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Hidden Formula - C#

Spreadsheet SDK sample in C# demonstrating ‘Hidden Formula’

Program.cs
using System.Diagnostics;
using System.IO;
using Bytescout.Spreadsheet;

namespace HiddenFormula
{
    class Program
    {
        static void Main(string[] args)
        {
            // Open spreadsheet from file
            Spreadsheet document = new Spreadsheet();
           document.LoadFromFile("example.xls");

            // Get first worksheet
            Worksheet worksheet = document.Workbook.Worksheets[0];

            // Hide formula in B9 cell
            worksheet.Cell("B9").HiddenFormula = true;
            // Protect the worksheet with password
            worksheet.Protect("password");
            
            // Delete output file if exists
            if (File.Exists("changed.xls"))
            {
                File.Delete("changed.xls");
            }

            // Save document
            document.SaveAs("changed.xls");

            // Close spreadsheet
            document.Close();

            // Open generated XLS document in default program
            Process.Start("changed.xls");
        }
    }
}

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