ASP.Net MVC 3 type of Segment Controller Segment Action Segment Parameter Segment
There are 3 segments of the default route in an MVC application.They are: The 1st segment is the Controller Name. Example: search The 2nd segment is the Action Method Name. Example: label The 3rd segment is the Parameter passed to the Action method. Example: Parameter Id - MVC
Controller Name ,Action Name and Parameter default
http://www.asp.net/mvc/overview/older-versions-1/controllers-and-routing/asp-net-mvc-routing-overview-cs
http://dotnet-munesh.blogspot.in/2015/05/aspnet-mvc-routing-with-example.html