Mobile

public class Reader extends Activity {
    private String ID;
    public void setID(String id) {
	ID = id;
    }
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_reader);
    }
 
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
	getMenuInflater().inflate(R.menu.activity_reader, menu);
	return true;
    }
}

public class MainActivity extends Reader {
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setID("bla_bla_bla");
    }
}

Eclipse Quote:

The method setID(String) is undefined for the type MainActivity

 
                      {
                       @Override
                       public void onStatusChanged(String provider, int status, Bundle extras)
                        {
                       }
                       @Override
                       public void onProviderEnabled(String provider)
                        {
                         }
                       @Override
                       public void onProviderDisabled(String provider)
                       {
                        }
                        @Override
                       public void onLocationChanged(Location location) {
                       Double latitude = location.getLatitude();
                       Double longitude = location.getLongitude();
                       Toast.makeText(getBaseContext(),"Voici les coordonnées de votre téléphone : " + latitude + " " + longitude,Toast.LENGTH_LONG).show();
                       try {
 
                            Socket s = new Socket( "192.168.1.21" , 80);
 
                                                 // BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream()));

                            BufferedWriter out = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
 
                                                  //send output msg

                            String outMsg = latitude.toString(); 
 
                            out.write(outMsg);
 
                            out.flush();
 
                            Log.i("TcpClient", "sent: " + outMsg);
 
                                                  //accept server response

                                                  //String inMsg = in.readLine() + System.getProperty("line.separator");

                                                  //Log.i("TcpClient", "received: " + inMsg);

                                                  //close connection

                               s.close();
 
                               } catch (UnknownHostException e) {
 
                                e.printStackTrace();
 
                                } catch (IOException e) {
 

                                e.printStackTrace();
 
                                 } 
 
                                 }
                                     };
              @Override
               public IBinder onBind(Intent arg0)
                  {
                   return null;
                   }
               @Override
               public void onCreate()
               {
 
                 locationMgr = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
                 locationMgr.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 10000,0, onLocationChange);
                 locationMgr.requestLocationUpdates(LocationManager.GPS_PROVIDER, 10000, 0,onLocationChange);
                 super.onCreate();
                }
                 @Override
                  public int onStartCommand(Intent intent, int flags, int startId)
                 {
 
                    return super.onStartCommand(intent, flags, startId);
                       }
 
                @Override
                   public void onDestroy()
                  {
                    super.onDestroy();
                     locationMgr.removeUpdates(onLocationChange);
                                            }
                                    }

 
public partial class WebForm1 : System.Web.UI.Page
{
    private TcpListener tcpListener;
    private Thread listenThread;
 
    protected void Page_Load(object sender, EventArgs e)
    {
        this.tcpListener = new TcpListener(IPAddress.Any, 3000);
        this.listenThread = new Thread(new ThreadStart(ListenForClients));
        this.listenThread.Start();
    }
    private void ListenForClients()
    {
        this.tcpListener.Start();
 
        while (true)
        {
            //blocks until a client has connected to the server
            TcpClient client = this.tcpListener.AcceptTcpClient();
 
            //create a thread to handle communication 
            //with connected client
            Thread clientThread = new Thread(new ParameterizedThreadStart(HandleClientComm));
            clientThread.Start(client);
        }
    }
    private void HandleClientComm(object client)
    {
        TcpClient tcpClient = (TcpClient)client;
        NetworkStream clientStream = tcpClient.GetStream();
 
        byte[] message = new byte[4096];
        int bytesRead;
 
        while (true)
        {
            bytesRead = 0;
 
            try
            {
                //blocks until a client sends a message
                bytesRead = clientStream.Read(message, 0, 4096);
            }
            catch
            {
                //a socket error has occured
                break;
            }
 
            if (bytesRead == 0)
            {
                //the client has disconnected from the server
                break;
            }
 
            //message has successfully been received
            ASCIIEncoding encoder = new ASCIIEncoding();
            System.Diagnostics.Debug.WriteLine(encoder.GetString(message, 0, bytesRead));
            ConnectionStringSettings connection = ConfigurationManager.ConnectionStrings["Connection"];
            SqlConnection maConnexion = new SqlConnection(connection.ConnectionString);
            maConnexion.Open();
 

            SqlCommand command = new SqlCommand("INSERT INTO Table1 (longitude,latitude,altitude,vitesse) VALUES ('" + message + " '0','0',' 0" + "')", maConnexion);
            command.ExecuteNonQuery();
        }
 
        tcpClient.Close();
    }
 
}
 
}

Hi World!
When i wanna to open layout (Main.axml) in disigner in VS2010 for android I get this error : Xamarin.AndroidDesigner.DesignerException 
But it works correctly in XML Design.
I wanna to have design !

Unhandled Exception CODEPAGE=”1256″ not supported

IDbConnection

 void button_Click(object sender, EventArgs e)
        {
           
                TextView txts = FindViewById<TextView>(Resource.Id.txt);
                txts.Text = "Salam Ali Joon !";
                string namess = "";
                string connectionString = "Server=217.66.216.77,1633;" +
                     
                    "Database=testinDB;" + "User ID=testing;" + "Password=arew;";
                try
                {    
            IDbConnection dbcon;
                using (dbcon = new SqlConnection(connectionString))
                {
                    dbcon.Open();  
                    using (IDbCommand dbcmd = dbcon.CreateCommand())
                    {
                        string sql = " SELECT * " +
                                     " FROM persons.[user] ";
                        dbcmd.CommandText = sql;
                        using (IDataReader reader = dbcmd.ExecuteReader())
                        {
                            while (reader.Read())
                            {
                                string FirstName = (string)reader["UserName"];
                                namess = "user name is : " + FirstName;
                                //string LastName = (string)reader["LastName"];
                                //namess += "Name: " +FirstName + " " + LastName;
                            }
                            reader.Close();
                            dbcon.Close();
                        }
                    }
                }
                txts.Text = namess;
            }
            catch (Exception ex)
            {
                txts.Text = ex.Message;
            }
        }