(VB.NET) Append Part to MIME

Demonstrates the AppendPart method for adding sub-parts to MIME.

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

Dim success As Boolean

' Create a text/plain part.
Dim ptMime As New Chilkat.Mime
ptMime.SetBodyFromPlainText("This is the plain text body")
Debug.WriteLine(ptMime.GetMime())
Debug.WriteLine("****")

' The ptMime contains:
' ---------------------------------------
' 	Content-Type: text/plain
' 	Content-Transfer-Encoding: 7bit
' 
' 	This is the plain text body
' ---------------------------------------

' Start with an empty MIME object...
Dim topLevelMime As New Chilkat.Mime

' Initialize it to a multipart Content-Type.  We'll use multipart/mixed.
topLevelMime.NewMultipartMixed()

' Append the ptMime as a child.
topLevelMime.AppendPart(ptMime)
Debug.WriteLine(topLevelMime.GetMime())
Debug.WriteLine("****")

' The topLevelMime contains:
' --------------------------
' 	Content-Type: multipart/mixed; boundary="------------010907090104040508040404"
' 
' 	--------------010907090104040508040404
' 	Content-Type: text/plain
' 	Content-Transfer-Encoding: 7bit
' 
' 	This is the plain text body
' 	--------------010907090104040508040404--
' 


' IMPORTANT: A copy of the MIME passed in AppendPart is appended.
' Therefore, in this case, changing ptMime does not change the text/plain sub-part in topLevelMime.
' For example:
ptMime.SetBody("this is the new plain text body.")
' topLevelMime is unchanged.
Debug.WriteLine(topLevelMime.GetMime())
Debug.WriteLine("****")


' To change the content in topLevelMime, we must get the text/plain part.
' For example:
Dim ptMime2 As Chilkat.Mime = topLevelMime.GetPart(0)
ptMime2.SetBody("this is the new plain text body.")

' Now topLevelMime is changed.
Debug.WriteLine(topLevelMime.GetMime())