C# resize multidimensional array

void ResizeArray<T>(ref T[,] original, int newCoNum, int newRoNum)
    {
        var newArray = new T[newCoNum,newRoNum];
        int columnCount = original.GetLength(1);
        int columnCount2 = newRoNum;
        int columns = original.GetUpperBound(0);
        for (int co = 0; co <= columns; co++)
            Array.Copy(original, co * columnCount, newArray, co * columnCount2, columnCount);
        original = newArray;
    }

Source: stackoverflow.com

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