[i have this kind of LCD 1602 (I2C - 0x27)]
(Yellow IIC/I2C/TWI/SPI Serial Interface 1602 16X2 Character LCD Module Display | eBay)
did is enought to use
[Seed Grove Starter Kit - LCD RGB BackLight.cs Driver]
(https://github.com/ghi-electronics/TinyCLR-Accessories/blob/master/SeeedGroveStarterKit/LcdRgbBacklight.cs)
or need to modify it (or rewrite other ones)