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VB.NET UWP/WinRT Examples

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(VB.NET UWP/WinRT) Controlling Charset of HTML Email

This example demonstrates how to change the charset of an HTML email by setting the Charset property.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

'  This example requires the Chilkat Email API to have been previously unlocked.
'  See Unlock Chilkat MailMan for sample code.

Dim success As Boolean

Dim email As New Chilkat.Email

'  Tell Chilkat you want the email to be utf-8.
email.Charset = "utf-8"

email.From = "somebody@gmail.com"
email.AddTo("Joe","joe_somebody@gmail.com")
email.Subject = "This is a test"

'  Load a utf-8 HTML file that will be the body of this email.
'  The HTML contains this line to specify the charset:
' 
'      <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
' 
'  The sample HTML is available here:  https://chilkatsoft.com/exampleData/sample_utf8.html
' 
Dim sbHtml As New Chilkat.StringBuilder
sbHtml.LoadFile("qa_data/html/sample_utf8.html","utf-8")

email.SetHtmlBody(sbHtml.GetAsString())

'  If this email was sent as-is, it would look like this:
Dim mailman As New Chilkat.MailMan
Debug.WriteLine(mailman.RenderToMime(email))

'  The MIME that would be sent is this:

'  	MIME-Version: 1.0
'  	Date: Wed, 08 Mar 2017 09:39:06 -0600
'  	Message-ID: <53930EB7EFA37B121FB2CC0E57E9FA4D02AD86A3@CHILKAT13>
'  	Content-Type: text/html; charset=utf-8
'  	Content-Transfer-Encoding: quoted-printable
'  	X-Priority: 3 (Normal)
'  	From: somebody@gmail.com
'  	To: Joe <joe_somebody@gmail.com>
'  	Subject: This is a test
' 
'  	<html>
'  	<head>
'  	<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf-8" />
'  	</head>
'  	<body>
'  	<p>=C3=A0=C3=A8=C3=AC=C3=B2=C3=B9=C3=80=C3=88=C3=8C=C3=92=C3=99=C3=A1=C3=A9=
'  	=C3=AD=C3=B3=C3=BA=C3=BD=C3=81=C3=89=C3=8D=C3=93=C3=9A=C3=9D=C3=A2=C3=AA=C3=
'  	=AE=C3=B4=C3=BB=C3=82=C3=8A=C3=8E=C3=94=C3=9B=C3=A3=C3=B1=C3=B5=C3=83=C3=91=
'  	=C3=95=C3=A4=C3=AB=C3=AF=C3=B6=C3=BC=C3=BF=C3=84=C3=8B=C3=8F=C3=96=C3=9C=C5=
'  	=B8=C3=A5=C3=85</p>
'  	</body>
'  	</html>
' 


'  -----------------------------------------
'  Let's say we want to send iso-8859-1 instead...
'  Just set the email object's Charset property, like this:
email.Charset = "iso-8859-1"

'  Now see what would be sent:
Debug.WriteLine(mailman.RenderToMime(email))

'  	MIME-Version: 1.0
'  	Date: Wed, 08 Mar 2017 09:45:03 -0600
'  	Message-ID: <DD08A5B56532AF11505ACF21A1338E0A3024D34A@CHILKAT13>
'  	Content-Type: text/html; charset=iso-8859-1
'  	Content-Transfer-Encoding: quoted-printable
'  	X-Priority: 3 (Normal)
'  	From: somebody@gmail.com
'  	To: Joe <joe_somebody@gmail.com>
'  	Subject: This is a test
' 
'  	<html>
'  	<head><META http-equiv=3D"Content-Type" content=3D"text/html;charset=3Diso-=
' 	8859-1">
'
'  	</head>
'  	<body>
'  	<p>=E0=E8=EC=F2=F9=C0=C8=CC=D2=D9=E1=E9=ED=F3=FA=FD=C1=C9=CD=D3=DA=DD=E2=EA=
'  	=EE=F4=FB=C2=CA=CE=D4=DB=E3=F1=F5=C3=D1=D5=E4=EB=EF=F6=FC=FF=C4=CB=CF=D6=DC=
'  	=9F=E5=C5</p>
'  	</body>
'  	</html>

'  -----------------------------------------
'  Let's say we don't want quoted-printable, but instead want 8bit.
'  The AddHeaderField method replaces the header field if it already exists.
'  Do this to get 8bit encoding instead of quoted-printable.
email.AddHeaderField("Content-Transfer-Encoding","8bit")
'  Now see what would be sent:
'  (Note: Because RenderToMime returns a string, it generally not possible to render MIME to a string
'  IF the MIME contains binary data and uses the 8bit encoding (for example, if a JPEG image was attached).
'  However, the email would still be sent correctly.)
Debug.WriteLine(mailman.RenderToMime(email))

'  	MIME-Version: 1.0
'  	Date: Wed, 08 Mar 2017 09:51:33 -0600
'  	Message-ID: <F38B4A8D33C111057E901782305E01AC5BE31B98@CHILKAT13>
'  	Content-Type: text/html; charset=iso-8859-1
'  	Content-Transfer-Encoding: 8bit
'  	X-Priority: 3 (Normal)
'  	From: somebody@gmail.com
'  	To: Joe <joe_somebody@gmail.com>
'  	Subject: This is a test
' 
'  	<html>
'  	<head><META http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
' 
'  	</head>
'  	<body>
'  	<p>àèìòùÀÈÌÒÙáéíóúýÁÉÍÓÚÝâêîôûÂÊÎÔÛãñõÃÑÕäëïöüÿÄËÏÖÜŸåÅ</p>
' 	</body>
' 	</html>
'

'  	</body>
'  	</html>
' 

 

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