List Collections in C#.Net

List is a generic class in the System.Collections.Generic namespace of the .NET Framework.

It enables you to create a sequence of objects or values of any specific type (T) including built-in types such as int, double or string.

Unlike an array, a List is not fixed in size once created but dynamically increases its size as new elements are added. It's easy to retrieve elements of the List by index (starting from 0) or to insert, change or remove elements.

The .NET framework also provides the non-generic ArrayList class in the System.Collections namespace. This can contain any type of object or value but, in the case of value types (int, double, bool etc) they need to be 'boxed' (i.e. converted to temporary objects) on the heap before they can be stored which has an impact on performance.

When retrieving an element, it also needs to be cast to its actual type as all elements are stored as type 'object'.

Consequently, List is generally a better choice than ArrayList when writing C# code today.

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Vulpes12y ago
List is a generic class in the System.Collections.Generic namespace of the .NET Framework.

It enables you to create a sequence of objects or values of any specific type (T) including built-in types such as int, double or string.

Unlike an array, a List is not fixed in size once created but dynamically increases its size as new elements are added. It's easy to retrieve elements of the List by index (starting from 0) or to insert, change or remove elements.

The .NET framework also provides the non-generic ArrayList class in the System.Collections namespace. This can contain any type of object or value but, in the case of value types (int, double, bool etc) they need to be 'boxed' (i.e. converted to temporary objects) on the heap before they can be stored which has an impact on performance.

When retrieving an element, it also needs to be cast to its actual type as all elements are stored as type 'object'.

Consequently, List is generally a better choice than ArrayList when writing C# code today.

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saurabh mittal12y ago
Hi Venkat

you can refer to this link.it may be help u:
http://www.dotnetperls.com/collections
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Lakshmanan Sethu Sankaranarayan12y ago
Hi Ventak. Please refer the link http://www.tutorialspoint.com/csharp/csharp_collections.htm
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