Decimal Parse is throwing exception after changing NumberFormat Seperator in Global Thread [closed]

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   I have changed Global Application Culture thread for currency number format in (fr-CA) as shown below. 

Thread.CurrentThread.CurrentCulture.NumberFormat.CurrencyPositivePattern = 1;
                                Thread.CurrentThread.CurrentUICulture.NumberFormat.CurrencyNegativePattern = 5;

                            CultureInfo CADCultureref = new CultureInfo("fr-CA");
                            CADCultureref = Thread.CurrentThread.CurrentCulture;
                            NumberFormatInfo CADNumFormatref = new NumberFormatInfo();
                            CADNumFormatref = Thread.CurrentThread.CurrentCulture.NumberFormat;

                            CADNumFormatref.CurrencyGroupSeparator = ".";
                            CADNumFormatref.CurrencyDecimalSeparator = ",";
                            CADCultureref.NumberFormat = CADNumFormatref;
                            Thread.CurrentThread.CurrentCulture = CADCultureref;
                            Thread.CurrentThread.CurrentUICulture = CADCultureref;

Then I try to parsing value from currency as shown below:

Decimal digit = 1000000;
String currency = digit.ToString("C"); //  1.000.000,00$ (fr-CAD)
decimal parseValue = decimal.Parse(currency , System.Globalization.NumberStyles.Currency | System.Globalization.NumberStyles.Number); 

I am getting exception "{Input String is not in correct format}" during parsing value.

Unable to parse due to changing in group seperator and decimal seperator in Numberformatinfo of CurrentThread.

I need to show "," in place of "." and "." in place of ",".

Answer 1

Unclear what your problem is, but it is generally better to explicitly pass culture information/number format into formatting and parsing functions like:

var  numberFormat = new CultureInfo( "en-US", false ).NumberFormat;
numberFormat.CurrencyDecimalSeparator  = ",";
numberFormat.CurrencyGroupSeparator  = ".";
Console.WriteLine(400000.ToString("C", numberFormat)); // Output: $ 4.000,00   
Console.WriteLine(
    decimal.Parse(400000.ToString("C", numberFormat),
           NumberStyles.Currency | NumberStyles.Number, 
           numberFormat));