Aspose.Cells  for .NET


High-speed C# library for merging SPREADSHEETML to MHTML. Use our excel conversion API to develop high-level, platform independent software in C#. This is a professional software solution to import and export Excel, CSV, OpenOffice, PDF, HTML, image, and many other excel formats.


How do I merge SPREADSHEETML to MHTML? With Aspose.Cells for .NET library, you can easily merge SPREADSHEETML to MHTML programmatically with a few lines of code. Aspose.Cells for .NET is capable of building cross-platform applications with the ability to generate, modify, convert, render and print all Excel files. .NET Excel API not only convert between spreadsheet formats, it can also render Excel files as images, PDF, HTML, ODS, CSV, SVG, JSON, WORD, PPT and more, thus making it a perfect choice to exchange documents in industry-standard formats. Open NuGet package manager, search for Aspose.Cells and install. You may also use the following command from the Package Manager Console.

Package Manager Console Command

PM> Install-Package Aspose.Cells


The following example demonstrates how to merge SPREADSHEETML to MHTML in Aspose.Cells for .NET.

Follow the easy steps to merge SPREADSHEETML to MHTML. Upload your files, call Workbook.Combine method for merging files, and then save it to MHTML file. If you develop code in C#, this will be simpler than it sounds. See C# example that merges SPREADSHEETML to MHTML.

Sample Code to Merge SPREADSHEETML to MHTML in C#
Select two files
Output format
  using Aspose.Cells;     
  var workbook = new Workbook("Input.xlsx");
  workbook.Combine(new Workbook("Combine.xlsx");

How to Merge SPREADSHEETML to MHTML via C#

Need to merge SPREADSHEETML to MHTML programmatically? A basic document merging and concatenating with Aspose.Cells for .NET APIs can be done with just few lines of code.

  • Install ‘Aspose.Cells for .NET’.
  • Add a library reference (import the library) to your C# project.
  • Load the SPREADSHEETML file with Workbook class.
  • Call the Workbook.Combine method for merging files.
  • Call the Workbook.Save method and pass the output file name as a parameter.
  • Now you can open and use the output file in Microsoft Office, Adobe PDF or any other compatible program.

.NET library to merge SPREADSHEETML to MHTML

There are two alternative options to install “Aspose.Cells for .NET” onto your system. Please choose one that resembles your needs and follow the step-by-step instructions:

  1. Install a NuGet Package . See Documentation
  2. Install the library using Package Manager Console within Visual Studio IDE

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, .NET Core or Mono Platforms.
  • Development environment like Microsoft Visual Studio.
  • Our product is fully cross-platform and supports Windows, Linux, MacOS, Azure, AWS Lambda.


XML stands for Extensible Markup Language that is similar to HTML but different in using tags for defining objects. The whole idea behind creation of XML file format was to store and transport data without being dependent on software or hardware tools. Its popularity is due to it being both human as well as machine readable. This enables it to create common data protocols in the form of objects to be stored and shared over network such as World Wide Web (WWW). The "X" in XML is for extensible which implies that the language can be extended to any number of symbols as per user requirements. It is for these features that many standard file formats make use of it such as Microsoft Open XML, LibreOffice OpenDocument, XHTML and SVG.

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MHTML What is MHTML File Format?

Files with MHTML extension represent a web page archive format that can be created by a number of different applications. The format is known as archive format because it saves the web HTML code and associated resources in a single file. These resources include anything linked to the webpage such as images, applets, animations, audio files and so on. MHTML files can be opened in a variety of applications such as Internet Explorer and Microsoft Word. Microsoft Windows uses MHTML file format for recording scenarios of problems observed during the usage of any application on Windows that raises issues. The MHTML file format encodes the page contents similar to specifications defined in message/rfc822 which is plain text email related specifications.

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Other Supported Merging Formats

Using C#, One can also merge spreadsheetml to many other file formats including.

Merge SPREADSHEETML to DOCX (Microsoft Word document)
Merge SPREADSHEETML to SQL (Structured Query Language)
Merge SPREADSHEETML to EMF (Enhanced Metafile Format)
Merge SPREADSHEETML to GIF (Graphical Interchange Format)
Merge SPREADSHEETML to HTML (Hyper Text Markup Language)
Merge SPREADSHEETML to MD (Markdown Language)
Merge SPREADSHEETML to MHTML (Web Page Archive Format)
Merge SPREADSHEETML to ODS (OpenDocument Spreadsheet File)
Merge SPREADSHEETML to PDF (Portable Document Format)
Merge SPREADSHEETML to PNG (Portable Network Graphics)
Merge SPREADSHEETML to SVG (Scalable Vector Graphics)
Merge SPREADSHEETML to TIFF (Tagged Image Format)
Merge SPREADSHEETML to TSV (Tab-Separated Values)
Merge SPREADSHEETML to XLS (Excel Binary Format)
Merge SPREADSHEETML to XLSB (Binary Excel Workbook File)
Merge SPREADSHEETML to XLSM (Spreadsheet File)
Merge SPREADSHEETML to XLT (Microsoft Excel Template)
Merge SPREADSHEETML to XLTM (Excel Macro-enabled Template)
Merge SPREADSHEETML to XLTX (Office OpenXML Excel Template)
Merge SPREADSHEETML to XML (Extensible Markup Language)
Merge SPREADSHEETML to XPS (XML Paper Specifications)
Merge SPREADSHEETML to JSON (JavaScript Object Notation)