use of @ symbol in c#

The @ symbol serves 2 purposes in C#:

The first is that it allows you to use a reserved keyowrd as a variable like this:

int @int = 15;

The second option lets you specify a string without having to excape any characters. For instance the '\' character is an escape character so typically you would need to do this:

var myString = "c:\\myfolder\\myfile.txt"

alternatively you can do this:

var myString = @"c:\myFolder\myfile.txt"