ASP to ASP.NET migration can be done by just changing extension from .asp to .aspx. But before transporting or migrate an .asp file to .aspx, you might think twice necessity of changing file. The first advantage is that ASP.NET applications can handle two to three times request per second as compared to ASP applications. This will certainly increase performance of ASP.NET applications. The second advantage will be that all processes are monitored by ASP.NET runtime so that if any one process leaks, a new process can be created in its place. This will help ASP.NET applications to be continuously available to manage requests.

The class is an object-oriented programming term to refer to a data structure that describes an object or a data member. The .Net Framework has an exclusive set of class libraries such as data access, XML support, directory services, regular expression, and queuing support.

The data access class library provides data access ASP.NET Classes to connect to SQL Server or any OLEDB provider. The XML support class library has XML Classes go beyond capability of MSXML. The directory services library is used to access Active Directory/LDAP using ADSI. The regular expression library supports all above mentions ASP.NET Classes any more than that it also supports Perl 5.

All above mentioned class libraries use CLR base class libraries for common functionality. These base class libraries can be divided into six categories:

• Collections: Used to preserve a collection of values or objects in memory. The three commonly used collections ASP.NET Classes are ArrayList, HashTables, and SortedList. The System.Collections namespace is used to derive collections ASP.NET Classes.