Disable JavaScript Alerts Gecko45 C#

Question

I want to disable all js alert.This code not working gecko 45

geckoWebBrowser1.JavascriptError += (sender, error) => {
    GeckoWebBrowser browser = geckoWebBrowser1;
    string text = "window.alert = function(){};";
    using (AutoJSContext context = new AutoJSContext(browser.Window.JSContext)) {
        string result;
        //toolStripLabel1.Text = "was is loaded?";

        context.EvaluateScript(text, (nsISupports)browser.Window.DomWindow, out result);
    }
};

Answer 1

If you want to disable all alerts, then you need to implement your own nsIPromptService2 where you will override the methods called when an alert happens.

public class FilteredPromptService : nsIPromptService2, nsIPrompt
{
        public void Alert(string dialogTitle, string text)
        {
           //do nothing, 
        }
        //and so on for other alerts/prompts
 }

Bear in mind you also need to register in by calling after you initialize the engine:

PromptFactory.PromptServiceCreator = () => new FilteredPromptService();