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MimeKit

BodyPart Class

An abstract body part of a message.
Inheritance Hierarchy

Namespace: MailKit
Assembly: MailKit (in MailKit.dll) Version: 4.3.0
Syntax
C#
public abstract class BodyPart

The BodyPart type exposes the following members.

Constructors
 NameDescription
Protected methodBodyPart Initializes a new instance of the BodyPart class.
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Properties
 NameDescription
Public propertyContentType Gets the Content-Type of the body part.
Public propertyCode examplePartSpecifier Gets the part specifier.
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Methods
 NameDescription
Public methodAccept Dispatches to the specific visit method for this MIME body part.
Protected methodEncode Encodes the BodyPart into the StringBuilder.
Public methodEquals
(Inherited from Object)
Protected methodFinalize
(Inherited from Object)
Public methodGetHashCode
(Inherited from Object)
Public methodGetType
(Inherited from Object)
Protected methodMemberwiseClone
(Inherited from Object)
Public methodToString Returns a String that represents the current BodyPart.
(Overrides ObjectToString)
Public methodStatic memberTryParse Tries to parse the given text into a new BodyPart instance.
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Remarks
Each body part will actually be a BodyPartBasic, BodyPartText, BodyPartMessage, or BodyPartMultipart.
Example
C#
public static void DownloadBodyAndAttachments (string baseDirectory)
{
    using (var client = new ImapClient ()) {
        client.Connect ("imap.gmail.com", 993, SecureSocketOptions.SslOnConnect);

        client.Authenticate ("username", "password");

        client.Inbox.Open (FolderAccess.ReadOnly);

        // search for messages where the Subject header contains either "MimeKit" or "MailKit"
        var query = SearchQuery.SubjectContains ("MimeKit").Or (SearchQuery.SubjectContains ("MailKit"));
        var uids = client.Inbox.Search (query);

        // fetch summary information for the search results (we will want the UID and the BODYSTRUCTURE
        // of each message so that we can extract the text body and the attachments)
        var items = client.Inbox.Fetch (uids, MessageSummaryItems.UniqueId | MessageSummaryItems.BodyStructure);

        foreach (var item in items) {
            // determine a directory to save stuff in
            var directory = Path.Combine (baseDirectory, item.UniqueId.ToString ());

            // create the directory
            Directory.CreateDirectory (directory);

            // IMessageSummary.TextBody is a convenience property that finds the 'text/plain' body part for us
            var bodyPart = item.TextBody;

            if (bodyPart != null) {
                // download the 'text/plain' body part
                var plain = (TextPart) client.Inbox.GetBodyPart (item.UniqueId, bodyPart);

                // TextPart.Text is a convenience property that decodes the content and converts the result to
                // a string for us
                var text = plain.Text;

                File.WriteAllText (Path.Combine (directory, "body.txt"), text);
            }

            // IMessageSummary.HtmlBody is a convenience property that finds the 'text/html' body part for us
            bodyPart = item.TextBody;

            if (bodyPart != null) {
                // download the 'text/html' body part
                var html = (TextPart) client.Inbox.GetBodyPart (item.UniqueId, bodyPart);

                // TextPart.Text is a convenience property that decodes the content and converts the result to
                // a string for us
                var text = html.Text;

                File.WriteAllText (Path.Combine (directory, "body.html"), text);
            }

            // now iterate over all of the attachments and save them to disk
            foreach (var attachment in item.Attachments) {
                // download the attachment just like we did with the body
                var entity = client.Inbox.GetBodyPart (item.UniqueId, attachment);

                // attachments can be either message/rfc822 parts or regular MIME parts
                if (entity is MessagePart) {
                    var rfc822 = (MessagePart) entity;

                    var path = Path.Combine (directory, attachment.PartSpecifier + ".eml");

                    rfc822.Message.WriteTo (path);
                } else {
                    var part = (MimePart) entity;

                    // default to using the sending client's suggested fileName value
                    var fileName = attachment.FileName;

                    if (string.IsNullOrEmpty (fileName)) {
                        // the FileName wasn't defined, so generate one...
                        if (!MimeTypes.TryGetExtension (attachment.ContentType.MimeType, out string extension))
                            extension = ".dat";

                        fileName = Guid.NewGuid ().ToString () + extension;
                    }

                    var path = Path.Combine (directory, fileName);

                    // decode and save the content to a file
                    using (var stream = File.Create (path))
                        part.Content.DecodeTo (stream);
                }
            }
        }

        client.Disconnect (true);
    }
}
See Also