Arrays Vs ArrayLists

Arrays	ArrayLists
These are strong type collection and allow to store fixed length	Array Lists are not strong type collection and size will increase or decrease dynamically
In arrays we can store only one datatype either int, string, char etc…	In arraylist we can store all the datatype values
Arrays belong to System.Array namespace string[] arr=new string[2]; arr[0] = "welcome"; arr[1] = "Aspdotnet-Sendhilkumar";	Arraylist belongs to System.Collection namespaces ArrayList strarr = new ArrayList(); strarr.Add("welcome"); // Add string values strarr.Add(10);   // Add integer values strarr.Add(10.05); // Add float values