Verbatim String Literals

An identifier with an @ prefix is called a verbatim identifier.

The prefix "@" enables the use of keywords as identifiers, which is useful when interfacing with other programming languages.

Example 1:

public ArrayList @params {
get { return this.paramsField; }
set { this.paramsField = value; }
}

params is a C# keyword and cannot be used as a identifier unless you prefix it with the "@" symbol.

Example 2:

The problem in C# - Strings allow escape sequences.

string a = "Here's a tab:\t";

This means you must type double back slash "\\t" if you want the back slash to be shown in the string and not used as a horizontal-tab escape sequence.

Simply type

string a = @"Here's a tab:\t";

The string will not interpret the  "\" character as an escape sequence.