Describe the concept of exception in .Net environment.

NET implements a systemwide, comprehensive  approach to exception handling. As noted in the chapter introduction, instead of an error number, there is an exception object. This object contains information relevant to the error, exposed as properties of the object. Later you’ll see a summary of the properties and the information they expose in a table.

Such an object is an instance of a class that derives from a class named System. Exception. As shown later , a variety of subclasses of System. Exception are used for different circumstances.