VB.NET

MIME Header Q and B Encoding and Decoding

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Demonstrates how to Q and B encode/decode. VB.NET

Dim success As Boolean = False

Dim sb As New Chilkat.StringBuilder

sb.Append("This is a test")

Debug.WriteLine(sb.GetEncoded("B","utf-8"))
' output is:
' =?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=

Debug.WriteLine(sb.GetEncoded("Q","iso-8859-1"))
' output is:
' =?utf-8?Q?This_is_a_test?=

Dim sb2 As New Chilkat.StringBuilder

sb2.Append("=?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=")
sb2.Decode("B","utf-8")
Debug.WriteLine(sb2.GetAsString())

' output is:
' This is a test

sb2.Clear()
sb2.Append("=?utf-8?Q?This_is_a_test?=")
sb2.Decode("Q","utf-8")
Debug.WriteLine(sb2.GetAsString())

' output is:
' This is a test

' "B" or "Q" will decode both B and Q.
sb2.Clear()
sb2.Append("=?utf-8?Q?This_is_a_test?= 123 =?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=")
sb2.Decode("Q","utf-8")
Debug.WriteLine(sb2.GetAsString())

' output is:
' This is a test 123 This is a test