C# String 字串處理

1. C# String
   1. 字串插值 (String Interpolation) (C#6)
   2. 逐字識別項
   3. 字串操作 - 數字自動補零 (Padding String with 0)

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筆記 C# 字串處理的相關知識。

C# String

字串插值 (String Interpolation) (C#6)

string name = "Mark";
var date = DateTime.Now;

// Composite formatting:
Console.WriteLine("Hello, {0}! Today is {1}, it's {2:HH:mm} now.", name, date.DayOfWeek, date);
// String interpolation:
Console.WriteLine($"Hello, {name}! Today is {date.DayOfWeek}, it's {date:HH:mm} now.");

MSDN - string interpolation

逐字識別項

可以讓 Escape Char 不發揮作用。

var normalString = "Hello\r\nWorld";
// Hello
// World

var verbatimString = @"Hello\r\nWorld";
// Hello\r\nWorld

字串操作 - 數字自動補零 (Padding String with 0)

var number = 5;
number.toString().PadLeft(2, '0');
// 05
var paragraph = "abc";
number.toString().PadLeft(10);
// '       abc'

MSDN - PadLeft