Is it possible to use a variable number in the name of a variable name?

Question

(using WPF) Is it possible to use the number of a TextBox to select the parameter name? For example, the user can put 0,1,2 or 3 as text in the TextBox:

private void button1_Click(object sender, RoutedEventArgs e)
{
    int test = int.Parse(textBox1.Text);

    string nr1 = "this string is 1";
    string nr2 = "this string is 2";
    string nr3 = "this string is 3";

    MessageBox.Show();
}

Now for MessageBox.Show(); in want to put something as nr(test)
Would something like this be possible?

Answer 1

Why not use a Dictionary ?

var dict = new Dictionary<int,string>();
dict.Add(1,"String Number 1");
dict.Add(2,"String Number 2");
dict.Add(3,"String Number 3");

int test = int.Parse(textBox1.Text);
MessageBox.Show(dict[test]);