在IFormatProvider中应用千位分隔符，就像十进制一样

Question

下面的代码适用于小数分隔符，这意味着，对于pt-pt，它呈现“，”和en-us它会“。”

如何使用千位分隔符完成相同的行为？

        decimal dec = Convert.ToDecimal(20000.01);

        IFormatProvider portuguese = new System.Globalization.CultureInfo("pt-pt");
        IFormatProvider english = new System.Globalization.CultureInfo("en-us");

        Console.WriteLine(dec.ToString(portuguese));
        Console.WriteLine(dec.ToString(english));

Answer 1

您需要使用包含千位分隔符的格式字符串。

E.g。一个standard format string：

dec.ToString("N2", portuguese);

或custom format string：

dec.ToString("#,###.00", portuguese);

Answer 2

这无疑是在黑暗中拍摄的。

decimal dec = Convert.ToDecimal(20000.01);

IFormatProvider portuguese = new System.Globalization.CultureInfo("pt-pt");
IFormatProvider english = new System.Globalization.CultureInfo("en-us");

Console.WriteLine(dec.ToString({0:C},portuguese)); //tell it that its currency
Console.WriteLine(dec.ToString(({0:C},english));   //tell it that its currency