C#

Introduction to OOPS

Const Vs Read only

.ToString() Vs Convert.ToString()

string Vs stringBuilder

Dispose Vs Finalize 

Var Vs Dynamic Keywords

Array Vs ArrayList Vs List

Exception Handling

Extension Methods

Dictionary Vs Hashtable

Dictionary

Boxing Vs UnBoxing

Static Class

Named vs Optional Parameters

Use of Private Constructor

Using block

Sealed Class and Sealed Methods

Interface

Abstract Class