问(C#) -在数组中存储在拆分之间的每个单词

EN

exampleArray[0] = 'hello' 
exampleArray[1] = 'my'
exampleArray[2] = 'name'
exampleArray[3] = 'is'
exampleArray[4] = 'lavi'

private void button2_Click(object sender, EventArgs e)
    {
        listBox1.Items.Clear();
        OpenFileDialog ofd = new OpenFileDialog();
        ofd.Filter = "Text Files|*.txt";
        DialogResult result = ofd.ShowDialog();

        if(result == DialogResult.OK)
        {
            StreamReader textfile = new StreamReader(ofd.FileName); 

            string s = textfile.ReadToEnd();

            string[] split = s.Split(':', '\n');

            foreach (string word in split)
                textBox1.Text = word[0].ToString();
                //listBox1.Items.Add(word);


            ofd.Dispose();
        }