In SharePoint we have the following 2 types of pages.

  1. Site Page
  2. Application Page

Site Page

Application Page

Now here we will learn how to add a new Application Page and how to show this in SharePoint.

In your Visual Studio solution right-click then select Add New Item-> Add an Application Page.
Now right-click on your solution then select Deploy.

Deploy
Image 1.

After successfully deploying check your page in the 14 hive directory.

14 hive directory
Image 2.

Now open your SharePoint Site then click Site Actions then click Site Settings then click Look and Feel then click Top Link Bar.

site action
Image 3.

Click on the new Navigation Link.

Navigation Link
Image 4.

Here provide the path of your Application Page and name then click Ok.

Application page
Image 5.

Now click on the Link and see your Application Page:

application page in sharepoint
Image 6.