C# - Math.Round

Question

I am trying to understand how to round to the nearest tenths position with C#. For instance, I have a value that is of type double. This double is currently set to 10.75. However, I need to round and then truncate everything past the tenths position. In this case, I am seeking a value of 10.8. How do I round to the tenths position in C#?

Thank you!

Answer 1

Math.Round(yourNumber, 1)

The second parameter is number of decimal places to round to. In your case you want 1 decimal place as an end result.

Answer 2

You simply need to use the overload of Math.Round that takes the decimals parameter.

Math.Round(10.75, 1) // returns 10.8

Just for comparison:

Math.Round(10.75)    // returns 11
Math.Round(10.75, 0) // returns 11
Math.Round(10.75, 2) // returns 10.75