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POClick on a link on C# WebBrowser to start download a file and also its link
 

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  1. POClick on a link on C# WebBrowser to start download a file and also its link
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    <p>I am using a <code>C# WebBrowser</code> 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.</p> <p>On every sub_links there is a link which is look like: </p> <pre><code> &lt;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','')"&gt;Accept&lt;/a&gt; </code></pre> <p>the id of a button is <code>"ctl00_UCDownloadFile1_Accept"</code> is same in all its sub_links. When I click on above link manually a file start to download. I want to <code>"click"</code> on above button using c# code. I am able to <code>click</code> on above button using this code on <code>webBrowser1_DocumentCompleted event</code>: </p> <pre><code>HtmlElement elementById = webBrowser1.Document.GetElementById("ctl00_UCDownloadFile1_Accept"); if (elementById != null) { elementById.InvokeMember("click"); Application.DoEvents(); } </code></pre> <p>But a script error message box appear saying </p> <pre><code>"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" </code></pre> <p>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.</p> <p>I am new to C# WebBrowser.</p> <blockquote> <p>Update</p> </blockquote> <p>I am able to remove a script error message box using </p> <pre><code>webBrowser2.ScriptErrorsSuppressed = true; </code></pre> <p>But not able to download all file which are their in sub links i.e.</p> <p>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 <code>RUN SAVE CANCEL.</code> 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 <code>RUN SAVE CANCEL.</code> Directly <code>SAVE</code> a file.</p>
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    1. USManish
    1. USManish
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    1. COApparenty, you are missing some Javascript, where `sysMT` is defined.
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      1. POClick on a link on C# WebBrowser to start download a file and also its link
      1. USBart Friederichs
    2. COThe 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).
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      1. POClick on a link on C# WebBrowser to start download a file and also its link
      1. USNoseratio
 

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