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IE8 Error in RadEditor

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Editor

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answered on 04 Dec 2010, 06:11 PM

Hi thanks for the reply, our support ran out just before that version, in fact it is the only version that we cannot download. Is there any hotfix or workaround that wouldnt involve me upgrading / renewing the support package. The price to fully renew looks awful expensive to just get things working in IE8.

I realise and fully understand that we are not eligable for future major upgrades but IE8 was, I believe released while we were in support and this means we cannot use the control at all (or have to downgrade).

We have always been a big fan of telerik and would love to continue using the RAD editor (rather than downgrade back to a previous version that works in IE8 or switch to something free to get IE8 support).

Is there no way you could help us out by either allow us to download the later IE8 supported version or at least advise a workaround?

answered on 06 Dec 2010, 01:38 PM

iecompatibilityhandler.zip

Hello David,

Yes, there is a solution.

The problem is caused by the RadFormDecorator control in the editor dialogs, which does not support IE8 in version 2008.2.1001. If you do not wish to upgrade, you can create a custom HTTP dialog handler, which inherits the default Telerik.Web.UI. DialogHandler and override the OnLoad() method, where you can try adding the

<meta http-equiv="X-UA-Compatible" content="IE=7" />

tag to the dialog page header. By default IE 8 should render all child iframes (RadWindow) in compat mode as well if the main page has the meta tag:

C# code

        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);
            HtmlMeta hm = new HtmlMeta();
            hm.HttpEquiv = "X-UA-Compatible";
            hm.Content = "IE=7";
            Page.Header.Controls.Add(hm);
        }

The tags below should be also added to the web.config file:

For IIS6:
<system.web>
                ...
                <httpHandlers>
                                ...
                                
                                <add path="Telerik.Web.UI.DialogHandler.aspx" verb="*" type="Telerik.Admin.IECompatibilityHandler" validate="false"/>
                                ...
                </httpHandlers>
                ...
</system.web>

For IIS7:
<system.webServer>
                ...
                <handlers>
                                ...
                                
                                <add name="Telerik.Web.UI.DialogHandler.aspx" path="Telerik.Web.UI.DialogHandler.aspx" verb="*"                                 type="Telerik.Admin.IECompatibilityHandler" />
                                ...
                </handlers>
                ...
</system.webServer>

Regards,
Rumen
the Telerik team

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