Product Family

Convert ICS to OFT via C#

ICS to OFT C# conversion using .NET API without needing Outlook® or Thunderbird®.

How to Convert ICS to OFT Using C#

In order to convert ICS to OFT, we’ll use

Aspose.Email for .NET

API which is a feature-rich, powerful and easy to use document manipulation and conversion API for C# platform. Open


package manager, search for Aspose.Email and install. You may also use the following command from the Package Manager Console.

Package Manager Console Command

PM> Install-Package Aspose.Email

Steps to Convert ICS to OFT via C#

.NET programmers can easily load & convert ICS files to OFT in just a few lines of code.

  • Load ICS file with Calendar.Appointment.Load.
  • Save as MSG to MemoryStream.
  • Load from MemoryStream to MapiMessage.
  • Call MapiMessage.Save method.
  • Pass the output file path with OFT file extension.
  • OFT file will be saved at the specified path.

System Requirements

Before running the .NET conversion code, make sure that you have the following prerequisites.

  • Microsoft Windows or a compatible OS with .NET Framework, .NET Core, and PHP, VBScript, Delphi, C++ via COM Interop.
  • Development environment like Microsoft Visual Studio.
  • Aspose.Email for .NET DLL referenced in your project.
  • Include namespace in relevant class.

This sample code shows ICS to OFT C# Conversion

// load the ICS file to be converted
// save ICS as a MSG
using var msgStream = new MemoryStream();
  .Load("My File.ics")
  .Save(msgStream, AppointmentSaveFormat.Msg);
// save MSG as an OFT
  .Save("Saved File.oft", new MsgSaveOptions(MailMessageSaveType.OutlookMessageFormatUnicode) {SaveAsTemplate = true});
  • Free App to Convert ICS to OFT

    Other Supported Conversions

    You can also convert ICS into many other file formats including few listed below.

    ICS TO EML (Outlook Email Messages)
    ICS TO EMLX (Apple EMLX Format)
    ICS TO HTML (Hyper Text Markup Language)
    ICS TO MBOX (Electronic Mail Messages)
    ICS TO MHTML (Web Page Archive Format)
    ICS TO MSG (Outlook & Exchange Format)
    ICS TO OST (Offline Storage Files)
    ICS TO PST (Outlook Personal Storage Files)