(C#) Get the text body content of a MIME part.

Explains and demonstrates the GetBodyEncoded and GetBodyDecoded methods. This example uses the MIME test data located at http://www.chilkatsoft.com/testData/sampleMime1.txt

The sampleMime1.txt contains:

Content-Type: multipart/mixed;
 boundary="------------070404010201060604000708"

This is a multi-part message in MIME format.

--------------070404010201060604000708
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain; charset="utf-8"

Falsches =C3=9Cben von Xylophonmusik qu=C3=A4lt jeden gr=C3=B6=C3=9Feren Zwe=
rg.
--------------070404010201060604000708
Content-Transfer-Encoding: base64
Content-Type: text/plain; charset="utf-8"

RmFsc2NoZXMgw5xiZW4gdm9uIFh5bG9waG9ubXVzaWsgcXXDpGx0IGplZGVuIGdyw7bDn2VyZW4g
Wndlcmcu

--------------070404010201060604000708
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset="iso-8859-1"

Falsches Üben von Xylophonmusik quält jeden größeren Zwerg.
--------------070404010201060604000708--

Download: Chilkat .NET Assemblies

Chilkat.Mime mime = new Chilkat.Mime();

bool success;
success = mime.UnlockComponent("Anything for 30-day trial.");
if (success == false) {
    textBox1.Text += mime.LastErrorText + "\r\n";
    return;
}

//  Load the sampleMime1.txt file into the MIME object.
//  (This file is available at http://www.chilkatsoft.com/testData/sampleMime1.txt )

success = mime.LoadMimeFile("sampleMime1.txt");
if (success == false) {
    textBox1.Text += mime.LastErrorText + "\r\n";
    return;
}

//  The sampleMime1.txt is a MIME document with a top-level
//  multipart/mixed containing 3 sub-parts, each of which has the
//  same body text but with different content-transfer-encodings and
//  using different character encodings (utf-8 and iso-8859-1).

//  Calling mime.GetBodyEncoded or mime.GetBodyDecoded on the
//  top-level multipart/mixed MIME object will return an empty string.
//  It is because the "body" of a multipart MIME object is always empty.
//  A multipart MIME object contains sub-parts (each a MIME object),
//  and it is only the leaf-objects that can have non-empty bodies.

//  Get GetBodyDecoded method returns the body text decoded
//  from whatever the content-transfer-encoding may be, and
//  converted from whatever charset encoding might be used.
//  In this case, calling GetBodyDecoded on each of the three
//  sub-parts will return the same string.
//  To demonstrate:
Chilkat.Mime part1 = null;
part1 = mime.GetPart(0);
textBox1.Text += part1.GetBodyDecoded() + "\r\n";

Chilkat.Mime part2 = null;
part2 = mime.GetPart(1);
textBox1.Text += part2.GetBodyDecoded() + "\r\n";

Chilkat.Mime part3 = null;
part3 = mime.GetPart(2);
textBox1.Text += part3.GetBodyDecoded() + "\r\n";

//  The GetBodyEncoded method will NOT decode from
//  whatever content-transfer-encoding is used.  However, it will
//  convert from whatever internal character encoding
//  may be used to return a string appropriate for the calling
//  programming language (for example, in .NET or any language
//  using ActiveX, all strings are Unicode..)
textBox1.Text += part1.GetBodyEncoded() + "\r\n";
textBox1.Text += part2.GetBodyEncoded() + "\r\n";
textBox1.Text += part3.GetBodyEncoded() + "\r\n";