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Extract Text from XLS in C# using .NET REST API

Excel XLS files are a staple for storing structured data across business, finance, and analytics workflows. When you need to programmatically read or analyze spreadsheet content, fast and reliable text extraction is essential. In this guide we demonstrate how to extract text from XLS files in .NET applications using the lightweight, high‑performance .NET REST API. Learn how to automate Excel file parsing in C# with minimal code, delivering cross‑platform, dependable text extraction.

Steps to Extract Text from XLS in C# .NET

  1. Install GroupDocs.Parser Cloud SDK for .NET from NuGet
  2. Configure your API credentials through the Configuration class
  3. Create a ParseApi instance to handle XLS text parsing
  4. Specify your input XLS file with FileInfo and define TextOptions for extraction
  5. Send the text extraction request and execute it using the Text method
  6. Save the extracted data to a text file

The outlined steps enable developers to avoid manual data extraction from spreadsheets, which is both tedious and prone to errors. By integrating the Cloud REST API, you can simplify data parsing workflows, allowing your C# .NET applications to quickly extract plain text from XLS sheets while preserving accuracy and structure. With processing happening in the cloud, developers no longer need to manage local installations. Instead, you can focus on supercharging your apps with useful features on a platform of your choice.

Code to Extract Text from XLS in C# .NET

With the GroupDocs.Parser Cloud .NET SDK, handling Excel spreadsheets in your .NET applications is a breeze. The SDK lets developers extract text from XLS files in C#, VB.NET, and ASP.NET for data analytics, reporting automation, and content indexing effortlessly. Leveraging the .NET REST API streamlines integration, enhances scalability, and eliminates the need for manual parsing. As a result, you can quickly create high‑performance spreadsheet processing solutions in .NET.

To dive deeper into other parsing capabilities, explore our guide on Extracting Text from DOC Files Using the .NET REST API.

Updated on 21 May 2026