Xojo Plugin

Get the Name of the Nth Header Field

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Demonstrates the Chilkat Email.GetHeaderFieldName method, which returns the name of the Nth header field. The NumHeaderFields property gives the count, and indexing is zero-based. This example enumerates the names of all header fields.

Background: Enumerating headers by index — rather than looking them up by name — lets you discover which fields a message actually contains and see repeated fields (like multiple Received lines) in order. Pair GetHeaderFieldName with GetHeaderFieldValue at the same index to walk the entire header block as name/value pairs.

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//  Demonstrates the GetHeaderFieldName method, which returns the name of the Nth header
//  field.  The NumHeaderFields property gives the number of header fields; indexing is
//  zero-based.

Dim email As New Chilkat.Email
email.Subject = "Enumerate header names"
email.From = "alice@example.com"
Dim success As Boolean
success = email.AddTo("Bob","bob@example.com")

Dim n As Int32
n = email.NumHeaderFields
Dim i As Int32
For i = 0 To n - 1
    System.DebugLog("Header " + Str(i) + " name: " + email.GetHeaderFieldName(i))
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