Formating strings

 

string r = "Percent: " + $"{12.3456:F2}" + "%";
//Percent: 12.34%

decimal value = 123.4567m;
Console.WriteLine(value.ToString("C2"));
//$123.46

double value = 12345.6789;
Console.WriteLine(value.ToString("E10", CultureInfo.InvariantCulture));
//1.2345678900E+004
Console.WriteLine(value.ToString("E",
                  CultureInfo.CreateSpecificCulture("fr-FR")));
//1,234568E+004

double dbv = -12345.6789;
Console.WriteLine(dbv.ToString("N", CultureInfo.InvariantCulture));
// -12,345.68

double number = .2345078;
Console.WriteLine(number.ToString("P", CultureInfo.InvariantCulture));
//23.45 %

CultureInfo ci = new CultureInfo("en-us");
int iv = 255;
Console.WriteLine("X: 0x{0}",
        iv.ToString("X", ci));
//"X: 0xFF"

 

 

Currency

123.456 ("C", en-US)
-> $123.46

123.456 ("C", fr-FR)
-> 123,46 €

123.456 ("C", ja-JP)
-> ¥123

-123.456 ("C3", en-US)
-> ($123.456)

-123.456 ("C3", fr-FR)
-> -123,456 €

-123.456 ("C3", ja-JP)
-> -¥123.456

 

Decimal

1234 ("D")
-> 1234

-1234 ("D6")
-> -001234

 

Exponential (scientific)

1052.0329112756 ("E", en-US)
-> 1.052033E+003

1052.0329112756 ("e", fr-FR)
-> 1,052033e+003

-1052.0329112756 ("e2", en-US)
-> -1.05e+003

-1052.0329112756 ("E2", fr-FR)
-> -1,05E+003

 

Fixed-point

1234.567 ("F", en-US)
-> 1234.57

1234.567 ("F", de-DE)
-> 1234,57

1234 ("F1", en-US)
-> 1234.0

1234 ("F1", de-DE)
-> 1234,0

-1234.56 ("F4", en-US)
-> -1234.5600

-1234.56 ("F4", de-DE)
-> -1234,5600

 

General

-123.456 ("G", en-US)
-> -123.456

-123.456 ("G", sv-SE)
-> -123,456

123.4546 ("G4", en-US)
-> 123.5

123.4546 ("G4", sv-SE)
-> 123,5

-1.234567890e-25 ("G", en-US)
-> -1.23456789E-25

-1.234567890e-25 ("G", sv-SE)

 

https://docs.microsoft.com/en-us/dotnet/standard/base-types/standard-numeric-format-strings