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EML
Compare EML Formats in C#
Native and high performance EML 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 EML File Using C#
In order to compare EML 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 EML 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 EML Files - C#
// fileName1 = eml first file to compare
// fileName2 = eml 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);