What is the difference between Array and ArrayList?

Hi,

Simply you can say,

Array is data type oriented. It should be int or float or string or object, etc., but the arraylist is stores everything is type oriented.

The array size has to be defined and arraylist can grow dynamically. But it will take atleast 32 initially.

The Array is type safe and arraylist needs type conversion and leads runtime error.

The Arraylist belongs to system.collection and array belongs to system.Array namespace.

another difference between array list and array is arraylist can dynamically increase or decrease its size were as array size is constant

Hi Richa,

Array is the collection of values of the same data type
the variables in an array is called array elements
Array is a reference type data type
The array structure in System's Memory

Array list is a class .
when you want to access the elements of an array through its index value location in an array,use an ArrayList.
The use of the arraylist is an alternative to the use of the array.
The Methods Of ArrayList class are
1)Add
2)Remove
3)Clear
4)Insert
5)TrimToSize
6)Sort
7)Reverse

Please refer the below links

http://www.c-sharpcorner.com/uploadfile/puranindia/arrays-in-C-Sharp-language/default.aspx

http://www.c-sharpcorner.com/UploadFile/puranindia/C-Sharp-arraylist/



Thanks