Using XLQ to get Yahoo Finance Bid and Ask in DotNet CSharp
This is a very good tool to retrieve data so search it on my youtube.com/quantlabs channel. You can retrieve multiple data sources including Yahoo Finance. Also, the coding is much simpler and cleaner than something like TWSLink or the Interactive Brokers API.
The Visual Studio solution package with source code is availabe to my Quant Elite members
HIgher resolution version but you still need to make full screen.
Bad low resolution:
NOTE I now post my TRADING ALERTS into my personal FACEBOOK ACCOUNT and TWITTER. Don't worry as I don't post stupid cat videos or what I eat!