Leivo 

Use this library for Adafruit light sensor TSL2561. Using is very simple, just call sensor.GetLux().

Use this library for Adafruit light sensor TSL2591. Using is very simple, just call sensor.GetLux().

Use this library for Adafruit I2C Barometric Pressure Temperature sensor MPL115A2. Using is very simple, just call sensor.getPressure() (kPa) and sensor.getTemperature() (C).

Use this library in your .NET Core project to communicate with the sensors. Adafruit light sensor TSL2561. Adafruit I2C Barometric Pressure Temperature sensor MPL115A2.