how to convert string to byte array in C#

string data = "EDAboard";
 byte[] SerialDataBuffer = Encoding.ASCII.GetBytes(data);

string data = "EDAboard";
 byte[] SerialDataBuffer = Encoding.ASCII.UTF8.GetBytes(data);

OUTBuffer[0] = 0x00;	//The first byte is the "Report ID" and does not get sent over the USB bus.  Always set = 0.
OUTBuffer[1] = 0x37;	//READ_POT command (see the firmware source code), gets 10-bit ADC Value
 for (uint i = 2; i < 65; i++)
     OUTBuffer[i] = SeralDataBuffer[i-2];
if (WriteFile(WriteHandleToUSBDevice, OUTBuffer, 65, ref BytesWritten, IntPtr.Zero))	//Blocking function, unless an "overlapped" structure is used

private void textBox1_TextChanged(object sender, EventArgs e)
{
  byte[] bArray = Encoding.ASCII.GetBytes(textBox1.Text);
}

           byte[] bArray = Encoding.ASCII.GetBytes(textBox1.Text);
            for (int i=0; i < bArray.Length; i++)
                Console.WriteLine(" {0}", bArray[i]);