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RadControls for ASP.NET are no longer supported (see this page for reference). In case you have inquiries about the Telerik ASP.NET AJAX controls, post them in the pertinent ASP.NET AJAX forums.

Not answered RadEditor for ASP.NET does not work properly in Firefox 6

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  • Posted on Aug 22, 2011 (permalink)

    RadEditor Classic treats Firefox 6 as an incompatible browser and it displays as a textarea in this browser.

    To workaround this issue put the following code in the code file for your page where you have a RadEditor instance:

    protected void Page_Load(object sender, EventArgs e)
    {
        if (Request.Browser.Browser.ToLowerInvariant() == "firefox")
        {
            System.Reflection.FieldInfo browserCheckedField = typeof(RadEditor).GetField("_browserCapabilitiesRetrieved", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
            browserCheckedField.SetValue(RadEditor1, true);
            System.Reflection.FieldInfo browserSupportedField = typeof(RadEditor).GetField("_isSupportedBrowser", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
            browserSupportedField.SetValue(RadEditor1, true);
        }
    }

    , where RadEditor1 is your RadEditor instance.

    Note that the code might not work in a lower trust environment. If you get an error about security, you will need to add the following code in your application’s Web.config file (in the configuration/system.web section):

    <trust level="Full" originUrl=".*" />


    Another option is to migrate to RadEditor for ASP.NET AJAX in which this problem does not occur.

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