Sorry for reactivating this question, but I didn’t find the right answer here.
In formatting numbers you can use 0
as a mandatory place and #
as an optional place.
So:
// 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"
You can also combine 0
with #
.
String.Format("{0:0.0#}", 123.4567) // "123.46"
String.Format("{0:0.0#}", 123.4) // "123.4"
String.Format("{0:0.0#}", 123.0) // "123.0"
For this formating method is always used CurrentCulture
. For some Cultures .
will be changed to ,
.
Answer to original question:
The simpliest solution comes from @Andrew (here). So I personally would use something like this:
var number = 123.46;
String.Format(number % 1 == 0 ? "{0:0}" : "{0:0.00}", number)