ignore the error and suppress the error dialog box.
e.Handled = true;
}उपरोक्त समाधानों में से कोई भी मेरे परिदृश्य के लिए उपयुक्त नहीं था। समान डोमेन / पता लेकिन फ़्रेम के अपने सुरक्षा छेद हैं जिन्हें अवरुद्ध किया जा रहा है)।
काम किया समाधान IOleCommandTarget को ओवरराइड करने और उस स्तर पर स्क्रिप्ट त्रुटि कमांड को पकड़ने के लिए था। इसे प्राप्त करने के लिए यहां WebBrowser उप-वर्ग है:
/// <summary>
/// Subclassed WebBrowser that suppresses error pop-ups.
///
/// Notes.
/// ScriptErrorsSuppressed property is not used because this actually suppresses *all* pop-ups.
///
/// More info at:
/// http://stackoverflow.com/questions/2476360/disable-javascript-error-in-webbrowser-control
/// </summary>
public class WebBrowserEx : WebBrowser
{
#region Constructor
/// <summary>
/// Default constructor.
/// Initialise browser control and attach customer event handlers.
/// </summary>
public WebBrowserEx()
{
this.ScriptErrorsSuppressed = false;
}
#endregion
#region Overrides
/// <summary>
/// Override to allow custom script error handling.
/// </summary>
/// <returns></returns>
protected override WebBrowserSiteBase CreateWebBrowserSiteBase()
{
return new WebBrowserSiteEx(this);
}
#endregion
#region Inner Class [WebBrowserSiteEx]
/// <summary>
/// Sub-class to allow custom script error handling.
/// </summary>
protected class WebBrowserSiteEx : WebBrowserSite, NativeMethods.IOleCommandTarget
{
/// <summary>
/// Default constructor.
/// </summary>
public WebBrowserSiteEx(WebBrowserEx webBrowser) : base (webBrowser)
{
}
/// <summary>Queries the object for the status of one or more commands generated by user interface events.</summary>
/// <param name="pguidCmdGroup">The GUID of the command group.</param>
/// <param name="cCmds">The number of commands in <paramref name="prgCmds" />.</param>
/// <param name="prgCmds">An array of OLECMD structures that indicate the commands for which the caller needs status information. This method fills the <paramref name="cmdf" /> member of each structure with values taken from the OLECMDF enumeration.</param>
/// <param name="pCmdText">An OLECMDTEXT structure in which to return name and/or status information of a single command. This parameter can be null to indicate that the caller does not need this information.</param>
/// <returns>This method returns S_OK on success. Other possible return values include the following.
/// E_FAIL The operation failed.
/// E_UNEXPECTED An unexpected error has occurred.
/// E_POINTER The <paramref name="prgCmds" /> argument is null.
/// OLECMDERR_E_UNKNOWNGROUP The <paramref name="pguidCmdGroup" /> parameter is not null but does not specify a recognized command group.</returns>
public int QueryStatus(ref Guid pguidCmdGroup, int cCmds, NativeMethods.OLECMD prgCmds, IntPtr pCmdText)
{
if((int)NativeMethods.OLECMDID.OLECMDID_SHOWSCRIPTERROR == prgCmds.cmdID)
{ // Do nothing (suppress script errors)
return NativeMethods.S_OK;
}
// Indicate that command is unknown. The command will then be handled by another IOleCommandTarget.
return NativeMethods.OLECMDERR_E_UNKNOWNGROUP;
}
/// <summary>Executes the specified command.</summary>
/// <param name="pguidCmdGroup">The GUID of the command group.</param>
/// <param name="nCmdID">The command ID.</param>
/// <param name="nCmdexecopt">Specifies how the object should execute the command. Possible values are taken from the <see cref="T:Microsoft.VisualStudio.OLE.Interop.OLECMDEXECOPT" /> and <see cref="T:Microsoft.VisualStudio.OLE.Interop.OLECMDID_WINDOWSTATE_FLAG" /> enumerations.</param>
/// <param name="pvaIn">The input arguments of the command.</param>
/// <param name="pvaOut">The output arguments of the command.</param>
/// <returns>This method returns S_OK on success. Other possible return values include
/// OLECMDERR_E_UNKNOWNGROUP The <paramref name="pguidCmdGroup" /> parameter is not null but does not specify a recognized command group.
/// OLECMDERR_E_NOTSUPPORTED The <paramref name="nCmdID" /> parameter is not a valid command in the group identified by <paramref name="pguidCmdGroup" />.
/// OLECMDERR_E_DISABLED The command identified by <paramref name="nCmdID" /> is currently disabled and cannot be executed.
/// OLECMDERR_E_NOHELP The caller has asked for help on the command identified by <paramref name="nCmdID" />, but no help is available.
/// OLECMDERR_E_CANCELED The user canceled the execution of the command.</returns>
public int Exec(ref Guid pguidCmdGroup, int nCmdID, int nCmdexecopt, object[] pvaIn, int pvaOut)
{
if((int)NativeMethods.OLECMDID.OLECMDID_SHOWSCRIPTERROR == nCmdID)
{ // Do nothing (suppress script errors)
return NativeMethods.S_OK;
}
// Indicate that command is unknown. The command will then be handled by another IOleCommandTarget.
return NativeMethods.OLECMDERR_E_UNKNOWNGROUP;
}
}
#endregion
}~
/// <summary>
/// Native (unmanaged) methods, required for custom command handling for the WebBrowser control.
/// </summary>
public static class NativeMethods
{
/// From docobj.h
public const int OLECMDERR_E_UNKNOWNGROUP = -2147221244;
/// <summary>
/// From Microsoft.VisualStudio.OLE.Interop (Visual Studio 2010 SDK).
/// </summary>
public enum OLECMDID
{
/// <summary />
OLECMDID_OPEN = 1,
/// <summary />
OLECMDID_NEW,
/// <summary />
OLECMDID_SAVE,
/// <summary />
OLECMDID_SAVEAS,
/// <summary />
OLECMDID_SAVECOPYAS,
/// <summary />
OLECMDID_PRINT,
/// <summary />
OLECMDID_PRINTPREVIEW,
/// <summary />
OLECMDID_PAGESETUP,
/// <summary />
OLECMDID_SPELL,
/// <summary />
OLECMDID_PROPERTIES,
/// <summary />
OLECMDID_CUT,
/// <summary />
OLECMDID_COPY,
/// <summary />
OLECMDID_PASTE,
/// <summary />
OLECMDID_PASTESPECIAL,
/// <summary />
OLECMDID_UNDO,
/// <summary />
OLECMDID_REDO,
/// <summary />
OLECMDID_SELECTALL,
/// <summary />
OLECMDID_CLEARSELECTION,
/// <summary />
OLECMDID_ZOOM,
/// <summary />
OLECMDID_GETZOOMRANGE,
/// <summary />
OLECMDID_UPDATECOMMANDS,
/// <summary />
OLECMDID_REFRESH,
/// <summary />
OLECMDID_STOP,
/// <summary />
OLECMDID_HIDETOOLBARS,
/// <summary />
OLECMDID_SETPROGRESSMAX,
/// <summary />
OLECMDID_SETPROGRESSPOS,
/// <summary />
OLECMDID_SETPROGRESSTEXT,
/// <summary />
OLECMDID_SETTITLE,
/// <summary />
OLECMDID_SETDOWNLOADSTATE,
/// <summary />
OLECMDID_STOPDOWNLOAD,
/// <summary />
OLECMDID_ONTOOLBARACTIVATED,
/// <summary />
OLECMDID_FIND,
/// <summary />
OLECMDID_DELETE,
/// <summary />
OLECMDID_HTTPEQUIV,
/// <summary />
OLECMDID_HTTPEQUIV_DONE,
/// <summary />
OLECMDID_ENABLE_INTERACTION,
/// <summary />
OLECMDID_ONUNLOAD,
/// <summary />
OLECMDID_PROPERTYBAG2,
/// <summary />
OLECMDID_PREREFRESH,
/// <summary />
OLECMDID_SHOWSCRIPTERROR,
/// <summary />
OLECMDID_SHOWMESSAGE,
/// <summary />
OLECMDID_SHOWFIND,
/// <summary />
OLECMDID_SHOWPAGESETUP,
/// <summary />
OLECMDID_SHOWPRINT,
/// <summary />
OLECMDID_CLOSE,
/// <summary />
OLECMDID_ALLOWUILESSSAVEAS,
/// <summary />
OLECMDID_DONTDOWNLOADCSS,
/// <summary />
OLECMDID_UPDATEPAGESTATUS,
/// <summary />
OLECMDID_PRINT2,
/// <summary />
OLECMDID_PRINTPREVIEW2,
/// <summary />
OLECMDID_SETPRINTTEMPLATE,
/// <summary />
OLECMDID_GETPRINTTEMPLATE
}
/// <summary>
/// From Microsoft.VisualStudio.Shell (Visual Studio 2010 SDK).
/// </summary>
public const int S_OK = 0;
/// <summary>
/// OLE command structure.
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public class OLECMD
{
/// <summary>
/// Command ID.
/// </summary>
[MarshalAs(UnmanagedType.U4)]
public int cmdID;
/// <summary>
/// Flags associated with cmdID.
/// </summary>
[MarshalAs(UnmanagedType.U4)]
public int cmdf;
}
/// <summary>
/// Enables the dispatching of commands between objects and containers.
/// </summary>
[ComVisible(true), Guid("B722BCCB-4E68-101B-A2BC-00AA00404770"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
[ComImport]
public interface IOleCommandTarget
{
/// <summary>Queries the object for the status of one or more commands generated by user interface events.</summary>
/// <param name="pguidCmdGroup">The GUID of the command group.</param>
/// <param name="cCmds">The number of commands in <paramref name="prgCmds" />.</param>
/// <param name="prgCmds">An array of <see cref="T:Microsoft.VisualStudio.OLE.Interop.OLECMD" /> structures that indicate the commands for which the caller needs status information.</param>
/// <param name="pCmdText">An <see cref="T:Microsoft.VisualStudio.OLE.Interop.OLECMDTEXT" /> structure in which to return name and/or status information of a single command. This parameter can be null to indicate that the caller does not need this information.</param>
/// <returns>This method returns S_OK on success. Other possible return values include the following.
/// E_FAIL The operation failed.
/// E_UNEXPECTED An unexpected error has occurred.
/// E_POINTER The <paramref name="prgCmds" /> argument is null.
/// OLECMDERR_E_UNKNOWNGROUPThe <paramref name="pguidCmdGroup" /> parameter is not null but does not specify a recognized command group.</returns>
[PreserveSig]
[return: MarshalAs(UnmanagedType.I4)]
int QueryStatus(ref Guid pguidCmdGroup, int cCmds, [In] [Out] NativeMethods.OLECMD prgCmds, [In] [Out] IntPtr pCmdText);
/// <summary>Executes the specified command.</summary>
/// <param name="pguidCmdGroup">The GUID of the command group.</param>
/// <param name="nCmdID">The command ID.</param>
/// <param name="nCmdexecopt">Specifies how the object should execute the command. Possible values are taken from the <see cref="T:Microsoft.VisualStudio.OLE.Interop.OLECMDEXECOPT" /> and <see cref="T:Microsoft.VisualStudio.OLE.Interop.OLECMDID_WINDOWSTATE_FLAG" /> enumerations.</param>
/// <param name="pvaIn">The input arguments of the command.</param>
/// <param name="pvaOut">The output arguments of the command.</param>
/// <returns>This method returns S_OK on success. Other possible return values include
/// OLECMDERR_E_UNKNOWNGROUP The <paramref name="pguidCmdGroup" /> parameter is not null but does not specify a recognized command group.
/// OLECMDERR_E_NOTSUPPORTED The <paramref name="nCmdID" /> parameter is not a valid command in the group identified by <paramref name="pguidCmdGroup" />.
/// OLECMDERR_E_DISABLED The command identified by <paramref name="nCmdID" /> is currently disabled and cannot be executed.
/// OLECMDERR_E_NOHELP The caller has asked for help on the command identified by <paramref name="nCmdID" />, but no help is available.
/// OLECMDERR_E_CANCELED The user canceled the execution of the command.</returns>
[PreserveSig]
[return: MarshalAs(UnmanagedType.I4)]
int Exec(ref Guid pguidCmdGroup, int nCmdID, int nCmdexecopt, [MarshalAs(UnmanagedType.LPArray)] [In] object[] pvaIn, int pvaOut);
}
}embedइस पृष्ठ पर खोज करें) - dev.windows.com/en-us/microsoft-edge/platform/faq/apps-engine )
यहाँ एक वैकल्पिक समाधान है:
class extendedWebBrowser : WebBrowser
{
/// <summary>
/// Default constructor which will make the browser to ignore all errors
/// </summary>
public extendedWebBrowser()
{
this.ScriptErrorsSuppressed = true;
FieldInfo field = typeof(WebBrowser).GetField("_axIWebBrowser2", BindingFlags.Instance | BindingFlags.NonPublic);
if (field != null)
{
object axIWebBrowser2 = field.GetValue(this);
axIWebBrowser2.GetType().InvokeMember("Silent", BindingFlags.SetProperty, null, axIWebBrowser2, new object[] { true });
}
}
}मुझे यह मिला:
private static bool TrySetSuppressScriptErrors(WebBrowser webBrowser, bool value)
{
FieldInfo field = typeof(WebBrowser).GetField("_axIWebBrowser2", BindingFlags.Instance | BindingFlags.NonPublic);
if (field != null)
{
object axIWebBrowser2 = field.GetValue(webBrowser);
if (axIWebBrowser2 != null)
{
axIWebBrowser2.GetType().InvokeMember("Silent", BindingFlags.SetProperty, null, axIWebBrowser2, new object[] { value });
return true;
}
}
return false;
}वेबब्राउजर को चुप करने के लिए उपयोग उदाहरण: TrySetSuppressScriptErrors (webBrowser, true)