C#利用Spire.XLS for .NET将Excel转换为文本(TXT)的代码步骤

Install-Package FreeSpire.XLS

using Spire.Xls;
using System.Text;

class Program
{
    static void Main()
    {
        Workbook workbook = new Workbook();
        workbook.LoadFromFile(@"C:\input.xlsx");  // 支持XLS/XLSX

        int index = 0;
        foreach (Worksheet sheet in workbook.Worksheets)
        {
            string output = $"Sheet{index++}_{sheet.Name}.txt";
            sheet.SaveToFile(output, "\t", Encoding.UTF8);  // Tab分隔，UTF-8编码
        }

        workbook.Dispose();
        Console.WriteLine("转换完成！");
    }
}

static void ConvertWithRange(Worksheet sheet, string output)
{
    try
    {
        StringBuilder sb = new StringBuilder();
        CellRange range = sheet.AllocatedRange;  // 自动检测数据范围

        for (int r = range.Row; r <= range.LastRow; r++)
        {
            for (int c = range.Column; c <= range.LastColumn; c++)
            {
                sb.Append(sheet.Range[r, c].Value?.ToString() ?? "").Append(",");
            }
            sb.AppendLine();
        }
        System.IO.File.WriteAllText(output, sb.ToString(), Encoding.UTF8);
    }
    catch (Exception ex)
    {
        Console.WriteLine($"错误: {ex.Message}");
    }
}