1 // Licensed to the .NET Foundation under one or more agreements. 2 // The .NET Foundation licenses this file to you under the MIT license. 3 // See the LICENSE file in the project root for more information. 4 5 namespace System.Net.Mail 6 { 7 // Enumeration of the well-known headers. 8 // If you add to this enum you MUST also add the appropriate initializer in MailHeaderInfo.s_headerInfo 9 internal enum MailHeaderID 10 { 11 Bcc = 0, 12 Cc, 13 Comments, 14 ContentDescription, 15 ContentDisposition, 16 ContentID, 17 ContentLocation, 18 ContentTransferEncoding, 19 ContentType, 20 Date, 21 From, 22 Importance, 23 InReplyTo, 24 Keywords, 25 Max, 26 MessageID, 27 MimeVersion, 28 Priority, 29 References, 30 ReplyTo, 31 ResentBcc, 32 ResentCc, 33 ResentDate, 34 ResentFrom, 35 ResentMessageID, 36 ResentSender, 37 ResentTo, 38 Sender, 39 Subject, 40 To, 41 XPriority, 42 XReceiver, 43 XSender, 44 ZMaxEnumValue = XSender, // Keep this to equal to the last "known" enum entry if you add to the end 45 Unknown = -1 46 } 47 } 48