Question

What is the difference between the \ and the / when doing streamwriter?

e.g.

Example 1:

Streamwriter sw = new Streamwriter("/test folder/Output/test.txt");

and

Example 2:

Streamwriter sw = new Streamwriter(@"\test folder\Output\test.txt");

I see you need the @ symbol in the front on the second example too.

Answer 1

There is no difference because .NET recognizes both one and the other in paths.

However, since \ has special meaning when appearing inside a string literal (it is the beginning of an escape sequence) the second example uses verbatim string literal syntax. It could have used \\ in place of \ instead.