I look that nice documentation about Ext JS 4 applciation architecture. It tells clearly an architecture which contains only one html page, others js.
http://dev.sencha.com/deploy/ext-4.0.7-gpl/docs/index.html#!/guide/application_architecture
If i want to use this library with Asp.Net Mvc, how should my architecture like?
EDIT: I mean that there is a mvc architecture in Ext Js, another one in Asp.net. How to combine these two architecture?
You can check how Dextop is doing that. You should also check this demo app. Source code is available on the GitHub.