EPPlus 5 is a robust and versatile .NET library designed for creating, reading, and manipulating Excel spreadsheets without requiring Microsoft Excel to be installed. It supports both .NET Framework and .NET Core, making it suitable for a wide range of applications. EPPlus 5 introduces significant enhancements over its predecessors, including improved chart and drawing functionalities, theme support, and asynchronous I/O operations. With its comprehensive feature set, EPPlus 5 empowers developers to efficiently manage spreadsheet data within their .NET applications. Key Features and Functionality: - Enhanced Chart and Drawing Capabilities: EPPlus 5 offers extensive improvements in chart creation and styling, supporting all Excel 2019 chart types, including stock charts, sunburst, treemap, histogram, and more. It also provides advanced drawing functionalities with support for various effects and 3D styling. - Theme Support: Developers can create and modify theme properties, as well as load and apply theme files (.thmx, allowing for consistent and professional spreadsheet designs. - Asynchronous I/O Operations: The library introduces async/await support for I/O operations, enhancing performance and responsiveness in applications that handle large datasets. - Formula Calculation Engine: EPPlus 5 includes a powerful formula calculation engine that supports dynamic and legacy array formulas, implicit intersection, and over 270 new functions since EPPlus 4. - Pivot Table Enhancements: The library provides advanced pivot table features, including filters, calculated fields, shared caches, and slicers, enabling dynamic data analysis and reporting. - Improved Image Handling: EPPlus 5 supports new image formats such as SVG, ICO, and WebP, and has removed dependencies on System.Drawing.Common/libgdiplus, ensuring seamless operation across different platforms. Primary Value and User Solutions: EPPlus 5 addresses the need for a reliable and feature-rich library to manage Excel spreadsheets within .NET applications without the overhead of Microsoft Excel. It simplifies the process of generating, reading, and modifying Excel files, making it ideal for applications that require reporting, data analysis, and data exchange functionalities. By offering a comprehensive set of tools and supporting the latest Excel features, EPPlus 5 enables developers to create sophisticated spreadsheet solutions efficiently.