c# - Convert string value with '$' into double -

have not found similar question on yet (regarding '$').

i'm following this example, trying expand pre-existing method convert strings doubles. general structure of code looks so:

string str = "$1,000.00"; double output; var success = double.tryparse(     str     , numberstyles.allowleadingwhite         | numberstyles.allowtrailingwhite         | numberstyles.allowleadingsign         | numberstyles.allowdecimalpoint         | numberstyles.allowthousands         | numberstyles.allowexponent         | numberstyles.allowcurrencysymbol     , null // cultureinfo.invariantculture            // or numberformatinfo.invariantinfo break conversion '$'..     , out output     ); console.writeline("'{0}' --> {1}, {2}", str, output, success); 

this works. problem i'm getting dealing '$' character when theiformatprovider parameter of double.tryparse() method set either cultureinfo.invariantculture or numberformatinfo.invariantinfo

(i.e. replace null in method call 1 of commented out variables)

why that? need set parameter 1 of suit internationalization of input strings? initial implemenation of method had parameter set numberformatinfo.invariantinfo breaks conversion of string contains '$'.

why that?

the currency symbol invariant culture ¤, not dollar sign. that's why fails.

however, not need modify conversion code have account - can modify string pass in.

static string replacecurrency(string str)  {     return regex.replace(str, @"\p{sc}", "¤"); } 

this replace currency symbol invariant symbol - parse correctly.

string str = "$1,000.00"; double output; var success = double.tryparse(replacecurrency(str),      numberstyles.currency,      cultureinfo.invariantculture,      out output); console.writeline(output); 

output

1000