yahoofinancefor.net

YahooFinanceFor.NET

This is a library to help .NET developers to collect financial market information from Yahoo Finance (unofficial api). The current version 2.0.0 has been modified and improved:

• General structure of the library;
• Correction of bugs in the frequency of quotations data;
• Implemented asset profile information collection;

Features

--

• Asset quote data collection (completed);
• Profile Assets (completed);
• Equity data collection (in development);

How to use

--

To use the library you must add it to your project via nuget click here. If you want to collect data from the last trading day of an asset, you can do it according to the example below:

using YahooFinance.NET;
		
class Program
{
	static void Main(string[] args)
	{
		string symbol = "AAPL";
		var yf = new YahooFinance();			
		var quotes = yf.Quotes.GetQuotationDaily(symbol);
				
		foreach(var quote in quotes)
		{
			Console.WriteLine($"--> Data:{quote.Date}");
			Console.WriteLine($"Open:{quote.Open}");
			Console.WriteLine($"High:{quote.High}");
			Console.WriteLine($"Low:{quote.Low}");
			Console.WriteLine($"Close:{quote.Close}");
			Console.WriteLine($"Volume:{quote.Volume}","\n");
		}
	}
}			

For other predefined periods you can follow the same concept. If you wanted a more personalized period, you could do:

using YahooFinance.NET;
		
class Program
{
	static void Main(string[] args)
	{
		string symbol = "AAPL";
		DataTime start = Convert.ToDecimal("02/03/2016").Date;
		DataTime end = Convert.ToDecimal("28/07/2017").Date;
		var yf = new YahooFinance();			
		var quotes = yf.Quotes.GetQuotationCustom(symbol, start, end);
	}
	// Return: List quote data
}

This will return a list of data. You will need to implement a class to map the information and use it as your project needs. You can specify a frequency for returning the data set. By default, data is returned on a daily basis. You can change this output by entering the Weekly or Monthly options.

using YahooFinance.NET;
		
class Program
{
	static void Main(string[] args)
	{
		string symbol = "AAPL";
		DataTime start = Convert.ToDecimal("02/03/2016").Date;
		DataTime end = Convert.ToDecimal("28/07/2017").Date;
		var yf = new YahooFinance();			
		var quotes = yf.Quotes.GetQuotationCustom(symbol, start, end, DataFrequency.Monthly);
	}
	// Return: List quote data
}

If you have any questions, suggestions or criticisms, please contact us at [e-mail] or open an issue on github.