File APIs for Word/Excel/PowerPoint/PDF

In enterprise applications, working with Excel files is a common requirement. Whether it’s financial reporting, sales analysis, or data consolidation, merging Excel files is an essential task. Different business scenarios require different merging strategies. Here are some typical Excel merging scenarios: File-level merging:  Combine multiple Excel files into a single workbook. Worksheet-level merging:  Consolidate multiple worksheets into a single sheet. Batch merging:  Merge all Excel files within a folder. Header-aligned merging:  Merge data from files with inconsistent headers into a unified format. Below, we’ll introduce several practical ways to merge Excel files in Java according to these scenarios. Environment Setup and Dependencies Before you start, prepare the following environment: Add the Spire.XLS dependency to your project: <repositories> <repository> <id> com.e-iceblue </id> <name> e-iceblue </nam...

  Comparing Word documents is a common requirement when working with reports, contracts, or any content that undergoes frequent revisions. In C#, you can automate this process to detect changes, highlight differences, and generate a consolidated comparison document. This article walks through several ways to compare Word documents using C#. Installing the Required Library Before you start, install the Free Spire.Doc library via NuGet. In your Visual Studio Package Manager Console, run: Install-Package FreeSpire.Doc This library provides APIs to load, edit, and compare Word documents in C#. Once installed, import the following namespaces in your class: using Spire.Doc ; using Spire.Doc.Documents.Comparison ; 1. Basic Word Document Comparison in Csharp The simplest scenario is to compare two documents and mark the differences with tracked changes. This approach uses the  Document.Compare  method to highlight changes under a specified author name. // Create a new Documen...