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IronXL - Excel Library for C# .NET
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IronXL - Excel Library for C# .NET
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PM >Install-Package IronXL.Excel

  • Get Started
  • Code Examples
    • How to Read an Excel File in C#
    • Using C# to Create Excel Files in .NET
    • Use C# to Open & Write an Excel File
    • Compatibility
      • License Keys
      • Setup on macOS
      • Setup on AWS
      • Setup on Azure
      • Setup on Docker
      • Setup on Linux
      • Read Excel Files in Blazor
      • Work with Excel in C# without Interop
      • Work with VB.NET Excel Files
      • Work with Excel on .NET MAUI
    • Workbooks
      • Create Spreadsheets
      • Load Spreadsheets
      • Save or Export Formats
      • Create Excel Documents in C#
      • Create an XLSX File
      • Parse Excel Files in C#
      • Read Excel File Example
      • Export to Excel in C#
      • Read XLSX File C#
      • Read a CSV in C#
      • Read Excel Files in ASP.NET Web Apps
      • Write CSV in .NET
      • Open Excel Worksheets in C#
      • Convert a Data Table to CSV
      • Convert XLSX to CSV, JSON, XML
      • Convert Spreadsheet File Types
      • Import and export as DataSet
      • Edit Workbook Metadata
      • Encrypt Workbook with Password
      • Manage Worksheet
    • Worksheets
      • Edit Formulas
      • Select Range
      • Create and Edit Charts
      • Freeze Panes
      • Encrypt Worksheet with Password
      • Add Rows and Columns
      • Autosize Rows and Columns
      • Add, Extract, and Remove Images
      • Group and Ungroup
      • Create Excel Charts in C#
    • Cell Ranges
      • Write Excel Values in .NET
      • Import Excel Data in C#
      • Sort Cell Range
      • Trim Cell Range
      • Merge and Unmerge Cells
      • Clear Cell
      • Copy Cell
      • Set Hyperlink
      • Conditional Formatting
      • Math Functions
      • Cell Font and Size
      • Set Cell Data Formats
      • Cell Border & Alignment
      • Background Pattern & Color
      • Edit Excel Files in C#
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Free for development from NuGet

Install with NuGet nuget.org/packages/IronXL.Excel

PM > Install-Package IronXL.Excel

  1. IronXL
  2. Troubleshooting
  3. File Size Limits

File Size Limits

Are file sizes limited in IronXL?

There is no file size or row/column limit in IronXL.

If you are seeing an error message regarding 65,535 rows this would suggest you are using an 2003-version XLS file.

The newer 2007-2010 XLS and XLSX version files have much higher limits.

Please see: https://support.office.com/en-us/article/excel-specifications-and-limits-1672b34d-7043-467e-8e27-269d656771c3#ID0EBABAAA=Office_2010

On This Page

  • Are file sizes limited in IronXL?

Ready to get started? Version: 2023.12 just released

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C# NuGet Library for PDF
Install with NuGet
Version: 2023.12
Install-Package IronXL.Excel
nuget.org/packages/IronXL.Excel/
  1. In Solution Explorer, right-click References, Manage NuGet Packages
  2. Select Browse and search "IronXL"
  3. Select the package and install
C# PDF DLL
Download DLL
Version: 2023.12
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Manually install into your project
  1. Download and unzip IronXL to a location such as ~/Libs within your Solution directory
  2. In Visual Studio Solution Explorer, right click References. Select Browse, "IronXL.dll"
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Have it up and running in minutes.

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Get started for FREE

No credit card required

Test in a live environment

Test in production without watermarks.
Works wherever you need it to.

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Fully-functional product

Get 30 days of fully functional product.
Have it up and running in minutes.

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24/5 technical support

Full access to our support engineering team during your product trial

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PM > Install-Package IronXL.Excel

IronXL for .NET

The Excel API you need, without the Office Interop hassle.

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Documentation

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  • How-Tos
  • Features
  • Blog
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Tutorials

  • Get Started
  • Read an Excel File in C#
  • Create Excel Files in .NET

Licensing

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  • EULA

Try IronXL Free

  • Download on NuGet

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When you need your PDF to look like HTML, fast.

Tesseract 5 OCR in the languages you need, We support 127+.

The Excel API you need, without the Office Interop hassle.

When you need to zip and unzip archives, fast.

When you need to read, write, and style QR codes, fast.

When you need to read, write, and style Barcodes, fast.

The power you need to scrape & output clean, structured data.

The complete .NET Suite for your office.

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