c# should decimal to 1 decimal places unless 0 code example
Example: how to convert a number to 2 decimal places in c#
// just two decimal places
String.Format("{0:0.##}", 123.4567); // "123.46"
String.Format("{0:0.##}", 123.4); // "123.4"
String.Format("{0:0.##}", 123.0); // "123"