Math.Round（yourNumber，1）
 

第二个参数是小数舍入到的数目。在你的情况，你要1个小数位作为最终结果。

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!

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.