Usefull Linl for SQL Server 2000/2005 msdn-http://msdn2.microsoft.com/en-us/library/aa237869(SQL.80).aspx

Using SqlHelper in .NET application. The SqlHelper Class is present in the Microsoft.ApplicationBlocks.Data.dll . Which is free download application released from Microsoft ( http://download.microsoft.com/download/VisualStudioNET/daabref/RTM/NT5/EN-US/DataAccessApplicationBlock.msi) .After Installation compile the Application which is found in Start-->Microsoft Application Blocks for .NET -->DataAccess --> and select your application.
and build it and Dll will the generated in the Bin folder make it as referance in your application .the example for the Application is in http://aspnet.4guysfromrolla.com/articles/070203-1.aspx

101 Samples for C#.net

http://www.microsoft.com/downloads/details.aspx?familyid=08e3d5f8-033d-420b-a3b1-3074505c03f3&displaylang=en

Some usefull Link for OOPS

1. OOPS Part I
http://www.c-sharpcorner.com/Code/2005/June/OOPSand.NET1.asp
2. OOPS Part II

http://www.c-sharpcorner.com/Code/2005/June/OOPSand.NET2.asp

Improving .NET Application Performance .This Link Gives you a Wonderfull Document from Microsoft .
http://www.microsoft.com/downloads/details.aspx?familyid=8A2E454D-F30E-4E72-B531-75384A0F1C47&displaylang=en

The main impact on Performance and Scalalility of the .Net application are

Memory Misuse
Resource Cleanup
Improper use of threads
Abusing shared resources
Type Conversions
Misuse of Collections
Inefficeient Loops

Use full link to prepare for Interview .NET FAQ http://www.codeproject.com/useritems/dotnetinterviews.asp

Which OOPS concept is not possiable in C#?Why?

How to solve the problem of versioning while coding?
Example: we have two version of software one is enterprise and another is professional .How to have the two version of code in same solution?

How to run your Appliaction which you have developed in MS platform in LINUX