Retrieving context menus from the form

I have the following code which is a private method inside the form and retrieve all context menus from the form. I feel, that it is not that concise as it should be. Would be grateful for any suggestions.

private IEnumerable GetContextMenus()
    {
        var type = this.GetType();
        var fields = type.GetFields(BindingFlags.NonPublic | BindingFlags.Instance);
        var contextMenus = fields.Where(f => f.GetValue(this).GetType() == typeof(ContextMenuStrip));
        var menus = contextMenus.Select(f=> f.GetValue(this));
        return menus.Cast();        
    }

I can't imagine why do you do this via Reflection, I believe the same can be done by walking through Controls tree. Your method will not work if context menu has property Generate member set to false in designer.

var contextMenus = fields.Where(f => f.GetValue(this).GetType() == typeof(ContextMenuStrip));
var menus = contextMenus.Select(f=> f.GetValue(this));
return menus.Cast();

Can be replaced with:

return fields.Select(f => f.GetValue(this)).OfType();

StackExchange Code Review Q#1082, answer score: 2