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POgetElementById on element within an iframe
 

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    <p>My current code works on elements outside of an iframe. How should I approach fetching elements within an iframe using getElementById? My end goal is to write text within the the <code>&lt;body id="tinymce"&gt;&lt;p&gt;...&lt;/p&gt;&lt;/body&gt;</code> tags. I am not using a webBrowser control - this is for an external instance of iexplore</p> <p><strong>HTML Sample</strong></p> <p><img src="https://i.stack.imgur.com/7P5AU.png" alt="enter image description here"></p> <p><strong>Code Sample</strong></p> <pre><code>foreach (InternetExplorer ie in new ShellWindowsClass()) { if (ie.LocationURL.ToString().IndexOf("intranet_site_url") != -1) { IWebBrowserApp wb = (IWebBrowserApp)ie; while (wb.Busy) { Thread.Sleep(100); } HTMLDocument document = ((HTMLDocument)wb.Document); // FETCH BY ID IHTMLElement element; HTMLInputElementClass hitem; element = document.getElementById("tinymce"); hitem = (HTMLInputElementClass)element; hitem.value = first_name; // FETCH BY ID in IFRAME IHTMLFramesCollection2 hframes = document.frames; for (int i = 0; i &lt; hframes.length; i++) { object ref_index = i; IHTMLWindow2 currentFrame = (IHTMLWindow2)hframes.item(ref ref_index); if (currentFrame != null) { MessageBox.Show(currentFrame.name); // what to do from here? } else MessageBox.Show("Null"); } } } </code></pre> <p><strong>- update idea</strong> Chance of adapting my idea below?</p> <pre><code>if (currentFrame != null) { MessageBox.Show(currentFrame.name); HTMLDocument document_sub = ((HTMLDocument)currentFrame.document); IHTMLElement element_sub; HTMLInputElementClass hitem_sub; element_sub = (document_sub.getElementById("tinymce")); hitem_sub = (HTMLInputElementClass)element_sub; try { hitem_sub.value = first_name; // the above will produce... // InvalidCastException: Unable to cast COM object of type 'mshtml.HTMLBodyCLass' to class type 'mshtml.HTMLInputElementClass' } catch { } } </code></pre>
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    1. COIs the subframe in a different origin than the parent document? If so, you can't simply reach in and grab its document object due to how the SameOriginPolicy restriction was implemented. You instead have to grab the subframe using its IOleContainer interface...
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    2. CONo, same origin - it is exactly how it is shown above in the html sample. I've never seen TinyMCE presented in markup this way and it doesn't make sense to me but I have to work with it.
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    3. CO@PatrickAlexson, it might be easier to inject some JavaScript to get the DOM element you need, like [this](http://pastebin.com/iM5829MM) (originally from [here](http://stackoverflow.com/questions/18342200/how-do-i-call-eval-in-ie-from-c/)). You should be able to do the same in C# using `dynamic`.
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