How to edit/update arraylist values in c#

Question

I am completely new to c#, so please help me with the following problem.

I have an array list with some string elements.I want to edit/update a particular element at a particular index.

Can anyone please tell me a method, other than removing and then adding the edited element at the specific index?

Please find my try below[Changed the first element from "Black" to "Grey"]

ArrayList al = new ArrayList(){ "Black", "White", "Red"};

al.RemoveAt(0);

al.Insert(0,"Grey");

Why would you ever use ArrayList anyway? It's deprecated in favour of the much better List<T> — Charlieface
– Charlieface, Commented Oct 31, 2021 at 19:59
Just for learning purpose, as i told i am new to C#. Thank you. — R4SHEYS
– R4SHEYS, Commented Oct 31, 2021 at 20:17

user17289254 · Accepted Answer · 2021-10-31 19:48:52Z

2

Try this:

ArrayList al = new ArrayList(){ "Black", "White", "Red"};
al[0] = "Grey";

answered Oct 31, 2021 at 19:48

user17289254

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1 Comment

Thank you, Never had a thought in this way,

Russell Horwood · Accepted Answer · 2021-10-31 19:47:46Z

1

The ArrayList type has an indexer you can use.

ArrayList al = new ArrayList { "Black", "White", "Red"};

al[0] = "Grey";

For more information on indexers see:

answered Oct 31, 2021 at 19:47

Russell Horwood

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