Need help with C#

[Little Bear]

I came across a bit of an issue when I tried to specify an instance, and it thinks i'm trying to do an "escape sequence".

 

 

Here is the line of code:   

                                                                                                                                   The error lies here |    

                                                                                                                                                                  |

                                                                                                                                                                  \/

PerformanceCounter perftemperatureCount = new PerformanceCounter("Thermal Zone Information", "\_TZ.TZ00");

[Mr_KoKa]

"\_TZ.TZ00"

If you aren't about to escape _ character then try  "\\_TZ.TZ00" \ is escape character that tries to escape following character, \\ will be just single backslash in result.

[Little Bear]

24 minutes ago, Mr_KoKa said:

"\_TZ.TZ00"

If you aren't about to escape _ character then try  "\\_TZ.TZ00" \ is escape character that tries to escape following character, \\ will be just single backslash in result.

Thanks!

[madknight3]

You can also use a verbatim string literal by placing the @ symbol in from of the quoted text.

@"\_etc"

This removes the need to escape characters, except the double quote character which is added like so

@"Example: ""Hi"" they said."

It also allows you to write multiline strings that keep line breaks and spacing intact.

@"Hello
    World"

With C# 6, they introduced interpolated strings which you can also combine with verbatim strings.

Stackoverflow: How do you use verbatim strings with interpolation?

[dchw]

@madknight3 Explained it well.

 

An even more fun (and less known) trick using the "@" sign is that it allows you to use C# keywords as variable names. I never recommend this, but it does work. You can write things like this:

 

void Main()
{
	var @null = "HEY";
	var @if = "WHAT R U DOIN";
	var @object = "PLZ STAHP";
	
	Console.WriteLine($"{@null} {@if} {@object});
}

Once again, don't do this without a very, very good reason. It's just a neat example of how consistent the "@" signifies the idea of doing something verbatim.