How to format double in C# to such format?

Question

I have problem with formatting double in C#. I want to achieve format like this: 2.0, but I get an exception.

string result = string.Format("{0.0}",  2.0d);

I get Format Exception, Input string was not in a correct format. When I change code to:

string result = string.Format("{0:0.0}",  2.0d);

I get comma, not drop as separator. Is there some way to get 2.0 from string.format without any other functions?

"I get comma, not drop as separator" -- I believe this is due to your culture settings. — Michal Hosala, Aug 28 '14 at 09:25
possible duplicate of: http://stackoverflow.com/questions/4076789/converting-double-to-string-with-n-decimals-dot-as-decimal-separator-and-no-th — Jester, Aug 28 '14 at 09:26
http://msdn.microsoft.com/en-us/library/dwhawy9k(v=vs.110).aspx — James Cross, Aug 28 '14 at 09:27

score 2 · Answer 1 · answered Aug 28 '14 at 09:31

2

You are getting a comma because of your system's locale. If you'd like to always get a ., specify culture invariance:

string result = string.Format(CultureInfo.InvariantCulture, "{0:N1}", 2.0d);

answered Aug 28 '14 at 09:31

Saeb Amini

score 1 · Answer 2 · answered Aug 28 '14 at 09:27

1

Try this instead of using String.Format():

var param = 2.0d
string result = param.ToString("N1");

answered Aug 28 '14 at 09:27

toadflakz

score 1 · Accepted Answer · answered Aug 28 '14 at 09:31

1

  string.Format(CultureInfo.InvariantCulture, "{0:0.0}",  2.0d);

answered Aug 28 '14 at 09:31

H H

score 1 · Answer 4 · answered Aug 28 '14 at 09:32

1

Try this, putting the culture that u prefer:

string result = string.Format(new System.Globalization.CultureInfo("en-GB"),"{0:0.0}", 2.0d);

answered Aug 28 '14 at 09:32

Juan

4 Answers4