Compare OST Formats in C#
Native and high performance OST message comparison using server-side Aspose.Email for .NET APIs with out the need of Microsoft Office or PDF installation.
Aspose.Email for .NET
Overview
How to Compare OST File Using C#
In order to compare OST file, we’ll use
API which is a feature-rich, powerful and easy to use document manipulation 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.
Command
PM> Install-Package Aspose.Email
Steps for Comparing OST Files in C#
A basic message comparison with
APIs can be done with just a few lines of code to compare Outlook, Gmail, Apple Mail, Thunderbird documents and get difference between two emails.
- Load the two mail files for comparison.
- Get the body content for each mail file.
- Compare using GetMatrix Method.
- List the differences and set the body content.
- Save the file.
System Requirements
Our APIs are supported on all major platforms and Operating Systems. Before executing the code below, please make sure that you have the following prerequisites on your system.
- Microsoft Windows or a compatible OS with .NET Framework, .NET Core, and Xamarin Platforms
- Development environment like Microsoft Visual Studio
- Aspose.Email for .NET DLL referenced in your project - Install from NuGet using the Download button above
Compare OST Files - C#
// fileName1 = ost first file to compare
// fileName2 = ost second file to compare
var email1 = MapiHelper.GetMapiMessageFromFile(Path.Combine(Config.Configuration.WorkingDirectory, folderName, fileName1));
var email2 = MapiHelper.GetMapiMessageFromFile(Path.Combine(Config.Configuration.WorkingDirectory, folderName, fileName2));
var body1 = email1.Body.Split(new string[] { " " }, StringSplitOptions.None).SelectMany(SplitOfNewLine).ToArray();
var body2 = email2.Body.Split(new string[] { " " }, StringSplitOptions.None).SelectMany(SplitOfNewLine).ToArray();
var lcsMatrix = GetMatrix(body1, body2, StringComparer.Ordinal);
var list = new List( LSTnode(string))();
ListDiffTreeFromBacktrackMatrix(list, lcsMatrix, body1, body2, StringComparer.Ordinal);
email2.SetBodyContent(BuildBodyDiff(list), Email.Mapi.BodyContentType.Html);
email2.Save(outPath);
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.Online OST Comparison Live Demos
OST What is OST File Format
OST or Offline Storage Files represent user's mailbox data in offline mode on local machine upon registration with Exchange Server using Microsoft Outlook. It is automatically created on the first use of Microsoft Outlook upon connectivity with server. Once the file is created, the data is synchronized with the email server so that it is available offline as well in case of disconnectivity from email server. OST files can user mailbox items such as emails, contacts, calendar information, notes, tasks and other similar data. Users can create emails and other data items in OST file even in the absence of connection to the server, but these will not be synchronized with the server. Once the connection is established, the local file is synchronized with the server again so that both the server and the local copy are at the same level of information.
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