VB.NET

Set a MIME Body from Transfer-Encoded Text

Demonstrates the Chilkat Mime.SetBodyFromEncoded method, which sets the body from already transfer-encoded text. The first argument is the encoding (base64 or quoted-printable) and the second is the encoded text.

Background: Sometimes you already hold content in its encoded form — a Base64 string from a database or another API — and re-decoding just to have Chilkat re-encode it is wasteful. This method stores the encoded text as-is and records the matching transfer encoding, so the body is correct without a needless round trip. Only the standard reversible encodings, Base64 and quoted-printable, are accepted.

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VB.NET

Dim success As Boolean = False

'  Demonstrates the Mime.SetBodyFromEncoded method, which sets the body from already transfer-
'  encoded text.  The 1st argument is the encoding ("base64" or "quoted-printable") and the 2nd is
'  the encoded text.

Dim mime As New Chilkat.Mime

mime.ContentType = "text/plain"

'  The body is provided already Base64-encoded; Chilkat stores it without re-encoding.
Dim base64Body As String = "SGVsbG8sIHRoaXMgaXMgdGhlIGJvZHku"
success = mime.SetBodyFromEncoded("base64",base64Body)
If (success = False) Then
    Debug.WriteLine(mime.LastErrorText)
    Exit Sub
End If


'  The decoded body is the original text.
Dim decoded As String = mime.GetBodyDecoded()
If (mime.LastMethodSuccess = False) Then
    Debug.WriteLine(mime.LastErrorText)
    Exit Sub
End If

Debug.WriteLine(decoded)