Convert number to string without any formating and using "." as floating point separator

Question

When I do 12345.12345 + "" I get "12345,12345" on my windows machine's IIS Express.

I need to convert the number to the standard representation that can be parsed by other programs, that is XXXX.XXXX - no spaces, no commas. How to do that?

I need the package to work independently no matter what the settings are. I can't control the client's server and I don't want to introduce another possible point of failure. — Tomáš Zato, Oct 27 '17 at 10:59
You can in your code.... read up on formatting and culture settings — BugFinder, Oct 27 '17 at 10:59
You really shouldn't be using the `+` operator on a number and a string. — DavidG, Oct 27 '17 at 11:01
Just use the Convert.ToString with your number and pass the CultureInfo.InvariantCulture as second parameter — Steve, Oct 27 '17 at 11:02

score 3 · Accepted Answer · answered Oct 27 '17 at 11:05

3

The Convert.ToString method has an overload that allows a second parameter to be the CultureInfo used to create the string representation of your number. CultureInfo.InvariantCulture is the static class that contains the . as decimal separator. Putting all together your get

string myString = Convert.ToString(12345.12345, CultureInfo.InvariantCulture);

answered Oct 27 '17 at 11:05

Steve

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Note that it will not work correctly with very large\very small numbers, because for them it will switch to scientific notation – Evk Oct 27 '17 at 11:15

M. Schena · Answer 2 · 2017-10-27T11:35:03.013

1

The functionality of double.ToString() should to the magic:

double number = 1234.1234;
string s = number.ToString(CultureInfo.InvariantCulture);

edited Oct 27 '17 at 11:35

answered Oct 27 '17 at 11:06

M. Schena

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Did you try it with on a computer with a default culture using the comma as decimal separator for floating point numbers? – Steve Oct 27 '17 at 11:07
On an English Windows, maybe. – György Kőszeg Oct 27 '17 at 11:07
2

This method will suffer exactly the same problem that OP is having. – DavidG Oct 27 '17 at 11:10

score 0 · Answer 3 · answered Oct 27 '17 at 11:05

0

This produces the required result:

Convert.ToString(12345.12345, System.Globalization.CultureInfo.InvariantCulture);

answered Oct 27 '17 at 11:05

Tomáš Zato

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score 0 · Answer 4 · answered Oct 27 '17 at 11:24

Maybe you can set the culture for your thread:

string lsOut = (1234.1234 + "").ToString();
Console.WriteLine(lsOut);

System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo(System.Threading.Thread.CurrentThread.CurrentCulture.LCID);
System.Threading.Thread.CurrentThread.CurrentCulture.NumberFormat.NumberDecimalSeparator = ".";
System.Threading.Thread.CurrentThread.CurrentCulture.NumberFormat.NumberGroupSeparator = "";

lsOut = (1234.1234 + "").ToString();
Console.WriteLine(lsOut);

Output is (If de-DE is set first):

1234,1234
1234.1234

Convert number to string without any formating and using "." as floating point separator

4 Answers4