Csharp 通过按钮 C# 在 gmail 中打开 ICS 文件

我正在try 生成ICS文件，该文件将作为我的邮箱的附件.我想在邮箱中添加一个按钮，当点击该按钮时，会将我们带到Gmail(可能是询问Gmail用户名，我们需要在其中添加事件)，并将其添加到Gmail日历中.我找不到这样的东西.有谁能帮忙吗？

    StringBuilder sb = new StringBuilder();
    sb.AppendLine("BEGIN:VCALENDAR");
    sb.AppendLine("VERSION:2.0");
    sb.AppendLine("PRODID:Domain.com");
    sb.AppendLine("CALSCALE:GREGORIAN");
    sb.AppendLine("METHOD:REQUEST");
    sb.AppendLine("BEGIN:VEVENT");
    sb.AppendLine("UID:" + guid);
    sb.AppendLine(string.Format("ORGANIZER:MAILTO:{0}", retailStore.LocationEmail));
    sb.AppendLine(string.Format("ATTENDEE;CN='{0}, {1}';ROLE=REQ-PARTICIPANT;PARTSTAT=TENTATIVE:MAILTO:{2}", CustomerFirstName, CustomerLastName, CustomerEmail));
    sb.AppendLine("DTSTART:" + DateStart.ToUniversalTime().ToString(DateFormat));
    sb.AppendLine("DTSTAMP:" + now);
    sb.AppendLine("SUMMARY: " + Summary);
    sb.AppendLine("LOCATION: " + Location);
    sb.AppendLine("DESCRIPTION:" + Description);
    sb.AppendLine("PRIORITY:5");
    sb.AppendLine("TRANSP:OPAQUE");
    sb.AppendLine("END:VEVENT");
    sb.AppendLine("END:VCALENDAR");

    var calendarBytes = Encoding.UTF8.GetBytes(sb.ToString());
    System.IO.MemoryStream stream = new System.IO.MemoryStream(calendarBytes);
    Attachment attachment = new Attachment(stream, FileName, "text/calendar");
    customerMailMessage.Attachments.Add(attachment);