Remove Element From Array by String (text) instead of Index

Question

I want to remove the element form the array. Actually I don't know the the index of the element and want to remove through it's value. I have tried a lot but fail. This is the function which i used to add element in the Array

    string [] Arr;
    int i = 0;
    public void AddTOList(string ItemName)
    {
        Arr[i] = ItemName;
        i++;
    }

And I want to remove the element by the value. I know the below function is wrong but I want to explain what I want:

    public void RemoveFromList(string ItemName)
    {
        A["Some_String"] = null;
    }

Thanks

I'm failing to understand how you would add items to an array with the example you have. — The Muffin Man
– The Muffin Man, Commented Dec 18, 2010 at 11:15

Jason Evans · Accepted Answer · 2011-09-27 14:16:07Z

4

If you want to remove items by a string key then use a Dictionary

var d = new Dictionary<string, int>();

d.Add("Key1", 3);

int t = d["Key1"];

Or something like that.

edited Sep 27, 2011 at 14:16

user142162

answered Dec 18, 2010 at 11:19

Jason Evans

29.2k16 gold badges95 silver badges157 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Vlad Over a year ago

perhaps HashSet if the indexed value is not important.

Cheng Chen · Accepted Answer · 2010-12-18 12:15:21Z

2

Array has a fixed size, which is not suitable for your requirement. Instead you can use List<string>.

List<string> myList = new List<string>();
//add an item
myList.Add("hi");
//remove an item by its value
myList.Remove("hi");

answered Dec 18, 2010 at 12:15

Cheng Chen

43.7k18 gold badges118 silver badges184 bronze badges

Comments

Tolgahan Albayrak · Accepted Answer · 2010-12-18 11:19:41Z

1

List<string> list = new List<string>(A);
list.Remove(ItemName);
A = list.ToArray();

and @see Array.Resize and @see Array.IndexOf

answered Dec 18, 2010 at 11:19

Tolgahan Albayrak

1,7792 gold badges13 silver badges13 bronze badges

Comments

Javed Akram · Accepted Answer · 2010-12-18 12:52:26Z

0

You can iterate through every value in array and if found then remove it. Something like this

        string[] arr = new string[] { "apple", "ball", "cat", "dog", "elephant", "fan", "goat", "hat" };
        string itemToRemove = "fan";
        for (int i = 0; i < arr.Length; i++)
        {
            if (arr[i] == itemToRemove)
            {
                arr[i]=null;
                break;
            }
        }

answered Dec 18, 2010 at 12:52

Javed Akram

15.4k28 gold badges86 silver badges121 bronze badges

Collectives™ on Stack Overflow

Remove Element From Array by String (text) instead of Index

4 Answers 4

1 Comment

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

1 Comment

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related