Closed 10 years ago. I am wondering what the exact difference is between a Array, ArrayList and a List (as they all have similar concepts) and where you would use one over the other. Example: Array For …

May 19, 2014 · array : similar data typed elements and the size is limited. arraylist : is a collection which is capable of saving different data typed objects,And is growable.

T[] vs. List<T> can make a big performance difference. I just optimized an extremely (nested) loop intensive application to move from lists to arrays on .NET 4.0. I was expecting maybe 5% to 10% …

May 30, 2012 · List<T>.AsReadOnly() ArrayList.ReadOnly(ArrayList list); Your question asks about choosing between ArrayList and List<T>, but your example shows an array, which is neither.

Apr 20, 2010 · An ArrayList will use a system array (like Object[]) and resize it when needed. On the other hand, a LinkedList will use an object that contains the data and a pointer to the next and …

Feb 22, 2010 · What is the difference between ArrayList and List<> in C#? Is it only that List<> has a type while ArrayList doesn't?

Jan 5, 2009 · I often use an ArrayList instead of a 'normal' array[]. I feel as if I am cheating (or being lazy) when I use an ArrayList, when is it okay to use an ArrayList over an array?

Jul 10, 2018 · string[,] results = new string[20, 2]; But I would like to be able to use some of the features in a list or arraylist like being able to add and delete elements.

Jan 12, 2009 · A List uses an internal array to handle its data, and automatically resizes the array when adding more elements to the List than its current capacity, which makes it more easy to use than an …

May 25, 2012 · An array is a low-level data structure that essentially maps to a region in memory. An ArrayList is a variable length list implemented as an array of object that is re-allocated as the list …