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I am using a C# WebBrowser to navigate to a page. After navigate to that page I extract some link from its source code and then start to navigate to those sub_links in a loop which I get from its parent url.

On every sub_links there is a link which is look like: 

    <a onclick="sysMT('SYSext.Sup_Filetype','type','SYSext.Sup_Filename','Filename.exe','SYSext.Sup_Referer','http://abc.com');"
id="ctl00_UCDownloadFile1_Accept" 
href="javascript:__doPostBack('ctl00$UCDownloadFile1$Accept','')">Accept</a>

the id of a button is "ctl00_UCDownloadFile1_Accept" is same in all its sub_links. When I click on above link manually a file start to download. I want to "click" on above button using c# code. I am able to click on above button using this code on webBrowser1_DocumentCompleted event: 

HtmlElement elementById = webBrowser1.Document.GetElementById("ctl00_UCDownloadFile1_Accept");
            if (elementById != null)
            {
                elementById.InvokeMember("click");
                Application.DoEvents();
            }

But a script error message box appear saying 

"An error has occured in the script on this page. 
Error: The value of the property 'sysMT' is null or undefined, not a Function object.
Do you want to continue running script on this page? 
Yes     NO"

Not able to understand what I am missing in this. Did Parent url make some cookie which helps to download the file? Don't know how to download that file and also download file link.

I am new to C# WebBrowser.

Update

I am able to remove a script error message box using 

webBrowser2.ScriptErrorsSuppressed = true;

But not able to download all file which are their in sub links i.e.

If I get 3 links from a parent url, then I navigate to first link, click on Accept link and then a box appear asking for a action to RUN SAVE CANCEL. But I get this box only for third (last) link. How to overcome with this problem, I want to download all file from each links without any prompt which asking for RUN SAVE CANCEL. Directly SAVE a file.

Manish
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  • Apparenty, you are missing some Javascript, where `sysMT` is defined. – Bart Friederichs Aug 22 '13 at 07:15
  • The way you call `Application.DoEvents()` in the loop is wrong (it's called "busy waiting"). Check [this](http://stackoverflow.com/questions/18303758/can-i-wait-for-a-webbrowser-to-finish-navigating-using-a-for-loop). – noseratio Aug 22 '13 at 09:52

0 Answers0