Spire.XLS-for-.NET .NET API for Processing Excel Documents

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Spire.XLS for .NET is a professional Excel .NET API that can be used to create, read, write, convert and print Excel files in any type of .NET ( C#, VB.NET, ASP.NET, .NET Core, .NET 5.0, MonoAndroid and Xamarin.iOS) application without installing Microsoft Office.

The API supports both the old Excel 97-2003 format (.xls) and the new Excel 2007, Excel 2010, Excel 2013, Excel 2016 and Excel 2019 (.xlsx, .xlsb, .xlsm), along with Open Office(.ods) format. It features fast and reliably compared with developing your own spreadsheet manipulation solution or using Microsoft Automation.

100% Standalone .NET API

Spire.XLS for .NET is a 100% standalone Excel .NET library without requiring Microsoft Excel or Microsoft Office to be installed on the system.

Freely Operate Excel Files

• Create/Save/Merge/Split/Get Excel files.
• Encrypt/Decrypt Excel files, add/delete digital signature, tracking changes, lock/unlock worksheets.
• Create/Add/Rename/Edit/Delete/Move worksheets.
• Insert/Modify/Remove hyperlinks.
• Add/Remove/Change/Hide/Show comments in Excel.
• Merge/Unmerge Excel cells, freeze/unfreeze Excel panes, insert/delete Excel rows and columns.
• Add/Read/Calculate/Remove Excel formulas.
• Create/Refresh pivot table.
• Apply/Remove conditional format in Excel.
• Add/Set/Change Excel header and footer.

Powerful & High Quality Excel File Conversion

• Convert Excel to PDF/Excel to HTML/Excel to XML/Excel to CSV/Excel to Image/Excel to XPS/Excel to SVG
• Convert CSV to Excel/CSV toPDF/Datatable
• Convert selected range of cells to PDF
• Convert XLS to XLSM and maintain macro
• Convert Excel to OpenDocument Spreadsheet(.ods) format
• Save Excel chart sheet to SVG/Image
• Convert HTML to Excel

Examples

Create an Excel File in C#

using Spire.Xls;
using System.IO;
namespace CreateExcelFiles
{
    class Program
    {

        static void Main(string[] args)
        {
            //A: Dynamically create Excel file and save it to stream
            Workbook wbToStream = new Workbook();
            Worksheet sheet = wbToStream.Worksheets[0];
            sheet.Range["C10"].Text = "The sample demonstrates how to save an Excel workbook to stream.";
            FileStream file_stream = new FileStream("To_stream.xls", FileMode.Create);
            wbToStream.SaveToStream(file_stream);
            file_stream.Close();
            System.Diagnostics.Process.Start("To_stream.xls");

            //B. Load Excel file from stream
            Workbook wbFromStream = new Workbook();
            FileStream fileStream = File.OpenRead("sample.xls");
            fileStream.Seek(0, SeekOrigin.Begin);
            wbFromStream.LoadFromStream(fileStream);
            wbFromStream.SaveToFile("From_stream.xls", ExcelVersion.Version97to2003);
            fileStream.Dispose();
            System.Diagnostics.Process.Start("From_stream.xls");
        }

    }
}

Convert Excel to PDF in C#

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);
         }
    }
}

Convert Excel to Image in C#

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");
        }
    }
}

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