How Do I Determine The Amount Of Characters In A String In C# coding?

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1.00/5 (2 votes)

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C#

How do i determine the amount of characters in a string in C#?
given no specific character name????

Posted 10-Dec-15 15:08pm

Member 12199804

Updated 10-Dec-15 15:11pm

v2

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PIEBALDconsult 10-Dec-15 21:37pm

You want to count the number of some character that are in the string?
Please use Improve question to add some examples of input and output.

Patrice T 10-Dec-15 22:01pm

C# is full of tools and functionalities, but you need to learn them

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Peter Leow · Answer 1 · 2015-12-10T15:28:00

Solution 1

Check out:
String.Length Property[^]
C# String Length Property[^]

Posted 10-Dec-15 15:28pm

Peter Leow

Updated 10-Dec-15 15:29pm

v3

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Sergey Alexandrovich Kryukov 10-Dec-15 22:19pm

Well, I don't know what to say...
Okay, I voted 4 despite of the pure lie of your statement. This is not entirely your fault. This is the lie from Microsoft, more exactly, unclear documentation. (The property itself is quite useful.) The question is "how to determine amount of characters". System.String.Length return not the number of characters, but something else. Surprised?
Then read Solution 2.

No need to argue that you solution is useful, is all the inquirer needs — I'm ready to agree immediately. It's just not the number of characters, and this fact is easy to check up. My code sample helps to do that easily.

—SA

Sergey Alexandrovich Kryukov · Answer 2 · 2015-12-10T16:02:00

Sorry for too advanced answer to a very simple question, but, for completeness, it's important to mention. Please see my past answer to a different question: how to retrieve the unicode representation for a char?[^].

Among other things, I explain that, unfortunately, String.Length does not really return the number of characters. Surprise? It used to be surprise for me, too. In fact, it returns the number of 16-bit code words. Each such word represent a single character only for a character withing BMP (code point 0xffff or less). See also: https://en.wikipedia.org/wiki/Plane_%28Unicode%29#Basic_Multilingual_Plane[^].

If your string has characters above MBP, each such character is represented by a surrogate pair. I don't want to repeat all that; please read my past answer for detailed information and links. This solution should also explain how to find the "real" number of characters. It also explains what a code point and a character really is.

—SA