FreeSpire.XLS 14.2.0

Free .NET API for Processing Excel Documents

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Free Spire.XLS for .NET is a Community Edition of Spire.XLS for .NET, which is a totally free Excel API for commercial and personal use. As a standalone .NET library, it enables developers to create, manipulate and convert Excel files on any .NET(C#, VB.NET, ASP.NET, .NET Core) applications without depending on Microsoft Office.

Free Spire.XLS for .NET supports both the old Excel 97-2003 format (.xls) and the new Excel 2007, Excel 2010, Excel 2013, Excel 2016 and Excel 2019 (.xlsx, .xlsm).

Friendly Reminder: Free version is limited to 5 sheets per workbook and 200 rows per sheet. This limitation is enforced during reading or writing XLS files. From Free Spire.XLS v7.8, there is no any limitation when loading and saving .xlsx file format. When converting Excel files to other formats, such as PDF/XPS/Images, you can only get the first 3 pages of PDF/XPS/Images.

100% Standalone .NET API

Free 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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