在C＃中以编程方式更改Windows文化

Question

I want to change the windows culture settings programmatically since when using my program I need to parse the dot "." as the decimal number and windows has by default set the ",". So I'm looking for this.

I already tried by changing the current app culture but when parsing data from db it still gets in trouble because it uses windows configuration.

Answer 1

I'll emphasize, do it better.

This can be pretty easily solved, and a quick example:

public static decimal GetInvariantDecimal(string internationDecimalString)
{
    var looksUnAmerican = Regex.IsMatch(internationDecimalString, @"(\d+,\d{2}\b)|(\d+\.\d+,\d{0,2})|(\d+\.\d{3})");
    Console.WriteLine(looksUnAmerican);
    return looksUnAmerican ? 
        Decimal.Parse(internationDecimalString, NumberStyles.Currency, CultureInfo.GetCultureInfo("tr-TR")) :
        Decimal.Parse(internationDecimalString,  CultureInfo.InvariantCulture);
}

public static void Main()
{
    var american = "123.55";
    var international = "234,55";       

    Console.WriteLine(GetInvariantDecimal(american));
    Console.WriteLine(GetInvariantDecimal(international));
}

It will give you a standard decimal for the correct environment, and you would use this every time you work with the string from the database. (of course, it doesn't currently handle something like "1,234.01"...

But output:

123.55
234.55

And one more bit, changing the users machines culture will likely cause all sorts of bugs in who knows what...