Replace com does not work

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I’m trying to make a Replace() but it doesn’t work. I need to change \ for \\.

"\r\n".Replace(@"\", "\\");

he just returns me : "\r\n" and not "\\r\\n".

c# .net string replace

1 answer

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First of all, I don’t think you need to do this, but I’m just speculating. I think there’s another problem that’s giving you a wrong solution.

It’s not working because it’s changing something for itself. @"\" is exactly the same thing as "\\".

That’s how it works:

var texto = @"\r\n".Replace(@"\", @"\\");

The @ causes the escape character \ be considered a normal character, among other things. When you use \\ without the @ the backslash is an escape and when you use two backslash means you should consider the bar as normal character.

Do not forget to store the information somewhere (as I did) or immediately use in the expression.

using static System.Console;

public class Program {
    public static void Main() {
        var texto = @"É necessário Cadastrar o(s) seguinte(s) Parâmetro(s):SENHA_FTP\r\n";
        WriteLine(texto.Replace(@"\", @"\\"));
    }
}

Behold working in the ideone. And in the .NET Fiddle. Also put on the Github for future reference.

  • didn’t work out...

  • I’d forgotten a @, now yes.

  • Your example worked, but with my non... text="You need to Register the following(s) Parameter(s):SENHA_FTP r n" text = @text. Replace(@"", @"\");

  • It worked your example, I did what you put in the question. If what you wanted to do was something else, you should have asked the question what you wanted.

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