String Literals

A string literal in C# represents a sequence of Unicode characters.  There are two main types of string literals in C#–regular string literals and verbatim string literals.  Verbatim string literals allow including special characters in a string directly, rather than having to specify them using an escape sequence.  All string literals are of type string.
Here are some examples of string literals:
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string s1 = "Hi";
string s2 = @"Hi";       // Verbatim string literal--same thing
string s3 = "C:\\Dir";   // C:\Dir  (escape seq for backslash)
string s4 = @"C:\Dir";   // No escape seq required
string s5 = "\x48\x69";  // Hi  (hex codes for each character)
string s6 = "\x20AC 1.99";  // € 1.99
string s7 = "€ 1.99";    // Unicode directly in string
 
// UTF-32 characters using surrogate pairs
string s8 = "\U00020213";      // U+20213 (UTF-32)
string s9 = "\ud840\ude13";    // Equiv surrogate pair
string s10 = "𠈓";             // Same character
Note:


  • \u is followed by 4-byte UTF16 character code
  • \U is followed by 8-byte UTF32 character code, which is then converted to equivalent surrogate pair
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