How can I use string.Format() to truncate instead of round?

Question

I would like to apply string.Format() in such a way that it performs truncation instead of rounding. For example

string.Format("##", 46.5); // output is 47, but I want 46
string.Format("##.#", 46.55); // output is 46.6, but I want 46.5

http://stackoverflow.com/questions/164926/c-sharp-how-do-i-round-a-decimal-value-to-2-decimal-places-for-output-on-a-pa — Niventh, Mar 29 '13 at 15:31

score 0 · Answer 1 · edited Mar 29 '13 at 15:31

0

Use Math.Truncate to truncate before formatting for output

edited Mar 29 '13 at 15:31

Iswanto San

answered Mar 29 '13 at 15:29

Michael Ross

That's "Truncate" (with an n), btw – Reed Copsey Mar 29 '13 at 15:30
That's not what he wants 46.55 to be 46.5, I think. Math.Truncate would return 46. – Colin DeClue Mar 29 '13 at 15:36
var v = Math.Truncate(46.5); v.ToString("##.#") // gives 46 – realnero Mar 29 '13 at 15:37
1

This answer does not use a format strings to get the desired result. – lincolnk Mar 22 '14 at 00:24

1 Answers1