C#

private void OnComm(object sender, EventArgs e)  //  MSCommLib OnComm Event Handler
		{
            int counter = new int();
			

			if (com.InBufferCount > 0) 
			{
				try
				{                   				

                    Stream s = new MemoryStream((byte[])com.Input);
                    counter = Convert.ToInt32(s.Length);                    

                    byte[] fileData = new byte[counter];                    

                    s.Read(fileData, 0, counter);
                    
                    s.Close();

					ReadDeviceResponse(fileData);                    
                    					
				}
				catch(Exception ex)
				{
					MessageBox.Show(ex.Message, this.Text,
						MessageBoxButtons.OK,MessageBoxIcon.Information);
				}
			}
		}

private void ReadDeviceResponse(byte[] response)
		{

            WritePacketDataOnTextFile(response);

			for(int i = 0; i < response.Length; i++)
			{
				rtfTerminal.AppendText(response[i].ToString() + " ");
			}
			rtfTerminal.AppendText("\n");            
			
		}

public static void WritePacketDataOnTextFile(byte[] Buffer)
        {
            int i;
            FileInfo file1 = new FileInfo("C:\\Users\\AJorge\\Desktop\\TestData.txt");
            StreamWriter sw = file1.AppendText();

            for (i = 0; i < Buffer.Length; i++)        

                sw.Write("{0} ", Buffer[i]);              

            sw.Close();           

        }