gistfile1.cs

@{
    Func<ModelMetadata, bool> ShouldShow = metadata =>
        metadata.ShowForEdit && !ViewData.TemplateInfo.Visited(metadata);
}
@if (ViewData.TemplateInfo.TemplateDepth > 5) {
    if (Model == null) { 
        @ViewData.ModelMetadata.NullDisplayText 
    } else { 
        @ViewData.ModelMetadata.SimpleDisplayText 
    } 
} else {     
    foreach (var prop in ViewData.ModelMetadata.Properties.Where(ShouldShow)) { 
        if (prop.HideSurroundingHtml) { 
            @Html.Editor(prop.PropertyName) 
        } else { 
            if (string.IsNullOrEmpty(Html.Label(prop.PropertyName).ToHtmlString())==false) { 
                <div class="editor-label">
                    @Html.Label(prop.PropertyName) 
                </div>
            } 
            <div class="editor-field">
                @Html.Editor(prop.PropertyName)  
                @Html.ValidationMessage(prop.PropertyName) 
            </div>
        } 
    } 
} 

This seems to introduce a bug in which viewmodel properties whose names match ViewBag or ViewData properties are overridden. For example, a property called Title will be overriden by the page title.