Sentiment analysis using VADER with C#
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VaderSharp Another private property set Jun 22, 2017
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VaderSharp. The best sentiment analysis tool. In C#.

"VADER (Valence Aware Dictionary and sEntiment Reasoner) is a lexicon and rule-based sentiment analysis tool that is specifically attuned to sentiments expressed in social media."

Previously VADER was only available in python ( I wanted to use it in C# so ported it over.

Getting Started

VaderSharp supports:

  • .NET Core
  • .NET Framework 3.5 and above
  • Mono & Xamarin
  • UWP

To install VaderSharp, run the following command in the Package Manager Console:

Install-Package CodingUpAStorm.VaderSharp


Import the package at the top of the page:

using VaderSharp;

Then just initialize an instance of SentimentIntensityAnalyzer and call it's PolarityScores method:

SentimentIntensityAnalyzer analyzer = new SentimentIntensityAnalyzer();

var results = analyzer.PolarityScores("Wow, this package is amazingly easy to use");

Console.WriteLine("Positive score: " + results.Positive);
Console.WriteLine("Negative score: " + results.Negative);
Console.WriteLine("Neutral score: " + results.Neutral);
Console.WriteLine("Compound score: " + results.Compound);