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Convert ICS to PST via C#

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

How to Convert ICS to PST Using C#

In order to convert ICS to PST, 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.

<h3>Package Manager Console Command</h3>

PM> Install-Package Aspose.Email

Steps to Convert ICS to PST via C#

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

  • Load ICS file with Calendar.Appointment.Load.
  • Save as MSG to MemoryStream.
  • Create a PST file
  • Pass the output file path with PST file extension.
  • Call AddMessage method.
  • Pass the MapiMessage loaded from MemoryStream.
  • PST 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 PST 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);
// create a PST file
using var pst = PersonalStorage.Create("Saved File.pst", FileFormatVersion.Unicode);
// create a calendar folder
var calendarFolder = pst.CreatePredefinedFolder("Calendar", StandardIpmFolder.Appointments);
// add MSG to the calendar folder
  • Free App to Convert ICS to PST

    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 OFT (Outlook Email Templates)
    ICS TO OST (Offline Storage Files)