DataFlex

Get the Name of the Nth Header Field

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.

Chilkat DataFlex Downloads

Download Chilkat for DataFlex

DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoEmail
    Boolean iSuccess
    Integer n
    Integer i
    String sTemp1

    //  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.

    Get Create (RefClass(cComChilkatEmail)) To hoEmail
    If (Not(IsComObjectCreated(hoEmail))) Begin
        Send CreateComObject of hoEmail
    End
    Set ComSubject Of hoEmail To "Enumerate header names"
    Set ComFrom Of hoEmail To "alice@example.com"
    Get ComAddTo Of hoEmail "Bob" "bob@example.com" To iSuccess

    Get ComNumHeaderFields Of hoEmail To n

    For i From 0 To (n - 1)
        Get ComGetHeaderFieldName Of hoEmail i To sTemp1
        Showln "Header " i " name: " sTemp1
    Loop



End_Procedure