Why does ResizeArray not work in my code?

Question

I have a problem with the code:

namespace hello
{
    public class Program
    {
        public static void Main(string[] args)
        {
            int xx = 5;
            string[,] myArray = new string[1, 5];
            if (xx > 4)
            {
                ResizeArray(ref myArray, 4, 5);
            }
            else
            {
                ResizeArray(ref myArray, 2, 5);
            }
        }
         void ResizeArray(ref string[,] original, int rows, int cols)
        {
            string[,] newArray = new string[rows, cols];
            Array.Copy(original, newArray, original.Length);
            original = newArray;
        }
    }
}

I get the error message:

An object reference is required for the non-static field, method, or property 'hello.Program.ResizeArray(ref string[,], int, int)'

Possible duplicate of [C# error: "An object reference is required for the non-static field, method, or property"](https://stackoverflow.com/questions/10264308/c-sharp-error-an-object-reference-is-required-for-the-non-static-field-method) — tkausl, Jun 23 '19 at 10:06
You need to make `ResizeArray` static, since you call it from a static context (your `Main` method). — Tobias Tengler, Jun 23 '19 at 10:06

score 1 · Accepted Answer · answered Jun 23 '19 at 10:23

1

Static members can't access non-static member without creating an instance. You just need:

static void ResizeArray(ref string[,] original, int rows, int cols)

answered Jun 23 '19 at 10:23

Saeid Amini

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Why does ResizeArray not work in my code?

1 Answers1