การแปลง EML และ MIME

using System.IO;
using Aspose.Email.Foss.Msg;

// From file path
var message = MapiMessage.LoadFromEml("incoming.eml");

// From stream
using var stream = File.OpenRead("incoming.eml");
var message2 = MapiMessage.LoadFromEml(stream);

// From byte array
var emlBytes = File.ReadAllBytes("incoming.eml");
var message3 = MapiMessage.LoadFromEml(emlBytes);

Console.WriteLine(message.Subject);
Console.WriteLine(message.SenderEmailAddress);
Console.WriteLine(message.Recipients.Count);
Console.WriteLine(message.Attachments.Count);
Console.WriteLine(message.HtmlBody);

// To file path
message.SaveToEml("output.eml");

// To stream
using var outStream = File.Create("output.eml");
message.SaveToEml(outStream);

// To byte array
byte[] emlData = message.SaveToEml();

using System.IO;
using Aspose.Email.Foss.Msg;

var message = MapiMessage.LoadFromEml("incoming.eml");
message.Save("converted.msg");

using var message = MapiMessage.FromFile("original.msg");
message.SaveToEml("exported.eml");

// Verify round-trip
var original = MapiMessage.LoadFromEml("test.eml");
original.Save("test.msg");

using var reloaded = MapiMessage.FromFile("test.msg");
reloaded.SaveToEml("roundtrip.eml");

// Compare: original.eml and roundtrip.eml should have
// matching Subject, From, To, and attachment count