A string data type is one of the fundamental data types, along with numeric (int, long, double) and logical (Boolean) ones. You can hardly imagine at least one useful program that does not utilize this type.
On the .NET platform, the string type is presented as an immutable String class. In addition, it is strongly integrated into the CLR environment and is also supported by the C# compiler.
This article is devoted to concatenation – an operation performed on strings as often as the addition operation on numerals. You may think: “What is there to say?”, after all, we all know about string operator “+”, but as it turned out, it has its own quirks.