How do I format a C# decimal to remove extra following 0's?

Question

I want to format a string as a decimal, but the decimal contains some following zeros after the decimal. How do I format it such that those meaningless 0\'s disappear?

Answer 1

Unlike what everybody suggest to use a G format specifier I would suggest the following to preserve both thousand separator and decimal point while removing extra trailing zeros:

{0:#,#.##}

The result of this format is much better than G in most cases:

String.Format("{0:#,#.##}",25/2.4);
10.42

String.Format("{0:#,#.##}",1000000);
1,000,000

String.Format("{0:#,#.##}",1000000.3600000);
1,000,000.36

And the G specifier can't really handle all the possible combinations:

String.Format("{0:G29}",25/2.4);
10.416666666666668

String.Format("{0:G2}",25/2.4);
10

String.Format("{0:G29}",1000000.3600000);
1000000.36

String.Format("{0:G2}",1000000.3600000);
1E+06