This question already has an answer here:
Backslash Escape Sequence displaying both backslashes
(1 answer)
Closed 7 years ago.
I have a string like,
var log = "C:\\folder\\folder2\\this.txt";
For some reason this does not escaped the backslash, it still shows the backslashes in the string as below:
C:\\folder\\folder2\\this.txt
How do I properly escaped the \ character to allow writing to a file at such a location?
You are looking at it in the debugger, There is no double back slash in actual string. The debugger shows it like that.
Do:
Console.WriteLine(log);
and it will display the string without double back slashes in the console.
You are bound to see double backslashes if you're in the IDE, but they won't be there when you actually use the string.
As a bonus, you can rewrite your string as var log = #"C:\folder\folder2\this.txt";
Related
This question already has answers here:
Replace "\\" with "\" in a string in C#
(9 answers)
Escape Characters Aren't Working In Debugger (C#)
(2 answers)
How can I add \ symbol to the end of string in C#
(8 answers)
Why does .NET add an additional slash to the already existent slashes in a path?
(4 answers)
Escape sequence with "\" symbol
(4 answers)
Closed 2 years ago.
I'm struggling with escape characters in C#.
I'm saving a varchar field in a SQL Server database with a quote that needs to be escaped. So, an example could be something like that: (\"value\")
When my frontend application consume this value from API I get the value with a single escape character as i have in the DB.
The problem come up when consuming this API from C# code. For some reason this single character (\) is replaced for three of them (\\\).
After debugging the code I found that when I retrieve the data I get this:
debugging the value
When I click to check the value it seems OK:
Value into Text Visualizer
My question is why theese two extra backslashes are added and how can I get rid of them in order to get only one => (\").
Hope anyone can help me :)
Thanks!
You value should be correct. The debugger window escape the “/“, therefore it appears like escape(backslash)escape(quote).
(//)(/“)
This question already has answers here:
How do I write a backslash (\) in a string?
(6 answers)
Closed 2 years ago.
I'm trying to print \"Hey\" in the Console But when I run it It just print the "Hey" without \ and when i put another \ in the beginning and \ in end it says theres an Error
You have to escape the " as well as the \. Both should be escaped with a backslash itself. Your final result should look something like:
Console.WriteLine("\\\"Hey\\\"");
This question already has answers here:
C# Regex Issue "unrecognized escape sequence"
(3 answers)
Regular expression to allow backslash in C#
(3 answers)
Closed 3 years ago.
I am looking to create a list of file inside a folder, all matching a regex.
But the regex crash whenever I put a path containing backslash inside the regex.
string test = #"C:\TEMP"; // or "C:\\TEMP"
Regex reg = new Regex(test + "\\" + "tstNL02" + #"_(.*).csv"); // it crash here
FileList = Directory.GetFiles(test).Where(path => reg.IsMatch(path)).ToList();
ArgumentException: parsing "C:\TEMP\tstNL02_(.*).csv" - Unrecognized escape sequence \T.
As far as I know, using a # or escaping the backslash should prevent the regex from interpreting backslashes in a string as an escaping character (and if I remove test from the regex but leave the \\, regex doesn't crash).
If I put #"C:\\TEMP" the Regex doesn't parse any and the match fail C:\\TEMP\tstNL02_(.*).csv
I fixed my problem by going another way but I was wondering why and how to fix this backslash-in-a-variable thing ?
Edit: problem didn't came from regex but from the fact I was using the same string for regex and Directory.GetFiles. Adding escaping backslashes to the string so Regex worked correctly would cause Directory.GetFiles to not escape those added backslashes, thus not matching files
This question already has answers here:
Escaping backslashes in string
(2 answers)
Closed 6 years ago.
I have a line of code like this
process.StartInfo.WorkingDirectory =Directory.GetCurrentDirectory() + "\bin";
but in the second string the "\" symbol isn't seen like a character of the string, how i can fix it?
The outputs of this line is "C:\Users\User\Desktop\Tesin" where Directory.GetCurrentDirectory()= "C:\Users\User\Desktop\Test"
Use #"\bin" or you need to escape any \ to \\ like "\\bin"
be aware using #"blahblahblah" changes the behave of escaping (a " must be escaped with "" instead of \" )
write "\\bin" - the \ character needs to be escaped with \ so - \
In many languages, the backslash (\) is an escape character, meaning it tells the system to take the following character literal.
You can just double the backslash, and it will work: "\\bin"
This question already has answers here:
What is the difference between a regular string and a verbatim string?
(6 answers)
Closed 9 years ago.
From ReSharper, I know that
var v = #"something";
makes v something called a verbatim string. What is this and what is a common scenario to use it?
In a verbatim string, escape sequences (such as "\n" for newline) will be ignored. This helps you type strings containing backslashes.
The string is also allowed to extend over multiple lines, for example:
var s = #"
line1
line2";
The string will appear the same way you typed it in your source code, with line breaks, so you don't have to worry about indents, newlines etc.
To use quotes inside a verbatim literal, you just double them:
#"This is a string with ""quotes""."
It means that special chars don't need to be escaped, since you informed the compiler to expect special characters, and to ignore them. A common use case might be to specify a connection string:
string sqlServer = #"SERVER01\SQL";
This is perfectly valid, as opposed to in normal use where the backslash would be considered an escape character.