Ask to my C# application to wait until an action is taken on a Javascript Alert using mshtml

Posted on 2008-10-23
Last Modified: 2013-12-17
Hi I am bulding an application that opens an IE browser and fill fields out automaticaly using Microsoft.mshtml but when it comes to click on the Next button an Javascript alert open confirming the adress with a yes/no.

How to, I either tell the application to click Yes automaticaly then wait the action to click on the Next button again

My main issue is to wait till the user click yes on the alert windows then tell the application to click on the next button again.

If you could fix both of my problem, it would be awsome.

any ideas??


Here is my code snippet:
Object o = null;

            Object URL = "";

            mshtml.HTMLDocumentClass doc;

            InternetExplorer ie = new InternetExplorer();

            ie.Visible = true;

            ie.Navigate2(ref URL, ref o, ref o, ref o, ref o);

            while (ie.ReadyState != SHDocVw.tagREADYSTATE.READYSTATE_COMPLETE)





            // get the document

            doc = (mshtml.HTMLDocumentClass)ie.Document;

            mshtml.HTMLInputElementClass el = null;

            // Login

            ieValue("ctl00$CPPC$Username", "username", el, doc); //

            ieValue("ctl00$CPPC$Password", "password", el, doc); //

            ieClick("ctl00$CPPC$imgLogin", el, doc); //         

                // Check if shipTo Canada, Else fill field, show Browser

                if (d1_ctl00_CPPC_ctrlShipToAddress_ddlCountry.Text == "Canada")


                    // Filling text box from the first page.

                    fillTextBox("p1_", el, doc);

                    // Wait If Have to change Shipped From

                    if (ch_fromDefault.Checked != true)


                        ieClick("ctl00$CPPC$btnNext", el, doc); //

//this is at this point that the alert appear. After clicking yes. I need to call ieClick("ctl00$CPPC$btnNext", el, doc); // again




                        ie.Visible = true;

                        ieJavascript("ctrlShipFromAddress_Edit();", el, ie);






                    fillTextBox("p1_", el, doc);




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Question by:maxleb

Accepted Solution

AshleighGreen earned 500 total points
Comment Utility

Get the user to confirm (Yes/No) with a confirmation box.

var answer = confirm("Do you want to click next?"

you can then use answer:
  //click button that causes page load

That way the action only happens if the user clicks ok in the confirmation box.

I know what I've written is in javascript, but it should be pretty easy to convert to mshtml if required. You could also leave it as JS and make it a function you call from mshtml. Plenty of options, but that's the general technique I'd recommend using to trigger .net actions such as confirmation boxes from javascript.

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