Evil Razor scoping trick

gistfile1.cs

public delegate IDisposable ViewScope();
public static class Scope {
	public static readonly ViewScope StateOfEvil = new object().EnterScope;

	private static IDisposable EnterScope(this object id) {
		HttpContext.Current.Items.Add(id, null);
		return new Disposable(() => HttpContext.Current.Items.Remove(id));
	}
}

public static class ScopeExtensions {
	public static bool IsActive(this ViewScope scope) {
		return HttpContext.Current.Items.Contains(scope.Target);
	}
}

Usage:

@using (Scope.StateOfEvil()) {
    @: Active? @Scope.StateOfEvil.IsActive()
}