String to decimal conversion: dot separation instead of comma

Question

I have a string read from a textbox. It contains a comma for decimal separation.

I have NumberFormatInfo.CurrencyDecimalSeparator set to ,

Answer 1

I had faced the similar issue while using Convert.ToSingle(my_value) If the OS language settings is English 2.5 (example) will be taken as 2.5 If the OS language is German, 2.5 will be treated as 2,5 which is 25 I used the invariantculture IFormat provided and it works. It always treats '.' as '.' instead of ',' irrespective of the system language.

float var = Convert.ToSingle(my_value, System.Globalization.CultureInfo.InvariantCulture);

Answer 2

All this is about cultures. If you have any other culture than "US English" (and also as good manners of development), you should use something like this:

var d = Convert.ToDecimal("1.2345", new CultureInfo("en-US"));
// (or 1,2345 with your local culture, for instance)

(obviously, you should replace the "en-US" with the culture of your number local culture)

the same way, if you want to do ToString()

d.ToString(new CultureInfo("en-US"));

Answer 3

I ended up using this solution.

decimal weeklyWage;
decimal.TryParse(items[2],NumberStyles.Any, new NumberFormatInfo() { NumberDecimalSeparator = "."}, out weeklyWage);

Answer 4

Instead of replace we can force culture like

var x = decimal.Parse("18,285", new NumberFormatInfo() { NumberDecimalSeparator = "," });

it will give output 18.285

Answer 5

Thanks for all reply.

Because I have to write a decimal number in a xml file I have find out the problem. In this discussion I have learned that xml file standard use dot for decimal value and this is culture independent. So my solution is write dot decimal number in a xml file and convert the readed string from the same xml file mystring.Replace(".", ","); Thanks Agat for suggestion to research the problem in xml context and Ε Г И І И О because I didn't know visual studio doesn't respect the culture settings I have in my code.

Answer 6

    usCulture = new CultureInfo("vi-VN");
Thread.CurrentThread.CurrentCulture = usCulture;
Thread.CurrentThread.CurrentUICulture = usCulture;
usCulture = Thread.CurrentThread.CurrentCulture;
dbNumberFormat = usCulture.NumberFormat;
number = decimal.Parse("1.332,23", dbNumberFormat); //123.456.789,00

usCulture = new CultureInfo("en-GB");
Thread.CurrentThread.CurrentCulture = usCulture;
Thread.CurrentThread.CurrentUICulture = usCulture;
usCulture = Thread.CurrentThread.CurrentCulture;
dbNumberFormat = usCulture.NumberFormat;
number = decimal.Parse("1,332.23", dbNumberFormat); //123.456.789,00

/*Decision*/
var usCulture = Thread.CurrentThread.CurrentCulture;
var dbNumberFormat = usCulture.NumberFormat;
decimal number;
decimal.TryParse("1,332.23", dbNumberFormat, out number); //123.456.789,00