What is the difference between string and stringbuilder in net

Password recovery. Java vs. How to Get appSettings Value from Web. How to Get ConnectionString from Web. Difference between appSettings and connectionStrings in Web. Net Array List. Net SQL. Home Asp. A string instance is immutable. Immutable means once we create a string object we cannot modify the value of the string Object in the memory.

Any operation that appears to modify the string, it will discard the old value and it will create new instance in memory to hold the new value. The System. StringBuilder is class that represents a mutable string. This class provides some useful methods that make the user able to manage the String wrapped by the StringBuilder.

Notice that all the manipulations are made on the same StringBuilder instance. Microsoft encourages the use of StringBuilder because it is more effective in terms of memory usage. So there might be performance problem where we use concatenations in loops as a lot of new objects are created each time.

You can use the Clone method if you want to iterate through strings along with the string builder It returns an object so you can convert to a string using the ToString method Please refer to Difference between string and StringBuilder in C?

A String is an immutable type. This means that whenever you start concatenating strings with each other you're creating new strings each time. If you do so many times you end up with a lot of heap overhead and the risk of running out of memory. A StringBuilder instance is used to be able to append strings to the same instance, creating a string when you call the ToString method on it.

Due to the overhead of instantiating a StringBuilder object it's said by Microsoft that it's useful to use when you have more than string concatenations. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 11 years, 5 months ago. Active 11 days ago. Viewed k times. What is the difference between string and StringBuilder? Also, what would be some examples for understanding? Peter Mortensen 29k 21 21 gold badges 97 97 silver badges bronze badges. And see also: stackoverflow. George: The first other question is actually fairly narrow and it even starts with "I already know the difference" — something this question specifically asks.

George: I can't believe that didn't come up in the Related sidebar. Johannes: That is better. I agree that this isn't exactly the same as any of the other linked questions, but that could just be because this one is a bit vague. Show 1 more comment. Active Oldest Votes. Append i ; sb. Joey Joey k 80 80 gold badges silver badges bronze badges. Previous StringBuilder in C. Next C Tuple. Recommended Articles. Article Contributed By :. Easy Normal Medium Hard Expert.

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