ComponentPro UltimateMail

      AuthenticateAsync(Pop3AuthenticationMethod, Object) Method

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      Asynchronously authenticates the user to the remote POP3 server using the specified authentication method that does not require credentials. Only NTLM and External methods are supported.

      Syntax

      public Task AuthenticateAsync(
         Pop3AuthenticationMethod authenticationMethod, 
         object userState = null
      )

      Parameters

      authenticationMethod
      The POP3 authentication method.
      userState
      A user-provided object that identifies this particular asynchronous operation.

      Return Value

      An object that references the 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)

      See Also