HTML JPG PDF XML ICS
  Product Family
OST

Convert ICS to OST via C#

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

How to Convert ICS to OST Using C#

In order to convert ICS to OST, 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

NuGet

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 OST via C#

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

  • Load ICS file with Calendar.Appointment.Load.
  • Save as MSG to MemoryStream.
  • Open an OST file
  • Pass the output file path with OST file extension.
  • Call AddMessage method.
  • Pass the MapiMessage loaded from MemoryStream.
  • 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 OST C# Conversion

// load the ICS file to be converted
// save ICS as a MSG
using var msgStream = new MemoryStream();
Aspose.Email.Calendar.Appointment
    .Load("My File.ics")
    .Save(msgStream, AppointmentSaveFormat.Msg);
// open an OST file
using var pst = PersonalStorage.FromFile("Saved File.ost");
// get a calendar folder
var calendarFolder = pst.GetPredefinedFolder(StandardIpmFolder.Appointments);
// add MSG to the calendar folder
calendarFolder.AddMessage(MapiMessage.Load(msgStream));
 
  • Free App to Convert ICS to OST

    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 PST (Outlook Personal Storage Files)