(C# UWP/WinRT) Convert MIME to XML

Demonstrates how to convert MIME to XML, and how to access the MIME parts and data from XML.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

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

// The contents of this MIME file are shown below, 
// and is also available at https://www.chilkatsoft.com/sampleMime.txt
bool success = mime.LoadMimeFile("qa_data/mime/sampleMime.txt");
if (success != true) {
    Debug.WriteLine(mime.LastErrorText);
    return;
}

// The MIME used in this example has the following nested structure
// 
// multipart/alternative
//     text/plain
//     multipart/related
//         text/html
//         image/jpeg
// 

// Convert to XML.
string xmlStr = mime.GetXml();

// Load into a Chilkat XML object so we can emit in indented format.
// (and also to demonstrate how to access the MIME content from XML).
Chilkat.Xml xml = new Chilkat.Xml();
xml.LoadXml(xmlStr);
// The XML emitted by this statement is shown below, following the remainder of sample code.
Debug.WriteLine(xml.GetXml());

// To get the top-level Subject header field:
Debug.WriteLine("Subject = " + xml.ChilkatPath("header|subject|*"));

// Another way of getting the Subject:
xml.FirstChild2();
Debug.WriteLine("Subject = " + xml.GetChildContent("subject"));
xml.GetRoot2();

// Using the Chilkat XML API, there are many different ways of accomplishing a goal.
// This example shows only a few possibilities...

// Let's go to the <body> tag containing the HTML.
// First we find the XML node where the content-type is text/html.
// (XML methods ending in "2" update the internal reference to the XML node.)
success = xml.SearchForContent2(xml,"content-type","text/html");
if (success == true) {
    // From this point, we know the HTML content is two levels up (to the <mime_message> node),
    // and one level down (to the <body> node).  We can get the HTML content from here:
    string htmlContent = xml.ChilkatPath("..|..|body|*");
    Debug.WriteLine(htmlContent);
    Debug.WriteLine("-");
}

// Back to the root...
xml.GetRoot2();

// How to iterate over all image/jpeg bodies and access the bytes of each?
success = xml.SearchForContent2(xml,"content-type","image/jpeg");
while (success == true) {
    // "$" in the Chilkat path indicates to update the internal reference of the caller
    // if the path could be traversed.
    string notUsed = xml.ChilkatPath("..|..|body|$");
    if (xml.LastMethodSuccess == true) {
        byte[] jpgBytes = null;
        jpgBytes = xml.GetBinaryContent(false,false,"");

        Debug.WriteLine("Found JPG image!");

        // Find the next JPG image.
        success = xml.SearchForContent2(xml,"content-type","image/jpeg");
    }
    else {
        success = false;
    }

}

// --------------------------------------------------------------
// --------------------------------------------------------------
// The MIME converted to XML:

// <?xml version="1.0" encoding="utf-8" ?>
// <mime_message>
//     <header>
//         <subject>Test email.</subject>
//         <content-type boundary="------------DB171738719FB06D67DEBAA0">multipart/alternative</content-type>
//         <mime-version>1.0</mime-version>
//     </header>
//     <body>
//         <subpart>
//             <mime_message>
//                 <header>
//                     <content-type charset="utf-8" format="flowed">text/plain</content-type>
//                     <content-transfer-encoding>7bit</content-transfer-encoding>
//                 </header>
//                 <body><![CDATA[This is a test.
// ]]></body>
//             </mime_message>
//         </subpart>
//         <subpart>
//             <mime_message>
//                 <header>
//                     <content-type boundary="------------A940F1230E6F0105F03DB2CB">multipart/related</content-type>
//                 </header>
//                 <body>
//                     <subpart>
//                         <mime_message>
//                             <header>
//                                 <content-type charset="utf-8">text/html</content-type>
//                                 <content-transfer-encoding>8bit</content-transfer-encoding>
//                             </header>
//                             <body><![CDATA[<html><head>
// <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
//   </head>
//   <body bgcolor="#FFFFFF" text="#000000">
//     <p>This is a test.&nbsp; <img src="cid:part1.E16AE3B4.1505C436@chilkatsoft.com" height="20" width="20"></p>
//   </body>
// </html>
// ]]></body>
//                         </mime_message>
//                     </subpart>
//                     <subpart>
//                         <mime_message>
//                             <header>
//                                 <content-type name="starfish20.jpg">image/jpeg</content-type>
//                                 <content-transfer-encoding>base64</content-transfer-encoding>
//                                 <content-id>&lt;part1.E16AE3B4.1505C436@chilkatsoft.com&gt;</content-id>
//                                 <content-disposition filename="starfish20.jpg">inline</content-disposition>
//                             </header>
//                             <body>/9j/4AAQSkZJRgABAQEASABIAAD//gAmRmlsZSB3cml0dGVuIGJ5IEFkb2JlIFBob3Rvc2hvcD8g
// NC4w/9sAQwAQCwwODAoQDg0OEhEQExgoGhgWFhgxIyUdKDozPTw5Mzg3QEhcTkBEV0U3OFBtUVdf
// YmdoZz5NcXlwZHhcZWdj/9sAQwEREhIYFRgvGhovY0I4QmNjY2NjY2NjY2NjY2NjY2NjY2NjY2Nj
// Y2NjY2NjY2NjY2NjY2NjY2NjY2NjY2NjY2Nj/8IAEQgAFAAUAwERAAIRAQMRAf/EABcAAAMBAAAA
// AAAAAAAAAAAAAAIDBAX/xAAYAQADAQEAAAAAAAAAAAAAAAABAgMEAP/aAAwDAQACEAMQAAAB2kZY
// NNEijWKddfTmLgALWH//xAAbEAACAgMBAAAAAAAAAAAAAAABAgMRAAQSE//aAAgBAQABBQL0XqN+
// pM2aqJGMiqFFCyg7z//EABwRAAICAgMAAAAAAAAAAAAAAAERAAIQIQMSUf/aAAgBAwEBPwHqU5aq
// Axx+y1tMQl4elj//xAAcEQEAAQUBAQAAAAAAAAAAAAABEQACEBIhA1H/2gAIAQIBAT8B3Bhqy7Zc
// enyiwmGgDhiOzj//xAAdEAABAwUBAAAAAAAAAAAAAAABAAIREBIhIkFR/9oACAEBAAY/ArZyn+Cg
// xtxWuJaoCnqDuin/xAAcEAABBAMBAAAAAAAAAAAAAAABABEhYRAxQVH/2gAIAQEAAT8hkEwPUUR9
// DYfE4nxtRpIkBTsayuALIiuY/9oADAMBAAIAAwAAABDWPTsf/8QAGhEAAwADAQAAAAAAAAAAAAAA
// AAEREDFBIf/aAAgBAwEBPxC0DVPcWm+Ce4OesrkE6bjH/8QAGBEBAQEBAQAAAAAAAAAAAAAAAREA
// QRD/2gAIAQIBAT8QahMiOc8YgSrnTY3ELclHXn//xAAcEAEBAAIDAQEAAAAAAAAAAAABEQAhMUFx
// EFH/2gAIAQEAAT8Qn3igmSZSj+c4N4zapMy9IjFV98wncN2iuLFsCEbDGxQkI6RO/n//2Q==</body>
//                         </mime_message>
//                     </subpart>
//                 </body>
//             </mime_message>
//         </subpart>
//     </body>
// </mime_message>
// 

// --------------------------------------------------------------
// --------------------------------------------------------------
// The MIME sample file loaded at the beginning of this example
// contains the following MIME:

// Subject: Test email.
// Content-Type: multipart/alternative;
// 	boundary="------------DB171738719FB06D67DEBAA0"
// MIME-Version: 1.0
// 
// --------------DB171738719FB06D67DEBAA0
// Content-Type: text/plain; charset="utf-8"; format=flowed
// Content-Transfer-Encoding: 7bit
// 
// This is a test.
// 
// --------------DB171738719FB06D67DEBAA0
// Content-Type: multipart/related;
// 	boundary="------------A940F1230E6F0105F03DB2CB"
// 
// --------------A940F1230E6F0105F03DB2CB
// Content-Type: text/html; charset="utf-8"
// Content-Transfer-Encoding: 8bit
// 
// <html><head>
// <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
//   </head>
//   <body bgcolor="#FFFFFF" text="#000000">
//     <p>This is a test.&nbsp; <img src="cid:part1.E16AE3B4.1505C436@chilkatsoft.com" height="20" width="20"></p>
//   </body>
// </html>
// 
// --------------A940F1230E6F0105F03DB2CB
// Content-Type: image/jpeg; name="starfish20.jpg"
// Content-Transfer-Encoding: base64
// Content-ID: <part1.E16AE3B4.1505C436@chilkatsoft.com>
// Content-Disposition: inline; filename="starfish20.jpg"
// 
// /9j/4AAQSkZJRgABAQEASABIAAD//gAmRmlsZSB3cml0dGVuIGJ5IEFkb2JlIFBob3Rvc2hvcD8g
// NC4w/9sAQwAQCwwODAoQDg0OEhEQExgoGhgWFhgxIyUdKDozPTw5Mzg3QEhcTkBEV0U3OFBtUVdf
// YmdoZz5NcXlwZHhcZWdj/9sAQwEREhIYFRgvGhovY0I4QmNjY2NjY2NjY2NjY2NjY2NjY2NjY2Nj
// Y2NjY2NjY2NjY2NjY2NjY2NjY2NjY2NjY2Nj/8IAEQgAFAAUAwERAAIRAQMRAf/EABcAAAMBAAAA
// AAAAAAAAAAAAAAIDBAX/xAAYAQADAQEAAAAAAAAAAAAAAAABAgMEAP/aAAwDAQACEAMQAAAB2kZY
// NNEijWKddfTmLgALWH//xAAbEAACAgMBAAAAAAAAAAAAAAABAgMRAAQSE//aAAgBAQABBQL0XqN+
// pM2aqJGMiqFFCyg7z//EABwRAAICAgMAAAAAAAAAAAAAAAERAAIQIQMSUf/aAAgBAwEBPwHqU5aq
// Axx+y1tMQl4elj//xAAcEQEAAQUBAQAAAAAAAAAAAAABEQACEBIhA1H/2gAIAQIBAT8B3Bhqy7Zc
// enyiwmGgDhiOzj//xAAdEAABAwUBAAAAAAAAAAAAAAABAAIREBIhIkFR/9oACAEBAAY/ArZyn+Cg
// xtxWuJaoCnqDuin/xAAcEAABBAMBAAAAAAAAAAAAAAABABEhYRAxQVH/2gAIAQEAAT8hkEwPUUR9
// DYfE4nxtRpIkBTsayuALIiuY/9oADAMBAAIAAwAAABDWPTsf/8QAGhEAAwADAQAAAAAAAAAAAAAA
// AAEREDFBIf/aAAgBAwEBPxC0DVPcWm+Ce4OesrkE6bjH/8QAGBEBAQEBAQAAAAAAAAAAAAAAAREA
// QRD/2gAIAQIBAT8QahMiOc8YgSrnTY3ELclHXn//xAAcEAEBAAIDAQEAAAAAAAAAAAABEQAhMUFx
// EFH/2gAIAQEAAT8Qn3igmSZSj+c4N4zapMy9IjFV98wncN2iuLFsCEbDGxQkI6RO/n//2Q==
// 
// --------------A940F1230E6F0105F03DB2CB--
// 
// --------------DB171738719FB06D67DEBAA0--
//