decimal.TryParse returns false

Question

The input string in textbox is, say, $10.00 . I call

decimal result;
var a = decimal.TryParse(text, NumberStyles.AllowCurrencySymbol, cultureInfo, out result);

cultureInfo is known (en-US). Why does decimal.tryParse returns false?

Thank you.

An external resource from MS that explains how to parse various formats including your sample. http://msdn.microsoft.com/en-us/library/9zbda557.aspx — CSharpConductor, Jun 03 '13 at 13:43
"AllowCurrencySymbol" as you've written it means allow **only** a currency symbol. — Eric Lippert, Jun 03 '13 at 13:43

score 10 · Accepted Answer · answered Jun 03 '13 at 13:41

The problem is you've allowed the currency symbol itself, but you've omitted other properties that are required to parse it correctly (decimal point, for example.) What you really want is NumberStyles.Currency:

decimal.TryParse("$10.00", NumberStyles.Currency, cultureInfo, out result);

score 2 · Answer 2 · answered Jun 03 '13 at 13:40

2

Try this, you need to include NumberStyles.Number in the bitwise combination of values for the style argument:

decimal result;
var a = decimal.TryParse(text, NumberStyles.Number | NumberStyles.AllowCurrencySymbol, cultureInfo, out result);

answered Jun 03 '13 at 13:40

greg84

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score 1 · Answer 3 · answered Jun 03 '13 at 13:44

You forgot to allow the decimal point, too:

decimal result;
var enUS = new System.Globalization.CultureInfo("en-US");
var a = decimal.TryParse("$10.00", System.Globalization.NumberStyles.AllowCurrencySymbol | System.Globalization.NumberStyles.AllowDecimalPoint , enUS, out result);

Console.WriteLine(enUS);
Console.WriteLine(a);
Console.WriteLine(result);

decimal.TryParse returns false

3 Answers3