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New Requirement Recently, a new requirement emerged where previously downloadable PDF and Excel files now need to support inline preview functionality instead of direct downloads. The frontend team encountered challenges when reviewing existing code. Previously, both download and preview endpoints returned binary streams direct to the frontend. ...

In .NET enterprise development, converting Excel files to DataTable objects is a common requirement. DataTable serves as a versatile in-memory data structure for subsequent validation, persistance, and presentation operations. Install the Free Spire.XLS for .NET library via NuGet Package Manager: Right-click project → Manage NuGet Packages Sea ...

Reading Excel Files Use pandas' read_excel() function to load data from Excel files. Excel workbooks often contain multiple sheets, so reading involves specifying both the file path and the target sheet. While you can load multiple sheets simultaneously, this typically returns a dictionary of DataFrames, which complicates subsequent operations. ...

When maintaining technical documentation or managing datasets, converting tabular data from Excel into Markdown format is a frequent requirement. This allows for seamless integration into static site generators, wikis, or project repositories. Automating this process with C# provides a robust solution for handling recurring conversion tasks. Th ...

Exporting data to Excel is a common business requirement. In most cases, simple formatting is sufficient, so there are several viable solutions available. Some implementations are quite straightforward. I. Available Solutions Currently, we can consider several categories of solutions: Solutions provided by word processing enterprises -- This ...

When generating Excel reports programmatically, ensuring consistent and professional print formatting is often overlooked—yet critical for enterprise-grade outputs. This guide demonstrates how to precisely control page layout, margins, scaling, and print regions in C# using the Free Spire.XLS library, enabling fully automated, repeatable docume ...

In data processing workflows, Excel files frequently accumulate unnecessary empty rows and columns due to data modification or extraction. This guide demonstrates how to utilize the Free Spire.XLS for Java library to identify and remove these blank elements programmatically, ensuring cleaner datasets for analysis. Dependency Configuration To in ...

This guide demonstrates how to programmatically add and retreive Excel formulas within a Java application using the Spire.XLS library. Project Setup Before you begin, download the Free Spire.XLS for Java package. After extraction, add the Spire.Xls.jar file from the lib folder to your project's build path. Alternatively, you can entegrate it vi ...

In many business application developments, there's often a need to implement Excel import and export functionality. This article provides a comprehensive guide on how to accomplish this using Apache POI, a popular Java library for working with Microsoft Office documents. Apache POI Overview Microsoft Excel has long been a preferred tool for dat ...

To handle Excel files in Node.js, install the node-xlsx package using npm. npm install node-xlsx The node-xlsx library proivdes two primary functions: parse() for reading Excel files and build() for creating them. The parse() method accepts a file path and returns an array of objects representing the workbook's sheets. To convert an Excel file ...