Aspose.Email  for .NET

ICS File Viewer for .NET

View ICS without needing Microsoft Outlook or Thunderbird installed.

How to View ICS File Using C#

In order to view ICS file, we’ll use

Aspose.Email for .NET

API which is a feature-rich, powerful and easy to use API for C# platform to be used with any Viewer. 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 View ICS via C#

Aspose.Email makes it easy for the developers to view the ICS file with just few lines of code.

  1. Load ICS file in an instance of MailMessage via Load method
  2. Call the MailMessage.Save method to save ICS in HTML format
  3. Call Process.Start with path to resultant HTML to load ICS content in default browser

System Requirements

Aspose.Email for .NET is supported on all major operating systems. Just make sure that you have the following prerequisites.

  • Microsoft Windows or a compatible OS with .NET Framework, .NET Core, and Xamarin Platforms
  • Development environment like Microsoft Visual Studio
  • Aspose.Email for .NET referenced in your project

C# code to view ICS

string output = System.IO.Path.GetTempPath() + Guid.NewGuid().ToString() + ".html";

// load the ICS file in an instance of MailMessage
using (var message = Aspose.Email.MailMessage.Load("template.ics"))
    // save ICS in HTML format
    message.Save(output, Aspose.Email.SaveOptions.DefaultHtml);
// load resultant HTML in default browser
  • About Aspose.Email for .NET API

    Aspose.Email is a Microsoft Outlook and Thunderbird formats parsing solution. One can easily create, manipulate, convert email and storage formats such as MSG, EMLX, EML and MHT. Handling of email attachments, customization of message headers and implementation of different network protocols like POP3, IMAP & SMTP to send & receive emails is much easier. Its a standalone API and does not require Microsoft Outlook or any other software installation.

    Free App to View ICS

    ICS What is ICS File Format

    The Internet Calendaring and Scheduling Core Object Specification (iCalendar) is an internet standard(RFC 2445) for exchanging and deploying the calendaring events and scheduling. The iCalendar format is interoperable, thereby ensuring the exchange of calendar information among the users having different email applications. iCalendar formats the input data as a Multipurpose Internet Mail Extensions (MIME) and facilitates the object exchanged via different transport protocols. These transport protocols can be SMTP, HTTP, point-to-point asynchronous communication, and physical media based-network transport. iCalendar allows users to share events, date/time dependent tasks, and free/busy information via emails to other users who can respond back. iCalendar files store using suffixes ".ics" ".iCalendar" or ".ifb" with a MIME type of "text/calendar".

    Read More

    Other Supported Viewer Formats

    Using C#, One can also view many other file formats including.

    EML (Outlook Email Messages)
    EMLX (Apple EMLX Format)
    MBOX (Electronic Mail Messages)
    MSG (Outlook & Exchange Format)
    OFT (Outlook Email Templates)
    OST (Offline Storage Files)
    PST (Outlook Personal Storage Files)
    VCF (Virtual Card Format)