Internet Explorer 9 RC stops my WinForms WebBrowser control to work in editing mode

Question

Using the IHtmlDocument2.designMode property set to On to switch a WebBrowser control hosted on a Windows Forms form to editing mode suddenly stopp

Answer 1

I use HTML Editor Control, I solved this problem adding the DocumentComplete event

private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
    (((sender as WebBrowser).Document.DomDocument as IHTMLDocument2).body as HTMLBody).contentEditable = "true"; 
}

Answer 2

Another Code Project user suggested to use the following code:

First, add event DocumentCompleted:

private void SetupEvents()
{
    webBrowser1.Navigated += webBrowser1_Navigated;
    webBrowser1.GotFocus += webBrowser1_GotFocus;
    webBrowser1.DocumentCompleted += this.theBrowser_DocumentCompleted;
}

Then write the function:

private void theBrowser_DocumentCompleted(
    object sender, 
    WebBrowserDocumentCompletedEventArgs e)
{
    webBrowser1.Document.Write(webBrowser1.DocumentText);
    doc.designMode = "On";
}

Although I did not test this, I want to document it here for completeness.

Answer 3

It's fixed if the property is set after the document is loaded

private void DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{

    IHTMLDocument2 Doc = Document.DomDocument as IHTMLDocument2;
    Doc.designMode = @"On";
}

Answer 4

I was also able to get this to work using the following inside the DocumentCompleted event:

IHTMLDocument2 Doc = browserControl.browser.Document.DomDocument as IHTMLDocument2;
if (Doc != null) Doc.designMode = @"On";

Thanks everyone!

Answer 5

Just want to add that I am also unable to enter designmode (using a WebBrowser control in my case). This was not an issue in the beta. Definitely new with the RC.

Answer 6

We just need an empty editable control. I did however step through debugger and add value to the control's InnerHtml and it displayed it fine, and I could edit it.

Small update, we were able to get the control editable using this line also:

browserControl.browser.Document.Body.SetAttribute("contentEditable", "true");

This allows us to avoid referencing mshtml, (don't have to include Microsoft.mshtml.dll)

This lets us avoid increasing our installation size by 8 megs.