Regarding string and StringBuilder in c# - Which to use when?

Question

0.00/5 (No votes)

See more:

Quick Question.

I am going through the article for String vs StringBuilder. I have couple of doubts

1.Which is better to use ( String or StringBuilder ) for strings that change constantly. Please explain why ( I think it is String. Correct me if I am wrong )
2. For large strings which is a good option ( I think it is StringBuilder )
3.Is string type optimized to accept changes without much impact ?

Posted 27-Dec-13 18:53pm

Member 10491035

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Peter Leow · Accepted Answer · 2013-12-27T19:00:00

Solution 1

The following article will clear your doubts:
String Vs StringBuilder (C#)[^]

Posted 27-Dec-13 19:00pm

Peter Leow

Comments

Member 10491035 28-Dec-13 1:06am

I went through the article. That clarifies the first question of mine. if you try to do some other manipulation (like removing a part from the string, replacing a part in the string, etc.), then it's better not to use StringBuilder at those places. This is because we are anyway creating new strings. So that means for strings that change constantly it is better to use String instead of StringBuilder.

I couldnt find anything which clarifies my Questions 2 and 3

Peter Leow 28-Dec-13 1:51am

Question 2: I do not think the size of a string matters.
Question 3: A string is immutable: it cannot be changed. A new string is always created for concaternation,replace etc. So there is no question of optimization here.
Ultimately, it all falls back to question 1, to help you with more in-dept understanding, check these out
stringbuilder
performance
string-replace-vs-stringbuilder-replace

Member 10491035 28-Dec-13 12:41pm

StringBuilder is used for strings that change constantly. - False
StringBuilder should be used only with big enough strings - True
String type is optimized to accommodate changes without much impact. --> False ( As we are creating new string everytime for every change i think its not optimized )
Let me know if my understanding is correct

Member 10491035 28-Dec-13 14:26pm

Thank you