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PO.NET: How to make WebBrowser control launch in IE, display HTML, out of process?
 

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  1. PO.NET: How to make WebBrowser control launch in IE, display HTML, out of process?
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    <p>i want to create a WebBrowser control, give it the HTML to display, then make it appear out of process in its own Internet Explorer window.</p> <p>Can it be done?</p> <hr> <ul> <li>yes it has to be out of process</li> <li>i already have a technique that involves writing a temporary file. i want to remove this hack solution</li> </ul> <hr> <p>i have three other questions on stackoverflow running, all working on a tiny segment of making the following code work:</p> <pre><code>public static void SpawnIEWithSource(String szHtml) { IWebBrowser2 ie = (IWebBrowser2)new InternetExplorer(); object mv = System.Reflection.Missing.Value; //special "nothing" value object url = (String)@"about:blank"; ie.Navigate2(ref url, ref mv, ref mv, ref mv, ref mv); mshtml.HTMLDocumentClass doc = (mshtml.HTMLDocumentClass)ie.Document; doc.Write(szHtml); doc.Close(); ie.Visible = true; } </code></pre> <p><strong>Note:</strong> The above code works fine in native apps.</p> <p>i thought i would cut to the chase, and see if anyone has any other ideas, that don't involve the only way i've been able to figure it out.</p> <hr> <p>The hack solution, that uses a temporary file, is:</p> <pre><code>public static void SpawnIEWithSource(String szHtml) { IWebBrowser2 ie = (IWebBrowser2)new InternetExplorer(); object mv = System.Reflection.Missing.Value; //special "nothing" value object url = (String)@"about:blank"; ie.Navigate2(ref url, ref mv, ref mv, ref mv, ref mv); //Todo: Figure out the .NET equivalent of the following //so that it doesn't have to write a temporary file //IDispatch webDocument = ie.Document; //webDocument.Write(szHtml); //webDocument.Close(); String tempFilename = Path.GetTempFileName(); try { //Rename to .htm, or else ie won't show it as actual HTML String htmlFile = Path.ChangeExtension(tempFilename, "htm"); File.Move(tempFilename, htmlFile); //.NET's version of File.Rename tempFilename = htmlFile; //Write string to file StreamWriter writer = new StreamWriter(tempFilename); writer.Write(szHtml); writer.Close(); url = (String)tempFilename; ie.Navigate2(ref url, ref mv, ref mv, ref mv, ref mv); //If we're going to delete the file, then we have to wait for IE to use it //else we delete it before it uses it while (ie.ReadyState != tagREADYSTATE.READYSTATE_COMPLETE) { System.Threading.Thread.Sleep(10); } } finally { File.Delete(tempFilename); } //Make IE Visible ie.Visible = true; } </code></pre>
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