Convert CSV to Excel in C# with Aspose.cells

convert_csv_to_excel.cs

using System;
using Aspose.Cells;

namespace CsvToExcelDemo
{
    class Program
    {
        static void Main(string[] args)
        {
            // Path to the source CSV file
            string csvPath = @"C:\Data\sample.csv";

            // Path for the output Excel file
            string excelPath = @"C:\Data\sample.xlsx";

            // Load CSV into a Workbook object
            Workbook workbook = new Workbook(csvPath, new LoadOptions(LoadFormat.Csv));

            // Get the first worksheet
            Worksheet sheet = workbook.Worksheets[0];

            // Optional: Auto‑fit all columns for better readability
            sheet.AutoFitColumns();

            // Optional: Set a header style for the first row
            Style headerStyle = workbook.CreateStyle();
            headerStyle.Font.IsBold = true;
            sheet.Cells.Rows[0].ApplyStyle(headerStyle, new StyleFlag() { FontBold = true });

            // Save the workbook as an Excel file
            workbook.Save(excelPath, SaveFormat.Xlsx);

            Console.WriteLine("CSV file successfully converted to Excel.");
        }
    }
}