char (C# Reference)
The char keyword is used to declare an instance of the System.Char structure that the .NET Framework uses to represent a Unicode character. The value of a Char object is a 16-bit numeric (ordinal) value.
Unicode characters are used to represent most of the written languages throughout the world.
.NET Framework type
U+0000 to U+FFFF
Unicode 16-bit character
Constants of the char type can be written as character literals, hexadecimal escape sequence, or Unicode representation. You can also cast the integral character codes. In the following example four char variables are initialized with the same character X:
For more information, see the C# Language Specification. The language specification is the definitive source for C# syntax and usage.