ComponentPro UltimateFtp

      KeepAliveCompleted Event

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      Occurs when an asynchronous KeepAliveAsync operation completes.

      Syntax

      public event AsyncCompletedEventHandler KeepAliveCompleted

      Examples

      Shows how to use KeepAliveAsync method to keep the connection alive (Task-based approach).

      using System;
      using System.ComponentModel;
      using ComponentPro.IO;
      using ComponentPro.Net;
      using ComponentPro;
      
      ...
      
      async static void Main2()
      {
          // Create a new class instance. 
          Ftp client = new Ftp();
      
          // Connect to the FTP server. 
          client.Connect("myserver");
      
          // Authenticate. 
          client.Authenticate("userName", "password");
      
          // ... 
       
          // The event KeepAliveCompleted is fired when the operation completes. 
          client.KeepAliveCompleted += callback2;
      
          // Keep the connection alive. 
          await client.KeepAliveAsync("user state");
      
          // ... 
       
          // Disconnect. 
          client.Disconnect();
      }
      
      private static void callback2(object sender, AsyncCompletedEventArgs e)
      {
          if (e.Error != null)
              Console.WriteLine("Error: " + e.Error.ToString());
      
          Console.WriteLine("Method completed. User state: " + e.UserState);
      }

      Shows how to use the KeepAliveAsync method to keep the connection alive (Event-based approach).

      using System;
      using System.ComponentModel;
      using ComponentPro.IO;
      using ComponentPro.Net;
      using ComponentPro;
      
      ...
      
      static void Main()
      {
          // Create a new class instance. 
          Ftp client = new Ftp();
      
          // The KeepAliveCompleted event is fired when the operation completes. 
          client.KeepAliveCompleted += client_KeepAliveCompleted;
      
          // Connect to the FTP server. 
          client.Connect("myserver");
      
          // Authenticate. 
          client.Authenticate("userName", "password");
      
          // ... 
       
          // Send NOOP command to the server. 
          client.KeepAliveAsync();
      
          // ... 
       
          // Disconnect. 
          client.Disconnect();
      }
      
      static void client_KeepAliveCompleted(object sender, AsyncCompletedEventArgs e)
      {
          // Ftp client = (Ftp)sender; 
          if (e.Error != null)
              Console.WriteLine("Error: " + e.Error.Message);
      
          Console.WriteLine("Method completed. User-state: " + e.UserState);
      }

      Framework

      .NET Compact Framework.NET Compact Framework

      Supported version: 2.0, 3.5, and 3.9
      Assembly: ComponentPro.Ftp.CF (in ComponentPro.Ftp.CF.dll)

      .NET Framework.NET Framework

      Supported version: 2.0, 3.0, 3.5, 4.0, 4.5.x, 4.6.x and later
      Assembly: ComponentPro.Ftp (in ComponentPro.Ftp.dll)

      Portable Class Library for Windows Phone 8.1 and Windows 8.1 Store AppsPortable Class Library for Windows Phone 8.1 and Windows 8.1 Store Apps

      Supported version: 4.6.x and later
      Assembly: ComponentPro.Ftp.WinPcl (in ComponentPro.Ftp.WinPcl.dll)

      Universal Windows Platform (includes Windows 10 Mobile, Windows 10 Store Apps and Windows 10 IoT)Universal Windows Platform (includes Windows 10 Mobile, Windows 10 Store Apps and Windows 10 IoT)

      Supported version: 4.6.x and later
      Assembly: ComponentPro.Ftp.Uwp (in ComponentPro.Ftp.Uwp.dll)

      Xamarin AndroidXamarin Android

      Supported version: 2.3 and later
      Assembly: ComponentPro.Ftp.Android (in ComponentPro.Ftp.Android.dll)

      Xamarin MacXamarin Mac

      Supported version: 2.0.x and later
      Assembly: ComponentPro.Ftp.Mac (in ComponentPro.Ftp.Mac.dll)

      Xamarin iOSXamarin iOS

      Supported version: 5.1.x and later
      Assembly: ComponentPro.Ftp.iOS (in ComponentPro.Ftp.iOS.dll)

      See Also