Add support to both EPPlus and ClosedXML libraries#3
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mnieto
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May 9, 2026
mnieto
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- Extract common code to a Core project
- Add ClosedXML support.
- Maintain EPPLus support.
- Reorganize the solution folders to keep tests and libraries separately.
…ix missing functionality in IExcelWritter
- Added IConfigurationBuilder<T> and IMultiHeaderReport<T> to Kevull.MultiHeader.Core, enabling a library-agnostic, extensible API for report configuration and generation. - Refactored EPPLus implementation to use these interfaces. - Enhanced CellFormat with a Merge method and centralized style mapping logic. - Added a TestCommon project with sample data
Introduces a new ClosedXML implementation for the MultiHeader library, including ClosedXmlExcelWriter, ConfigurationBuilder, and MultiHeaderReport classes. Adds a comprehensive test suite in Kevull.MultiHeader.ClosedXml.Tests, mirroring the EPPlus tests to ensure behavior parity. Updates project files for internal visibility, refactors namespaces for consistency, and documents the implementation approach. This enables MultiHeader to support both EPPlus and ClosedXML backends with consistent APIs and test coverage.
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