How to Remove an Element from a Regular Array in C#?

Remove the element from the ordinary array

Q: I need to remove an element from an ordinary object array. Specifically, I want to remove the second element. Is there a way to do the REMOVEAT () method similar to the list?

Answer 1 (use list):

If you are willing to use a list, you can convert the array to a list, remove the element, and then convert it back to the array.

Answer 2 (extension method):

<code class="language-csharp">var foos = new List<foo>(array);
foos.RemoveAt(index);
return foos.ToArray();</code>

As an alternative to using a list, you can use an extension method specialized for this task. This is an example:

With this expansion method, you can remove the second element like this:

<code class="language-csharp">public static T[] RemoveAt<T>(this T[] source, int index)
{
    T[] dest = new T[source.Length - 1];
    if (index > 0)
        Array.Copy(source, 0, dest, 0, index);

    if (index < source.Length - 1)
        Array.Copy(source, index + 1, dest, index, source.Length - index - 1);

    return dest;
}</code>

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