using System;
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
using Bytescout.XLS;

namespace HelloWorld
{
class Program
{
static void Main(string[] args)
{
// Create new XLSDocument
XLSDocument document = new XLSDocument();

// Add new worksheet
Worksheet worksheet = document.WorkBook.Worksheets.Add("HelloWorld");

// Set cell value
worksheet.Cell(0, 0).Value = "Very, very, very, very long text";

// Shrink text
worksheet.Cell(0, 0).ShrinkToFit = true;

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

// Close document
document.Close();

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

Download example source code: bytescoutxls_using_shrink_to_fit_for_cells.zip (10 KB)