如何在VB.net中使用IMAP命令来获取Gmail.com服务器的响应? [英] How can I use IMAP commands in VB.net to get response from Gmail.com server?
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问题描述
我正在使用Visual Basic 2010专业版,而我正在使用的软件,其中一部分是获取[收件箱]电子邮件,但我甚至不能从服务器得到响应。
I'm using Visual Basic 2010 professional edition and I'm working on a software that part of it is to get the [Inbox] E-mails, but I can not even get a response from the server.
我做了这些步骤:
- 确保我的Gmail.com帐户正在使用IMAP
- 我使用两步验证方法,所以我使用我的应用程序密码。
-
我使用这段代码:
- Made sure that my Gmail.com account is working with IMAP
- I'm using 2-step verification method, so I'm using my application password.
I'm using this code :
Imports System.Net.Sockets
Imports System.IO
Imports System.Text
Imports System.Net.Security
Public Class ImapClient1
Dim ServerNm As String
Dim UsrNm As String
Dim PassStr As String
Dim _IntPort As Integer
Dim ImapClient As New Net.Sockets.TcpClient
Dim NetworkS_stream As NetworkStream
Dim m_sslStream As SslStream
Dim Read_Stream As StreamReader
Dim StatResp As String
Function Login(ByVal Sstream As SslStream, ByVal Server_Command As String)
ImapClient = New TcpClient(ServerNm, _IntPort)
NetworkS_stream = ImapClient.GetStream 'Read the stream
Sstream = New SslStream(NetworkS_stream)
Dim Read_Stream2 = New StreamReader(Sstream)
Server_Command = Server_Command ' + vbCrLf
m_buffer = System.Text.Encoding.ASCII.GetBytes(Server_Command.ToCharArray())
Sstream.Write(m_buffer, 0, m_buffer.Length)
Dim Server_Reponse As String
Server_Reponse = Read_Stream2.ReadLine()
Return Server_Reponse
End Function
当我使用[按钮]使用此登录功能时,如下所示:
When i use this Login function with a [button] like :
ListBox1.Items.Clear()
StatResp = Login(m_sslStream, "LOGIN " + UsrNm + " " + PassStr + " ") & vbCrLf
ListBox1.Items.Add(StatResp)
我没有在[ListBox]控制。
I get nothing in the [ListBox] control.
推荐答案
每个IMAP命令需要在前面加上一个Tag,这是一个随机的字母数字字符串需要生成。通常,登录过程如下所示:
Every IMAP command needs to have a "Tag" prefixed in front of it, which is a random alphanumeric string you need to generate. Typically a login process looks like this:
A001 LOGIN user password
A002 SELECT INBOX
A003 ...
...
A010 LOGOUT
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