Chilkat Examples

ChilkatHOMEAndroid™Classic ASPCC++C#Mono C#.NET Core C#C# UWP/WinRTDataFlexDelphi ActiveXDelphi DLLVisual FoxProJavaLianjaMFCObjective-CPerlPHP ActiveXPHP ExtensionPowerBuilderPowerShellPureBasicCkPythonChilkat2-PythonRubySQL ServerSwift 2Swift 3/4TclUnicode CUnicode C++Visual Basic 6.0VB.NETVB.NET UWP/WinRTVBScriptXojo PluginNode.jsExcelGo

VB.NET UWP/WinRT Examples

Web API Categories

ASN.1
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Azure Cloud Storage
Azure Service Bus
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Compression
DKIM / DomainKey
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
ECC
Email Object
Encryption
FTP
FileAccess
Firebase
GMail REST API
Geolocation
Google APIs
Google Calendar
Google Cloud Storage
Google Drive
Google Photos
Google Sheets
Google Tasks
Gzip
HTML-to-XML/Text

HTTP
HTTP Misc
IMAP
JSON
JSON Web Encryption (JWE)
JSON Web Signatures (JWS)
JSON Web Token (JWT)
Java KeyStore (JKS)
MHT / HTML Email
MIME
Microsoft Graph
NTLM
OAuth1
OAuth2
OneDrive
OpenSSL
Outlook
PEM
PFX/P12
POP3
PRNG
REST
REST Misc
RSA
SCP
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
SharePoint
Socket/SSL/TLS
Spider
Stream
Tar Archive
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(VB.NET UWP/WinRT) Add, Remove, Update MIME Header Fields

Demonstrates how to add, remove, or update the content of MIME header fields.

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.

Dim mime As New Chilkat.Mime

' The contents of this MIME file are shown below, 
' and is also available at https://www.chilkatsoft.com/sampleMime.txt
Dim success As Boolean = mime.LoadMimeFile("qa_data/mime/sampleMime.txt")
If (success <> True) Then
    Debug.WriteLine(mime.LastErrorText)
    Exit Sub
End If


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

' Adding a top-level MIME header is easy.
mime.AddHeaderField("hello-world","Hello World!")
' If a header field of the same name already exists, the AddHeaderField
' method adds a duplicate.
mime.AddHeaderField("Subject","This is the 2nd Subject header.")
Debug.WriteLine(mime.GetEntireHead())
Debug.WriteLine("-")

' The top-level header now looks like this:
' 
' 	Subject: Test email.
' 	Content-Type: multipart/alternative; boundary="------------DB171738719FB06D67DEBAA0"
' 	MIME-Version: 1.0
' 	hello-world: Hello World!
' 	Subject: This is the 2nd Subject header.
' 

' The RemoveHeaderField method can remove the 1st occurrance, or all occurrences.
Dim bAllOccurrences As Boolean = True
' Remove all occurrences of the Subject header;
mime.RemoveHeaderField("Subject",bAllOccurrences)
Debug.WriteLine(mime.GetEntireHead())
Debug.WriteLine("-")

' After removing all Subject header fields, the top-level header now looks like this:
' 
' Content-Type: multipart/alternative; boundary="------------DB171738719FB06D67DEBAA0"
' MIME-Version: 1.0
' hello-world: Hello World!
' 

' The content of a header field can be updated by calling SetHeaderField.
' If the header field does not already exist, it is added.  Otherwise it is updated.
' Note: The order of header fields SHOULD never matter.
mime.SetHeaderField("hello-world","Goodbye World.")
Debug.WriteLine(mime.GetEntireHead())
Debug.WriteLine("-")

' Now we have:
' 
' 	Content-Type: multipart/alternative; boundary="------------DB171738719FB06D67DEBAA0"
' 	MIME-Version: 1.0
' 	hello-world: Goodbye World.
' 


' To add/update/delete header fields in sub-parts, navigate to
' the sub-part and do the same..

Dim mpRelated As Chilkat.Mime = mime.GetPart(1)
Dim pJpg As Chilkat.Mime = mpRelated.GetPart(1)

' Add a header to the image/jpeg sub-header.
pJpg.SetHeaderField("CustomHeader","This is the custom header value.")




' View the entire MIME..
Debug.WriteLine(mime.GetMime())



' --------------------------------------------------------------
' --------------------------------------------------------------
' 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--
' 

 

© 2000-2019 Chilkat Software, Inc. All Rights Reserved.