The following bit of code is to send a string of data to the usb port. How can I modify the code so I only send one byte of data to the usb port instead of a string?

private void usb_OnSpecifiedDeviceArrived(object sender, EventArgs e)
{
this.lb_message.Items.Add("My device was found");

//setting string form for sending data
string text = "";
for (int i = 0; i < this.usb.SpecifiedDevice.OutputReportLength - 1; i++)
{
text += "000 ";
}
this.tb_send.Text = text;
}

private void btn_send_Click(object sender, EventArgs e)
{
try
{
string text = this.tb_send.Text + " ";
text.Trim();
string[] arrText = text.Split(' ');
byte[] data = new byte[arrText.Length];

for (int i = 0; i < arrText.Length; i++)
{
if (arrText[i] != "")
{
int value = Int32.Parse(arrText[i], System.Globalization.NumberStyles.Number);
data[i] = (byte)Convert.ToByte(value);
}
}

if (this.usb.SpecifiedDevice != null)
{
this.usb.SpecifiedDevice.SendData(data);
}
else
{
MessageBox.Show("Sorry but your device is not present. Plug it in!! ");
}

}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}