Generics in .net

Question

Hi..........to one and all............!!!!!!!!!!!!!! What is generics in .net?.. what is need of generics rather then array lists,? how to use generics in .net 2.0 version of asp.net???

Vulpes · Answer

Non-generic collections such as ArrayList and Hashtable had a couple of problems. Firstly, everything was stored internally as type 'object'. This was bad for value types (such as int, double, bool etc) because they had to be 'boxed' on the heap when they were stored and unboxed when they were retrieved, a relatively slow operation which also put pressure on the garbage collector. Moreover, when any type of value (reference type or value type) had to be retrieved it needed to be cast back to its actual type before anything useful could be done with it. Generic eliminates these problems. List and Dictionary both store their elements as their actual type and so no boxing or casting is needed.

Senthilkumar · Answer

Hi, Generics is strongly type in .net, because it is type oriented and will not give any runtime error. Because it will do it in compile time. There was some problem in .net 1.1, where collection object needed the typecasting and was giving error. The Generics has the following syntax: List lint = new List (); List lfloat = new List (); List lstr = new List ();

Krishna Garad · Answer

Refer this article on this forum http://www.c-sharpcorner.com/UploadFile/sdhar8po/GenericsInCSharp11152005055344AM/GenericsInCSharp.aspx

Generics in .net

Answers (3)