sorry i do not think i understand. I entered this code into a c# application:
Code:
namespace test
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            TextBox[] textBoxArray = new TextBox[10];
            for (int i = 1; i < 5; i++)
            {
                textBoxArray[i].Text = "whatever";
            }
        }
    }
}
but i get a nullreferenceexeption error.

TheGreatCthulhu the code you gave, gave me two errors:
Error 1 The best overloaded method match for 'System.Collections.Generic.List<System.Windows.Forms.TextBox>.Add(System.Windows.Forms.TextBox)' has some invalid arguments C:\Users\Dave\AppData\Local\Temporary Projects\test\Form1.cs 26 21 test
Error 2 Argument 1: cannot convert from 'System.Windows.Forms.Control' to 'System.Windows.Forms.TextBox' C:\Users\Dave\AppData\Local\Temporary Projects\test\Form1.cs 26 30 test