如何在Web浏览器中查看Visual Studio Designer中的网页

我在Visual Studio上基于ASP.net开发我的网站

当我在visual studio中创建简单的html / jquery网页时我在Visual Studio Designer中看到的不同于呈现给浏览器的页面。



这是VS Designer中的网页：

很清楚屏幕上显示的唯一东西是黑色条带和右箭头



但是当我运行项目时，一切都在浏览器中显示

像这样



我的问题是如何在网页浏览器中查看visual studio designer中的网页

i develop my website based on ASP.net on visual studio
but when i create simple html/jquery webpage in visual studio What i see in Visual studio Designer Different from page that render to the browser .

this is webpage in VS Designer:
As is clear The only thing that is show in the screen is black strip and right arrow

but when i run project ,everything show in browser
like this

my question is how can i view webpage in visual studio designer as seen in web browser