Internet connection with Windows Mobile 5.0

{codecitation class="brush: c#; gutter: true;" width="600px"}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.WindowsMobile.Status;
using System.Net;
using System.IO;
using System.Diagnostics;

namespace InterNet
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

bool _remoteServerReachable = false;
bool _internetReachable = false;
bool _networkConnected = false;

private void Form1_Load(object sender, EventArgs e)
{
_networkWatcher = new SystemState(SystemProperty.ConnectionsCount, false);
_networkWatcher.Changed += new ChangeEventHandler(NetworkWatcher_Changed);

DetermineNetworkState(SystemState.ConnectionsCount);
DisplayConnectionInfo();
}


private void Form1_Closing(object sender, CancelEventArgs e)
{
// When creating an instance of the SystemState class that runs on a background thread,
// you must call the Dispose method to cause the background thread to exit.
if (_networkWatcher != null)
_networkWatcher.Dispose();
}

SystemState _networkWatcher = null;

void NetworkWatcher_Changed(object sender, ChangeEventArgs args)
{
int connectionsCount = (int)args.NewValue;
DetermineNetworkState(connectionsCount);

DisplayConnectionInfo();
}

static Uri _remoteServerUrl = new Uri(@"http://somebogusurlthatwontexist.com/SQLSync/sqlcesa30.dll");
// static Uri _remoteServerUrl = new Uri(@"http://192.168.1.102/SQLSync/sqlcesa30.dll");
const string _remoteServerExpectedText = @"SQL Server";
static Uri _internetReachableUrl = new Uri(@"http://mobile.live.com/search");
const string _internetReachableExpectedText = @"Live Search";
void DetermineNetworkState(int connectionsCount)
{
if (connectionsCount > 0)
{
_networkConnected = true;
_remoteServerReachable = IsUrlReachable(_remoteServerUrl, _remoteServerExpectedText);
_internetReachable = _remoteServerReachable ? true :
IsUrlReachable(_internetReachableUrl, _internetReachableExpectedText);
}
else
{
_networkConnected = false;
_internetReachable = false;
_remoteServerReachable = false;
}
}

void DisplayConnectionInfo()
{
if (InvokeRequired)
{
Invoke((MethodInvoker)DisplayConnectionInfo);
}
else
{
txtNetworkConnected.Text = _networkConnected.ToString();
txtRemoteServerReachable.Text = _remoteServerReachable.ToString();
txtInternetReachable.Text = _internetReachable.ToString();
}
}

#if PocketPC || Smartphone
// Required for the above Invoke call
// This delegate is already defined in the full .NET Framework
delegate void MethodInvoker();
#endif

const int _maxConnectTryCount = 2;
const int _sleepTimeBetweenConnectTries = 100; // milliseconds
bool IsUrlReachable(Uri url, string expectedText)
{
bool isUrlReachable = false;
HttpWebRequest httpRequest = null;
HttpWebResponse httpResponse = null;
Stream responseStream = null;
StreamReader responseReader = null;

for (int connectTryCount = 0;
!isUrlReachable && connectTryCount = 0;
}
catch (SystemException ex)
{
// write log
#if DEBUG
Debug.WriteLine("");
Debug.WriteLine(string.Format("Try:{0} | Url:{1}",
connectTryCount.ToString(), url.ToString()));
Debug.WriteLine(ex.Message);
Debug.WriteLine("");
#endif
}
finally
{
if (responseReader != null)
responseReader.Close();
if (responseStream != null)
responseStream.Close();
if (httpResponse != null)
httpResponse.Close();
}
if (!isUrlReachable)
System.Threading.Thread.Sleep(_sleepTimeBetweenConnectTries);
}
return isUrlReachable;
}

}
}

{/codecitation}

from and video demo http://msdn2.microsoft.com/en-us/netframework/bb851561.aspx

and i would like to say thanks to Jim wilson.I hope you like this articles and Please send you all comment to info@codgain.com.

Thank you

RRaveen