ComponentPro UltimateMail

      AuthenticateAsync(String, String, Pop3AuthenticationMethod, AsyncCompletedEventHandler, Object) Method

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      Asynchronously authenticates the specified user to the remote POP3 server with the specified credentials using the specified authentication method.

      Syntax

      public Task AuthenticateAsync(
         string userName, 
         string password, 
         Pop3AuthenticationMethod authenticationMethod, 
         AsyncCompletedEventHandler callback, 
         object userState = null
      )

      Parameters

      userName
      The user name.
      password
      The password.
      authenticationMethod
      The authentication method.
      callback
      An optional asynchronous callback to be invoked when this operation completes. This parameter can be null.
      userState
      A user-provided object that identifies this particular asynchronous operation.

      Examples

      Asynchronously connect to a POP3 server and list recent messages.

      using System;
      using System.Text;
      using ComponentPro.Net.Mail;
      using ComponentPro;
      
      ...
      
      // Create a new instance.
      Pop3 client = new Pop3();
      
      // Connect to the POP3 server asynchronously. 
      await client.ConnectAsync("myserver");
      
      // Or you can specify the POP3 port with 
      // client.ConnectAsync("myserver", 110); 
       
      // Authenticate the user asynchronously. 
      await client.AuthenticateAsync("userName", "password");
      
      // Do something here...
      StringBuilder sb = new StringBuilder();
      
      Pop3MessageCollection list = client.ListMessages(Pop3EnvelopeParts.Size | Pop3EnvelopeParts.UniqueId);
      for (int i = 0; i < list.Count; i++)
      {
          sb.AppendFormat("{0} - {1}\r\n", i + 1, list[i].UniqueId);
      }
      
      Console.WriteLine(sb.ToString());
      
      // ... 
       
      // Disconnect asynchronously. 
      await client.DisconnectAsync();
      
      // ...

      Asynchronously connect to a POP3 server and list recent messages.

      using System;
      using System.ComponentModel;
      using System.Text;
      using ComponentPro;
      using ComponentPro.Net.Mail;
      
      ...
      
      public void DoAsyncConnect()
      {
          // Create a new instance. 
          Pop3 client = new Pop3();
      
          client.ConnectCompleted += client_ConnectCompleted;
          client.AuthenticateCompleted += client_AuthenticateCompleted;
          client.DisconnectCompleted += client_DisconnectCompleted;
      
          // Connect to the POP3 server asynchronously. 
          client.ConnectAsync("myserver");
      
          // Or you can specify the POP3 port with 
          // client.ConnectAsync("myserver", 110); 
       
          // Your code here 
          // ...
      }
      
      void client_ConnectCompleted(object sender, ExtendedAsyncCompletedEventArgs<string> e)
      {
          Pop3 client = (Pop3)sender;
          if (e.Error != null)
          {
              Console.WriteLine("Error: " + e.Error.ToString());
              return;
          }
      
          // Authenticate the user asynchronously. 
          client.AuthenticateAsync("userName", "password");
      }
      
      void client_AuthenticateCompleted(object sender, AsyncCompletedEventArgs e)
      {
          Pop3 client = (Pop3)sender;
          if (e.Error != null)
          {
              Console.WriteLine("Error: " + e.Error.ToString());
              return;
          }
      
          // Do something here... 
          StringBuilder sb = new StringBuilder();
      
          Pop3MessageCollection list = client.ListMessages(Pop3EnvelopeParts.Size | Pop3EnvelopeParts.UniqueId);
          for (int i = 0; i < list.Count; i++)
          {
              sb.AppendFormat("{0} - {1}\r\n", i + 1, list[i].UniqueId);
          }
      
          Console.WriteLine(sb.ToString());
      
          // ... 
       
          // Disconnect asynchronously. 
          client.DisconnectAsync();
      }
      
      void client_DisconnectCompleted(object sender, ExtendedAsyncCompletedEventArgs<string> e)
      {
          if (e.Error != null)
              Console.WriteLine("Error: " + e.Error.ToString());
      }

      Framework

      .NET Compact Framework.NET Compact Framework

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

      Xamarin AndroidXamarin Android

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

      Xamarin MacXamarin Mac

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

      Xamarin iOSXamarin iOS

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

      See Also