C# How to block javascript alert by using SHDocVw.InternetExplorer

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I just want to know the way of blocking message box from IE by using SHDocVw.InternetExplorer.

Before I have used the code below with WebBrowser

HtmlElement head = wb.Document.GetElementsByTagName("head")[0];
HtmlElement scriptEl = wb.Document.CreateElement("script");
IHTMLScriptElement element = (IHTMLScriptElement)scriptEl.DomElement;
string alertBlocker = "window.alert = function () { }";
element.text = alertBlocker;
head.AppendChild(scriptEl);

But, Now I'm handling with SHDocVw.InternetExplorer.

So Is there any method to block or click directly after navigation event fired?

Maybe simply removing 'alert' element would be working?

Any help is greatly appreciated.

Posted 13-Nov-14 3:19am

Member 10874313

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[no name] 13-Nov-14 9:50am

What alert are you talking about?

Here is a list of WebBrowser Events you can use.

Member 10874313 13-Nov-14 11:21am

Yeah, but the InternetExplorer instance is handled outside of my application.
I could not use the WebBrowser and SHDocVw.InternetExplorer has different functions to compare WebBrowser.

ZurdoDev 13-Nov-14 9:51am

You want to block the alert() function? Why?

[no name] 13-Nov-14 9:55am

Oh, does he mean suppressing errors Ryan? Then this might do:
wb.ScriptErrorsSuppressed = true;

Member 10874313 13-Nov-14 11:20am

When I scrap the documents from IE, if the alert() function appears then my application gets freeze.

[no name] 13-Nov-14 12:19pm

You could set your own handler and run your method on another thread, this would stop the freezing, but its not really a solution to addressing your issue.

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