Just Wondering!!!

Just had a strange problem this week....
400 records changed the status from OK to KI.
IT is possible. If it is how.....how can it happen!!!!!

Class

Abstract Class
===========
Here inheritance is possible, instantiating object is not possible
The Abstract class Abstract method will be implement only in derived class by OVERRIDE.
At least one Abstract method is must and should in Abstract Class.



Interface
=======
It’s a pure abstract class.
It has only Abstract methods no implementation. Implement methods through class.

Can inherit can’t create object to interface.

Public Access modifier not private

It’s a indicator. It indicates what, class must provide after inherited the interface. OVERRIDE no need.

Multiple inheritance is possible through Interface only in C#.

ASP.NET features

ASP.NET feature supports are as follows :-
Better Language Support
1.New ADO.NET Concepts have been implemented.
2.ASP.NET supports full language (C# , VB.NET,C++) and not simple scripting
like VBSCRIPT..Better controls than ASP
3. ASP.NET covers large set’s of HTML controls..
4.Better Display grid like Datagrid , Repeater and datalist.Many of the display
grid have paging support.
5.Controls have event supports
6.All ASP.NET controls support events.
7.Load, Click and Change events handled by code makes coding much simpler
and much better organized.
Compiled Code
The first request for an ASP.NET page on the server will compile the ASP.NET code and
keep a cached copy in memory. The result of this is greatly increased performance.
Better Authentication Support
ASP.NET supports forms-based user authentication, including cookie management and
automatic redirecting of unauthorized logins. (You can still do your custom login page
and custom user checking).
User Accounts and Roles
ASP.NET allows for user accounts and roles, to give each user (with a given role) access
to different server code and executables.
High Scalability
Much has been done with ASP.NET to provide greater scalability.
Server to server communication has been greatly enhanced, making it possible
to scale an application over several servers. One example of this is the ability
to run XML parsers, XSL transformations and even resource hungry session
objects on other servers.
Easy Configuration
Configuration of ASP.NET is done with plain text files.
Configuration files can be uploaded or changed while the application is running.
No need to restart the server. No more metabase or registry puzzle.
Easy Deployment
No more server restart to deploy or replace compiled code. ASP.NET simply redirects all
new requests to the new code.