VB.NET
VB.NET
Enumerate the Header Fields of an Email
See more Email Object Examples
Demonstrates the read-only Chilkat Email.NumHeaderFields property together with GetHeaderFieldName and GetHeaderFieldValue to enumerate every header field. Indexing is zero-based, so fields run from 0 to NumHeaderFields - 1. Repeated header fields (a field name that appears more than once) are counted separately. This example builds a small email and prints each header field.
Background: A header field is a single
Name: value line at the top of a MIME message. The same field name can legitimately appear multiple times — for example, a message can carry several Received lines, one added by each mail server it passed through. That is why enumerating by index (rather than looking up by name) matters: it lets you see every occurrence in the order it appears.Chilkat VB.NET Downloads
' Demonstrates the read-only Email.NumHeaderFields property and enumerating each
' header field by zero-based index using GetHeaderFieldName and GetHeaderFieldValue.
Dim email As New Chilkat.Email
email.Subject = "Header field enumeration"
email.From = "mary@example.com"
email.AddTo("Joe","joe@example.com")
Dim n As Integer = email.NumHeaderFields
Debug.WriteLine("NumHeaderFields = " & n)
Dim i As Integer
For i = 0 To n - 1
Debug.WriteLine(email.GetHeaderFieldName(i) & ": " & email.GetHeaderFieldValue(i))
Next