public HeaderCollection Headers { get; set; }

Public Property Headers As HeaderCollection
	Get
	Set

// To use the code below, import MailBee namespaces at the top of your code.
using MailBee;
using MailBee.Mime;

// The actual code (put it into a method of your class).
MailMessage msg = new MailMessage();
msg.LoadMessage(@"C:\Docs\TestMail.eml");
foreach (MimePart part in msg.MimePartTree.GetAllParts())
{
    Console.WriteLine(string.Format("MimePart {0} headers values:", part.Name));
    foreach (Header hdr in part.Headers)
    {
        Console.WriteLine(hdr.Value);
    }
}

' To use the code below, import MailBee namespaces at the top of your code.
Imports MailBee
Imports MailBee.Mime

' The actual code (put it into a method of your class).
Dim msg As New MailMessage
msg.LoadMessage("C:\Docs\TestMail.eml")
For Each part As MimePart In msg.MimePartTree.GetAllParts()
    Console.WriteLine(String.Format("MimePart {0} headers values:", part.Name))
    For Each hdr As Header In part.Headers
        Console.WriteLine(hdr.Value)
    Next
Next