.Net framework uses UTF-16 to store strings and characters.
In UTF-16 characters occupy one or two 16 bits storage, while char type in C# only uses one 16 bits.
Two-16-bits characters are called surrogates.
The following code shows how to check if a char is a surrogate.
using System;
using System.Text;
class Sample
{
public static void Main()
{
char ch = 'a';
Console.WriteLine(char.IsSurrogate(ch));
}
}
The output:
False