Why is the length of this string longer than the number of characters in it?

Question

This code:

string a = \"abc\";
string b = \"A         


        

Answer 1

That is because the Length property returns the number of char objects, not the number of unicode characters. In your case, one of the Unicode characters is represented by more than one char object (SurrogatePair).

The Length property returns the number of Char objects in this instance, not the number of Unicode characters. The reason is that a Unicode character might be represented by more than one Char. Use the System.Globalization.StringInfo class to work with each Unicode character instead of each Char.