EXT.NET 布局有问题 MVC

代码如下：

 @(Html.X().Viewport().Items(p =>
{
    p.Add(new Panel() { Title = "西", Region = Region.West });
    p.Add(new Panel() { Title = "东", Region = Region.East });
    p.Add(new Panel() { Title = "北", Region = Region.North });
    p.Add(new Panel() { Title = "中间", Region = Region.Center });
    p.Add(new Panel() { Title = "南", Region = Region.South });
}))

http://blog.csdn.net/zengshuqin/article/details/20638457