工具>选项

勾选此对话框底部的框:显示所有设置.

HTML设计器>启用HTML设计器

您可能需要重新启动VS2010.

Tools > Options

Tick the box at the bottom of this dialog: Show all settings.

HTML Designer > Enable HTML designer

You will probably need to restart VS2010.

打开vs 2010，首先进入文件并选择新的网页，打开网页后进入解决方案资源管理器窗口，选择项目并右键单击在那里

在那选择添加新项目，您可以找到default.aspx页面

open your vs 2010 and first go in file and choose new web page after open the web page go in solution explorer window and select your project and right click there

in that choose add new item there you can find default.aspx pages