c# - How do I round to the nearest 0.5?

Question

I have to display ratings and for that, I need increments as follows:

Input	Rounded
1.0	1
1.1	1
1.2	1
1.3	1.5
1.4	1.5
1.5	1.5
1.6	1.5
1.7	1.5
1.8	2.0
1.9	2.0
2.0	2.0
2.1	2.0

Answer 1

Multiply your rating by 2, then round using Math.Round(rating, MidpointRounding.AwayFromZero), then divide that value by 2.

Math.Round(value * 2, MidpointRounding.AwayFromZero) / 2