System.String ... System.String class. String objects are immutable (i.e. they cannot be changed after they have been created) whereas StringBuilder is mutable(i.e. they can be changed after they have ...

Two popular classes ... string is an immutable data type in C#, when you combine two or more strings, a new string is produced. However, whereas a string is an immutable type in C#, StringBuilder ...

Take advantage of best practices for using StringBuilder to reduce memory allocations and improve the performance of your string operations ... use an internal class in C# within the same assembly ...