摘要:String Formate Sample
'Standard Numeric Format Specifiers
"(C) Currency: . . . . . . . . {0:C}" . ($123.00)
"(D) Decimal:. . . . . . . . . {0:D}" . -123
"(E) Scientific: . . . . . . . {1:E}" . -1.234500E+002
"(F) Fixed point:. . . . . . . {1:F}" . -123.45
"(G) General:. . . . . . . . . {0:G}" . -123
"(N) Number: . . . . . . . . . {0:N}" . -123.00
"(P) Percent:. . . . . . . . . {1:P}" . -12,345.00 %
"(R) Round-trip: . . . . . . . {1:R}" . -123.45
"(X) Hexadecimal:. . . . . . . {0:X}" . FFFFFF85
Standard DateTime Format Specifiers
"(d) Short date: . . . . . . . {0:d}" . 6/26/2004
"(D) Long date:. . . . . . . . {0:D}" . Saturday, June 26, 2004
"(t) Short time: . . . . . . . {0:t}" . 8:11 PM
"(T) Long time:. . . . . . . . {0:T}" . 8:11:04 PM
"(f) Full date/short time: . . {0:f}" . Saturday, June 26, 2004 8:11 PM
"(F) Full date/long time:. . . {0:F}" . Saturday, June 26, 2004 8:11:04 PM
"(g) General date/short time:. {0:g}" . 6/26/2004 8:11 PM
"(G) General date/long time: . {0:G}" . 6/26/2004 8:11:04 PM
"(M) Month:. . . . . . . . . . {0:M}" . June 26
"(R) RFC1123:. . . . . . . . . {0:R}" . Sat, 26 Jun 2004 20:11:04 GMT
"(s) Sortable: . . . . . . . . {0:s}" . 2004-06-26T20:11:04
"(u) Universal sortable: . . . {0:u} . 2004-06-26 20:11:04Z (invariant)
"(U) Universal sortable: . . . {0:U}" . Sunday, June 27, 2004 3:11:04 AM
"(Y) Year: . . . . . . . . . . {0:Y}" . June, 2004
Standard Enumeration Format Specifiers
"(G) General:. . . . . . . . . {0:G}" . Green
"(F) Flags:. . . . . . . . . . {0:F} . Green (flags or integer)
"(D) Decimal number: . . . . . {0:D}" . 3
"(X) Hexadecimal:. . . . . . . {0:X}" . 00000003
Digits after decimal point
// just two decimal places
String.Format("{0:0.00}", 123.4567); // "123.46"
String.Format("{0:0.00}", 123.4); // "123.40"
String.Format("{0:0.00}", 123.0); // "123.00"
// max. two decimal places
String.Format("{0:0.##}", 123.4567); // "123.46"
String.Format("{0:0.##}", 123.4); // "123.4"
String.Format("{0:0.##}", 123.0); // "123"
// at least two digits before decimal point
String.Format("{0:00.0}", 123.4567); // "123.5"
String.Format("{0:00.0}", 23.4567); // "23.5"
String.Format("{0:00.0}", 3.4567); // "03.5"
String.Format("{0:00.0}", -3.4567); // "-03.5"
Thousands separator
String.Format("{0:0,0.0}", 12345.67); // "12,345.7"
String.Format("{0:0,0}", 12345.67); // "12,346"
Zero
Following code shows how can be formatted a zero (of double type).
String.Format("{0:0.0}", 0.0); // "0.0"
String.Format("{0:0.#}", 0.0); // "0"
String.Format("{0:#.0}", 0.0); // ".0"
String.Format("{0:#.#}", 0.0); // ""
Align numbers with spaces
String.Format("{0,10:0.0}", 123.4567); // " 123.5"
String.Format("{0,-10:0.0}", 123.4567); // "123.5 "
String.Format("{0,10:0.0}", -123.4567); // " -123.5"
String.Format("{0,-10:0.0}", -123.4567); // "-123.5 "
Custom formatting for negative numbers and zero
String.Format("{0:0.00;minus 0.00;zero}", 123.4567); // "123.46"
String.Format("{0:0.00;minus 0.00;zero}", -123.4567); // "minus 123.46"
String.Format("{0:0.00;minus 0.00;zero}", 0.0); // "zero"
Some funny examples
String.Format("{0:my number is 0.0}", 12.3); // "my number is 12.3"
String.Format("{0:0aaa.bbb0}", 12.3); // "12aaa.bbb3"
var culture = CultureInfo.GetCultureInfo("en-US");
int amount = 20000 / 1000;
var amountString = string.Format(culture, "{0:C}K", amount);
Console.WriteLine(amountString); // $20.00
double amount = 20000;
string formatted = string.Format("${0:0,.0}K", amount);
string foo = yourDateTime.ToUniversalTime()
.ToString("yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'fff'Z'");
TonyHuang
