將文檔從一種格式轉換為另一種格式是Spire.XLS的主要功能之一。這種轉換只不過是加載和保存操作的組合。因此，使用Spire.XLS可以將文檔從任何受支持的加載格式轉換為任何受支持的保存格式。

本文整理了包括在C#中以下文件格式的轉換指南，希望對您有所幫助：

• Excel轉PDF
  
• Excel轉HTML
  
• Excel轉圖像
  
• Excel和CSV互轉
• Excel轉文本
  
• Excel轉xps
  
• PExcel轉.ods
  

>>你可以點擊這里下載Spire.XLS for .NET測試體驗。

（篇幅較長，建議收藏閱讀）

Excel轉PDF

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Spire.Xls;

namespace ToPDF
{
    class Program
    {
        static void Main(string[] args)
        {
            Workbook workbook = new Workbook();
            workbook.LoadFromFile("Sample.xlsx", ExcelVersion.Version2010);
            workbook.SaveToFile("result.pdf", Spire.Xls.FileFormat.PDF);
         }
    }
}

Excel轉HTML

using Spire.Xls;
namespace Xls2Html

{
    class Program
    {
        static void Main(string[] args)
        {
            //load Excel file
            Workbook workbook = new Workbook();
            workbook.LoadFromFile(@"..\..\test.xls");
            
            //convert Excel to HTML
            Worksheet sheet = workbook.Worksheets[0];
            sheet.SaveToHtml("sample.html");

            //Preview HTML
            System.Diagnostics.Process.Start("sample.html");
        }
    }
}

Excel轉圖像

using Spire.Xls;
namespace Xls2Image

{
    class Program
    {
        static void Main(string[] args)
        {
            Workbook workbook = new Workbook();
            workbook.LoadFromFile(@"..\..\test.xls");
            Worksheet sheet = workbook.Worksheets[0];
            sheet.SaveToImage("sample.jpg");
        }
    }
}

Excel轉CSV

using Spire.Xls;
namespace xls2csv
{
    class Program
    {
        static void Main(string[] args)
        {
            Workbook workbook = new Workbook();
            workbook.LoadFromFile(@"..\ExceltoCSV.xls");
            Worksheet sheet = workbook.Worksheets[0];
            sheet.SaveToFile("sample.csv", ",", Encoding.UTF8);
        }
    }
}

CSV轉Excel

using Spire.Xls;

namespace csvtoxls
{
    class Program
    {
        static void Main(string[] args)
        {
         Workbook workbook = new Workbook();
         workbook.LoadFromFile(@"D:\michelle\my file\csv2xls.csv", ",", 1, 1);
         Worksheet sheet = workbook.Worksheets[0];
         sheet.Name = "csv to excel";
         //set the backgroundcolor=LightBlue of Range["A1:E1"]
         sheet.Range["A1:E1"].Style.Color = Color.Chocolate;
         //set the backgroundcolor=LightBlue of Range["A2:E6"]
         sheet.Range["A2:E6"].Style.Color = Color.SpringGreen;
         //set the backgroundcolor=Silver of Range["A7:E12"]
         sheet.Range["A7:E12"].Style.Color = Color.SkyBlue;
         //set the backgroundcolor=Silver of Range["A13:E19"]
         sheet.Range["A13:E19"].Style.Color = Color.Yellow;
         workbook.SaveToFile("result.xls", ExcelVersion.Version97to2003);        
        }
    }
}

Excel轉文本

using Spire.Xls;
namespace Excel_to_Txt
{
    class Program
    {
        static void Main(string[] args)
        {
            Workbook workbook = new Workbook();
            workbook.LoadFromFile(@"..\ExceltoTxt.xls");
            Worksheet sheet = workbook.Worksheets[0];
            sheet.SaveToFile("ExceltoTxt.txt", " ", Encoding.UTF8);
        }
    }
}

Excel轉XPS

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Spire.Xls;

namespace ExceltoXPS
{
    class Program
    {
        static void Main(string[] args)
        {
            Workbook workbook = new Workbook(); 
            workbook.LoadFromFile("sample.xlsx", ExcelVersion.Version2010);
         
            workbook.SaveToFile("result.xps", Spire.Xls.FileFormat.XPS);
        }
    }
}

Excel轉.ods

using Spire.Xls;

namespace Convert_Excel_to_ODS
{
    class Program
    {
        static void Main(string[] args)
        {
            Workbook workbook = new Workbook();
            workbook.LoadFromFile("Sample.xlsx");
            workbook.SaveToFile("Result.ods",FileFormat.ODS);
        }
    }
}