ComponentPro UltimateBounceInspector

      FolderExistsCompleted Event

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      Occurs when an asynchronous FolderExistsAsync operation completes.

      Syntax

      public event ExtendedAsyncCompletedEventHandler<TResult> FolderExistsCompleted

      Examples

      Connect to an IMAP server and asynchronously check if a mailbox exists (Task-based asynchronous approach).

      using System;
      using ComponentPro.Net.Mail;
      
      ...
      
      // Create a new instance of the Imap class.
      Imap client = new Imap();
      
      // Connect to the server.
      client.Connect("myserver");
      
      // Or you can specify the IMAP port with 
      // client.Connect("myserver", 143); 
       
      // Login to the server.
      client.Authenticate("user", "password");
      
      // ... 
       
      // Select the 'INBOX' folder.
      client.Select("INBOX");
      
      // Check to see whether 'my folder' mailbox exists in the current working mailbox. 
      bool exists = await client.FolderExistsAsync("my folder");
      
      // ... 
       
      if (exists)
          Console.WriteLine("Folder exists");
      else 
          Console.WriteLine("Folder does not exists");
      
      // Disconnect.
      client.Disconnect();

      Connect to an IMAP server and asynchronously check if a mailbox exists (Event-based asynchronous approach).

      using System;
      using ComponentPro;
      using ComponentPro.Net.Mail;
      
      ...
      
      public void DoFolderExistsAsync()
      {
          // Create a new instance of the Imap class. 
          Imap client = new Imap();
      
          // Connect to the server. 
          client.Connect("myserver");
      
          // Or you can specify the IMAP port with 
          // client.Connect("myserver", 143); 
       
          // Login to the server. 
          client.Authenticate("user", "password");
      
          // ... 
       
          // Register an event handler. 
          client.FolderExistsCompleted += client_FolderExistsCompleted;
      
          // Select the 'INBOX' folder. 
          client.Select("INBOX");
      
          // Check to see whether 'my folder' mailbox exists in the current working mailbox. 
          client.FolderExistsAsync("my folder");
      
          // ... 
       
          // Disconnect. 
          client.Disconnect();
      }
      
      void client_FolderExistsCompleted(object sender, ExtendedAsyncCompletedEventArgs<bool> e)
      {
          // Imap client = (Imap)sender; 
          if (e.Error != null)
          {
              Console.WriteLine("Error: " + e.Error.ToString());
          }
          else 
          {
              if (e.Result)
                  Console.WriteLine("Folder exists");
              else 
                  Console.WriteLine("Folder does not exists");
          }
          
      }

      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