How to set file properties for Excel file in C#.NET

EasyXLS Excel library can be used to export Excel files in C#. The library works with .NET Framework or .NET Core platform.

Step 1: Download EasyXLS Excel Library for .NET

To download the trial version of EasyXLS Excel Library, press the below button:

Download EasyXLS™ Excel Library for C#

If you already own a license key, you may login and download EasyXLS from your account.

Install the downloaded EasyXLS installer for v8.6 or earlier.

Step 2: License file setup

Step required for EasyXLS v9.0 or later.

If you are using a trial, generate a trial license file from EasyXLS trials page. The trial license is valid for 30-days.

If you own a license key, you may login to the account that purchased the license and generate the license file from:

Setup the license file into your project using these guidelines.

Step 3: Create a C# project

If don't have a project, create one as ASP.NET web application, windows forms app, console application, class library or service.

Step 4: Include EasyXLS library into project

EasyXLS.dll must be added as reference to your project. EasyXLS.dll can be found:
- Inside the downloaded archive at Step 1 for EasyXLS v9.0 or later
- Under installation path for EasyXLS v8.6 or earlier, in "Dot NET version" folder.

Add EasyXLS reference

Step 5: Run C# code that sets custom and details properties for Excel file

Execute the following C# code that sets the document properties of an Excel file, properties like subject, manager and a custom property.

/* -----------------------------------------------------------------------
 * Tutorial 33
 * This tutorial shows how to set document properties for Excel file in C#, 
 * like 'Subject' property for summary information, 'Manager' property for
 * document summary information and a custom property.
 * ----------------------------------------------------------------------- */

using System;
using EasyXLS;
using EasyXLS.Constants;

public class Tutorial33
    static void Main()
        Console.WriteLine("Tutorial 33\n-----------\n");

        // Create an instance of the class that exports Excel files
        ExcelDocument workbook = new ExcelDocument(1);

        // Set the 'Subject' document property
        workbook.getSummaryInformation().setSubject("This is the subject");

        // Set the 'Manager' document property
        workbook.getDocumentSummaryInformation().setManager("This is the manager");

        // Set a custom document property
        workbook.getDocumentSummaryInformation().setCustomProperty("PropertyName", FileProperty.VT_NUMBER, "4");

        // Export Excel file
        Console.WriteLine("Writing file C:\\Samples\\Tutorial33 - Excel file properties.xlsx.");
        workbook.easy_WriteXLSXFile("C:\\Samples\\Tutorial33 - Excel file properties.xlsx");

        // Confirm export of Excel file
        String sError = workbook.easy_getError();
        if (sError.Equals(""))
            Console.Write("\nFile successfully created. Press Enter to Exit...");
            Console.Write("\nError encountered: " + sError + "\nPress Enter to Exit...");

        // Dispose memory


EasyXLS Excel libraries:

Excel Library for C#
full .NET version to import, export or convert Excel files
Excel Writer for C#
.NET version to create and export Excel files
Download EasyXLS™ Excel Library for C#

File formats:

Office 365
MS Excel 2021 - 2024
MS Excel 2007 - 2019
MS Excel 97 - 2003