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PORunning a JavaScript function in an instance of Internet Explorer
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  1. PORunning a JavaScript function in an instance of Internet Explorer
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    copied!<p>I'm using </p> <pre><code>SHDocVw.InternetExplorer ie = new SHDocVw.InternetExplorer() </code></pre> <p>to control/automate an instance of Internet Explorer. On certain pages I'd like to run a JavaScript function (<code>init()</code>). It seems the best way to do this is to use an <code>HtmlDocument</code>'s <code>InvokeScript</code> method and I've been trying the following with no luck:</p> <pre><code>void ie_DocumentComplete(object pDisp, ref object URL) { System.Windows.Forms.HtmlDocument doc = ie.Document; doc.InvokeScript("init"); } </code></pre> <p>Which fails because <code>doc</code> is null. I can't seem to get a <code>System.Windows.Forms.HtmlDocument</code> from <code>ie.Document</code>. Besides trying the above, I've also tried:</p> <pre><code>System.Windows.Forms.HtmlDocument doc2 = (System.Windows.Forms.HtmlDocument)ie.Document; </code></pre> <p>and</p> <pre><code>System.Windows.Forms.HtmlDocument doc2 = ie.Document as System.Windows.Forms.HtmlDocument; </code></pre> <p>Any ideas on how I can get this to work - or an even better way to run scripts on the page?</p> <p>Thanks!!</p> <p><strong>EDIT</strong>:</p> <p>Another way to run a JavaScript function appears to be:</p> <pre><code>SHDocVw.InternetExplorer ie = new SHDocVw.InternetExplorer() mshtml.HTMLDocument doc = ie.Document; mshtml.IHTMLWindow2 win = doc.parentWindow as mshtml.IHTMLWindow2; win.execScript("init();", "javascript"); </code></pre> <p>But the line</p> <pre><code>mshtml.IHTMLWindow2 win = doc.parentWindow as mshtml.IHTMLWindow2; </code></pre> <p>throws an error that it is an invalid cast (<code>InvalidCastException</code>) - even though IntelliSense (and MSDN) say <code>doc.parentWindow</code> is a <code>IHTMLWindow2</code>. Any ideas? (Also I've made sure a page has been fully loaded before running that code)</p>
 

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