Message.Payload對於所有消息始終爲空。我如何獲得這些數據？

Question

它正在返回正確數量的消息，但唯一填充的字段是Id和ThreadId。其他所有內容爲空

 var service = new GmailService(new BaseClientService.Initializer() 
     { 
      HttpClientInitializer = credential, 
      ApplicationName = ApplicationName, 
     }); 

     ListMessagesResponse response = service.Users.Messages.List(emailAddress).Execute(); 

     IList<Google.Apis.Gmail.v1.Data.Message> messages = response.Messages; 

     Console.WriteLine("Messages:"); 
     if (messages != null && messages.Count > 0) 
     { 
      foreach (var message in messages) 
      { 
       Console.WriteLine("{0}", message.Payload.Body); 
       Console.WriteLine(); 
      } 
     } 
     else 
     { 
      Console.WriteLine("No Messages found."); 
     } 

Answer 1

Messages.List（）只返回消息和線程ID。要獲取消息內容，需要調用Get()每個你有興趣在你的foreach循環示例的更新版本消息：

foreach (var message in messages) 
{ 
    Message m = service.Users.Messages.Get("me", message.Id).Execute(); 
    // m.Payload is populated now. 
    foreach (var part in message.Payload.Parts) 
    { 
     byte[] data = Convert.FromBase64String(part.Body.Data); 
     string decodedString = Encoding.UTF8.GetString(data); 
     Console.WriteLine(decodedString); 
    } 
}