I found a solution for displaying an iframe in a DetailView. Here's the View Controller I used to accomplish this. using DevExpress.ExpressApp;
using DevExpress.ExpressApp.HtmlPropertyEditor.Web;
using System; namespace Learning_Objectives_Creator.Module.Web.Controllers
{
// For more typical usage scenarios, be sure to check out https://documentation.devexpress.com/eXpressAppFramework/clsDevExpressExpressAppViewControllertopic.aspx.
public partial class HTMLEditorController : ViewController
{
public HTMLEditorController()
{
InitializeComponent();
// Target required Views (via the TargetXXX properties) and create their Actions.
}
protected override void OnActivated()
{
base.OnActivated();
// Perform various tasks depending on the target View.
}
protected override void OnViewControlsCreated()
{
base.OnViewControlsCreated();
// Access and customize the target View control.
}
protected override void OnDeactivated()
{
// Unsubscribe from previously subscribed events and release other references and resources.
base.OnDeactivated();
} private void HTMLEditorController_Activated(object sender, EventArgs e)
{
ASPxHtmlPropertyEditor propertyEditor =
((DetailView)View).FindItem("WebContentAsset") as ASPxHtmlPropertyEditor;
if (propertyEditor != null)
{
if (propertyEditor.Control != null)
{
AllowIframe(propertyEditor);
}
else
{
propertyEditor.ControlCreated +=
new EventHandler(HTMLEditorController_ViewControlsCreated);
}
}
}
private void AllowIframe(ASPxHtmlPropertyEditor propertyEditor)
{
if (propertyEditor.ViewEditMode == DevExpress.ExpressApp.Editors.ViewEditMode.Edit)
{
propertyEditor.Editor.SettingsHtmlEditing.AllowIFrames = true;
propertyEditor.Editor.SettingsHtmlEditing.AllowYouTubeVideoIFrames = true;
propertyEditor.Editor.SettingsHtmlEditing.AllowScripts = true;
propertyEditor.Editor.SettingsHtmlEditing.AllowHTML5MediaElements = true;
propertyEditor.Editor.SettingsHtmlEditing.AllowObjectAndEmbedElements = true;
propertyEditor.Editor.SettingsHtmlEditing.AllowEditFullDocument = true;
propertyEditor.Editor.SettingsHtmlEditing.EnablePasteOptions = true;
propertyEditor.Editor.SettingsHtmlEditing.AllowedDocumentType = DevExpress.Web.ASPxHtmlEditor.AllowedDocumentType.Both;
propertyEditor.Editor.SettingsHtmlEditing.AllowFormElements = true;
propertyEditor.Editor.SettingsHtmlEditing.AllowIdAttributes = true;
propertyEditor.Editor.SettingsHtmlEditing.AllowStyleAttributes = true;
propertyEditor.Editor.Height = 1000; }
} private void HTMLEditorController_ViewControlsCreated(object sender, EventArgs e)
{
AllowIframe((ASPxHtmlPropertyEditor)sender); }
}
} | 
