如何使用 C#/WinForms 从 Gmail 下载电子邮件？

Question

我有一个项目 (Visual C# 2010 Express) 需要我在后台下载我的 Gmail 收件箱，然后解析它们并将我需要的收件箱放入 ListBox 或其他东西中。我无法安装 Google API，因为它说我需要 .NET 2.0，但我不知道如何使用 NuGet。没有 Google API 有没有办法做到这一点，如果没有，我该如何安装它？

Answer 1

不，您不需要 Google API 从 Gmail 帐户获取（下载）电子邮件。您可以阅读更多关于 Reading Gmail Inbox Message

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Net.NetworkInformation;
using System.Net.Security;
using System.Net.Sockets;

namespace mail
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {

            Imap client = new Imap();
            // connect to server

            client.Connect("imap.gmail.com", 993, SslMode.Implicit);

            // authenticate
            client.Login("username", "password");

            // select folder
            client.SelectFolder("Inbox");

            int NoOfEmailsPerPage = 10;
            int totalEmails = client.CurrentFolder.TotalMessageCount;
            // get message list - envelope headers
            ImapMessageCollection messages = client.GetMessageList(ImapListFields.Envelope);

            // display info about each message


            foreach (ImapMessageInfo message in messages)
            {

                TableCell noCell = new TableCell();

                noCell.CssClass = "emails-table-cell";

                noCell.Text = Convert.ToString(message.To);
                TableCell fromCell = new TableCell();
                fromCell.CssClass = "emails-table-cell";
                fromCell.Text = Convert.ToString(message.From);
                TableCell subjectCell = new TableCell();
                subjectCell.CssClass = "emails-table-cell";
                subjectCell.Style["width"] = "300px";
                subjectCell.Text = Convert.ToString(message.Subject);
                TableCell dateCell = new TableCell();
                dateCell.CssClass = "emails-table-cell";
                if (message.Date.OriginalTime != DateTime.MinValue)
                    dateCell.Text = message.Date.OriginalTime.ToString();
                TableRow emailRow = new TableRow();
                emailRow.Cells.Add(noCell);
                emailRow.Cells.Add(fromCell);
                emailRow.Cells.Add(subjectCell);
                emailRow.Cells.Add(dateCell);
                EmailsTable.Rows.AddAt(2 + 0, emailRow);

            }
            int totalPages;
            int mod = totalEmails % NoOfEmailsPerPage;
            if (mod == 0)
                totalPages = totalEmails / NoOfEmailsPerPage;
            else
                totalPages = ((totalEmails - mod) / NoOfEmailsPerPage) + 1;



        }
    }
}

如何使用 C#/WinForms 从 Gmail 下载电子邮件？

How can I download emails from Gmail using C#/WinForms?

c#

gmail

winforms