Aspose.Cells  for .NET

Insert comments in XLSM file via C#

Build your own .NET application to manipulate comments & authors in document files using server-side APIs.

Insert comments in XLSM File Using .NET

With Aspose.Cells for .NET library, you can easily insert comments in XLSM file 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

System Requirements

Aspose.Cells 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, .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.

How to insert comments in XLSM file via C#

You need aspose.cells.dll to try the code in your environment.

  • Load XLSM file by creating an instance of Workbook
  • Insert comments to the Worksheet in a Cell
  • Save the workbook

In Office 365, comments are for conversations, you can use the following C# code to insert and remove comments in XLSM file.


C# sample code to Insert and remove comments in XLSM file

Free App to remove Annotations from XLSM file
Input file
  using Aspose.Cells;   
  var workbook = new Workbook("Input.xlsx");
  foreach (Worksheet _ws in workbook.Worksheets)

XLSM What is XLSM File Format?

Files with XLSM extension is a type of Spreadsheet files that support Macros. From application point of view, a Macro is set of instructions that are used for automating processes. A macro is used to record the steps that are performed repeatedly and facilitates performing the actions by running the macro again. Macros are programmed with Microsoft’s Visual Basic for Applications (VBA) from within the Excel Workbook using the Visual Basic Editor and can be run/debug directly from there.

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Insert Comments to Other Supported Excel Formats

Using C#, one can easily insert comments in other Excel format files.

ODS (OpenDocument Spreadsheet File)
XLS (Excel Binary Format)
XLSB (Binary Excel Workbook File)
XLSM (Spreadsheet File)
XLSX (OOXML Excel File)