How to convert string into decimal?

Question

I text box i have a value:

1212,12

Additionally my text box have a mask:

MaskType=Numeric
EditMask='n2'

i try to parse it:

var culture = CultureInfo.CreateSpecificCulture("en-US");
var value = decimal.Parse(myTextBox.Text, culture);

but get value=121212 when expected value=1212.12

What can be wrong?

Answer 1

en-US seperates the position after decimal point with a . instead of a ,

try another culture or set myTextBox.Text to 1212.12

Answer 2

You have a missmatching culture:

1212,12

and

en-US

Either use . as a decimal separator (ie 1212.12 ) or a culture which uses , (eg de-DE , de-AT , fr-FR ), but en-US uses . as a decimal separator and , as a thousands separator.

Answer 3

en-US culture have NumberDecimalSeparator as a . not , but it has NumberGroupSeparator as a ,

That's why it thinks your , is NumberGroupSeparator and that's why it parses as 121212 .

As a solution, you can use different IFormatProvider which has , as a NumberDecimalSeparator or you can clone your en-US culture with CultureInfo.Clone method and set it's NumberDecimalSeparator property to , and changing it NumberGroupSeparator property something else.

string s = "1212,12";
var culture = (CultureInfo)CultureInfo.CreateSpecificCulture("en-US").Clone();
culture.NumberFormat.NumberDecimalSeparator = ",";
culture.NumberFormat.NumberGroupSeparator = ".";
decimal value = decimal.Parse(s, culture); // 1212.12

Answer 4

Either change the separator or change the culture:

For en-US culture separator is .

If you want to use separator , use fr-FR culture !

var culture = CultureInfo.CreateSpecificCulture("fr-FR");
var value = decimal.Parse(myTextBox.Text, culture);