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ASP.NET Server and Windows Form Client

 

Add ASP.NET Empty Web Application

Project Nuget install Microsoft ASP.NET SignalR 1.2.2(The lastest version in Visual Studio 2010 with .net framework 4.0)

PM> Install-Package Microsoft.AspNet.SignalR -Version 1.2.2

 

Add Default.aspx

Add Global Application Class called Global.asax

 public class Global : System.Web.HttpApplication
 {

  protected void Application_Start(object sender, EventArgs e)
  {
   RouteTable.Routes.MapConnection<EchoConnection>("EchoConnection", "/realtime/echo");
  }

Add a cs file called EchoConnection.cs

using System.Data;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.AspNet.SignalR;
using Microsoft.AspNet.SignalR.Hubs;
using Microsoft.AspNet.SignalR.Infrastructure;
using System.Web;
using System.Collections.Generic;
using System.Net.NetworkInformation;
using System;
using System.Diagnostics;

namespace WebAppSingalRServer
{
 public class EchoConnection : PersistentConnection
 {
  private static int _connections = 0;

  protected override Task OnConnected(IRequest request, string connectionId)
  {   
   Interlocked.Increment(ref _connections);
   string sendMsg = "Setting," + connectionId;
   return Connection.Send(connectionId, sendMsg);
  }

  protected override Task OnDisconnected(IRequest request, string connectionId)
  {
   Interlocked.Decrement(ref _connections);
   return null;
  }

  protected override Task OnReceived(IRequest request, string connectionId, string data)
  {
   string[] strArray = data.Split(',');

   string szCommand = strArray[0];

   if (szCommand == "abc")
   {
    try
    {
     //return Connection.Broadcast("def");
     return Connection.Send(connectionId, "def");
    }
    catch (Exception ex)
    {
     Debug.WriteLine("Exception  = " + ex.ToString());
     return null;
    }
   }

   return null;

  }

 }

}

 

Create a windows form for client

Add a windows form called SignalClient and add a button on it

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using Microsoft.AspNet.SignalR;
//using Microsoft.AspNet.SignalR.Client.Hubs;
using System.Diagnostics;
using Microsoft.AspNet.SignalR.Client;

namespace WinFormSignalR
{
 public partial class SignalClient : Form
 {
  public Connection PersistentConnection;

  public SignalClient()
  {
   InitializeComponent();

   PersistentConnection= new Connection("http://localhost:6684/realtime/echo");

   PersistentConnection.Received += ReceivedMessage;
   PersistentConnection.Start().Wait();
   
  }

  private void ReceivedMessage(string str)
  {
   Debug.WriteLine("str = " + str);
  }

  private void button1_Click(object sender, EventArgs e)
  {
   PersistentConnection.Send("abc").Wait();
  }

 }
}