Using ActiveComport Serial Port Toolkit with ASP .NET (C#)

   using ACOMPORTLib;

   public ComPort m_objComport;

   m_objComport = new ComPort();

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using ACOMPORTLib;

namespace WebApplication
{
	/// <summary>
	/// Summary description for WebForm1.
	/// </summary>
	public class WebForm1 : System.Web.UI.Page
	{
		public ComPort m_objComport;
		protected System.Web.UI.HtmlControls.HtmlInputText textCommand;
		protected System.Web.UI.HtmlControls.HtmlTextArea textResponse;
		protected System.Web.UI.HtmlControls.HtmlTextArea textResult;
		protected System.Web.UI.HtmlControls.HtmlSelect comboDevice;
		protected System.Web.UI.HtmlControls.HtmlForm Form1;
		protected System.Web.UI.WebControls.Button Button1;
		
		private void Page_Load(object sender, System.EventArgs e)
		{
			int i;

			m_objComport = new ComPort();

			comboDevice.Items.Clear ();

			for( i = 0; i < m_objComport.GetDeviceCount (); i++ )
			{
				comboDevice.Items.Add( m_objComport.GetDevice ( i ) );
			}
			
			for( i = 1; i < 9; i++ )
			{
				comboDevice.Items.Add( "COM" + i.ToString () );
			}
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button1_Click(object sender, System.EventArgs e)
		{
			m_objComport.Device = comboDevice.Value.ToString ();
			m_objComport.BaudRate = 9600;
			m_objComport.ComTimeout = 500;

			m_objComport.LogFile = "C:\\ComLog.txt";

			m_objComport.Open ();
 			m_objComport.HardwareFlowControl = -1;

			textResult.Value = "ERROR " + m_objComport.LastError + " : " + m_objComport.GetErrorDescription ( m_objComport.LastError );

			if  ( m_objComport.IsOpened == -1 )
			{
				m_objComport.WriteString ( textCommand.Value );

				textResponse.Value = "";

				while ( m_objComport.LastError == 0 )
				{
					textResponse.Value += m_objComport.ReadString () + "\n";
				}

				m_objComport.Close ();
			}
		}
	}
}