.NET Reusable Components

NReco PivotData Toolkit

.NET SDK for data aggregation and advanced pivot table reports generation. Implements in-memory data cube, OLAP-operations, pivot table HTML rendering and exports. Includes web pivot table builder (js frontend). Can be used for creating embedded BI dashboards.

PivotData Microservice

Microservice NET8 app (web API) for embedded analytics & reporting functionality. JSON-configurable data connectors for SQL/MongoDB/ElasticSearch/SSAS data sources. Includes web pivot tables & charts builder (js frontend example). Reports may be exported to HTML, JSON, CSV, Excel, PDF, Image.

Javascript Pivot Table

Advanced features for pivot.js jQuery plugin: sort by values/labels, fixed headers, pivot table data for exports, drill-down event. ASP.NET MVC Core integration (optional): UI builder for report SQL query, exports to CSV/Excel/PDF.

Javascript Query Builder

NReco Query Builder is a javascript widget for building complex data filters. ASP.NET MVC Core integration provides backend that translates UI widget state into SQL query conditions.

HTML-to-PDF Generator

WkHtmlToPdf .NET wrapper that performs HTML-to-PDF conversion. Supports page header/footer, page numbering etc.

HTML-to-Image Generator

WkHtmlToImage .NET wrapper that performs HTML-to-image conversion (jpg/png). Can be used for getting web page thumbnail.

PDF-to-Image Renderer

.NET wrapper for poppler tools that converts PDF pages to images or text (ASP.NET PDF viewer, PDF thumbnails, extract PDF text/images).

VideoConverter | VideoInfo

FFMpeg .NET wrapper for converting media files (video, audio). Can extract video thumbnails, transcode/decode live media streams, encode video from images etc.

Fast CSV parser

Lightweight and ultra-fast .NET CSV parser: implements CSV stream reader and writer. Memory efficient: uses only one single circular buffe (no allocations in heap). Suitable for CSVs of any size (many GBs).

GraphQL API for SQL DB

Simplifies creation of GraphQL API for existing SQL database: engine that translates GraphQL queries to SQL, can generate GraphQL schema by database schema.

Natural Language Query Parser

NLQuery performs rule-based named entity recognition (NER) Can be used for natural language interfaces in .NET applications (smart data list filters, search-driven reporting etc).

Recommendation Engine

Fast collaborative filtering engine (C# port of Apache Mahout CF) that takes users' behaviour and from that tries to find items users might like.

NReco Data Access library

High-performance schema-less data access library for modern .NET apps. Can be used with any ADO.NET provider.

Lambda Expressions Evaluator

Runtime parser for user-entered lambda expressions (formulas, method calls, properties/fields/arrays accessors). LambdaParser builds dynamic LINQ expression tree and compiles it to the lambda delegate. Types are resolved at run-time like in dynamic languages.