在C＃中转义目录字符

Question

I need to escape chars in a string I have, which content is C:\\\\blablabla\\blabla\\\\bla\\\\SQL.exe to C:\\blablabla\\blabla\\bla\\SQL.exe so I could throw a process based on this SQL.exe file.

I tried with Mystring.Replace("\\\\", @"\\"); and Mystring.Replace(@"\\\\", @"\\"); but none worked.

How could I do this?

Thanks a lot in advance.

EDITED: Corrected type in string.

Answer 1

I very strongly suspect that you are looking this input string in the Visual Studio debugger and fooling yourself that there are actually 2 \\ whereas in reality there aren't. That's the reason why attempting to replace \\\\ with \\ doesn't do anything because in the original string there is no occurrence of \\\\ . And since you are looking the output once again in the debugger, you are once again fooling yourself that there are 2 \\ .

Visual Studio debugger has this tendency to escape strings. Log it to a file or print to the console and you will see that there is a single \\ in your input string and you don't need to replace anything.

Answer 2

It looks like you're trying to replace double backslash ( @"\\\\" ) in a string with single backslash ( @"\\" ). If so try the following

Mystring = Mystring.Replace(@"\\", @"\");

Note: Are you sure that the string even contains double backslashes? Certain environments will print out a single backslash as a double (debugger for example). Your comment mentioned my approach didn't work. That's a flag that there's not actually a double backslash in your string (else it would work).

Answer 3

The @ character specifies a string as a verbatim literal string, but that is when constructing a string. If you use Mystring.Replace("\\\\", @"\\") then nothing will be replaced, essentially, as the two strings are the same.

If you want a string without the escape characters, then either define it with:

string path = @"C:\Some\Directory\And\File.txt";

Or you can replace the \\\\ with / like so:

path = path.Replace('\\', '/');

It is worth noting, as mentioned by Darin Dimitrov, that the string containing two \\ characters is likely just the display of the string (ie when using the debugger) and not the actual value of the string.

Answer 4

i think OP is asking how to escape \\\\ in File Path, if that in the case, as OP is not mentioning where he's trying to use this. so i'm putting a guess.

Then You use Path.Combine() method to get the FileName path.

Path.Combine() Documentation

Answer 5

where are you looking at this output? because it could be the string is what you expect, but viewing the value through the debugger, output window, etc. is escaping the slash

Answer 6

Use something like:

myStr = myStr.Replace(@"\\", @"\");

Make sure you assign the result of Replace method to myStr. Otherwise it goes into void ;)

Answer 7

Try adding "|DataDirectory|\\MyFile.xyz" where you need it. It works with connection strings it might work with something else (I haven't really tried to apply it to something else).

Answer 8

我不明白您想要什么，如果您只想获取文件名（转义目录字符），则可以尝试：

string fileName = Path.GetFileName(YourString)

Answer 9

Noloman.... when you concatenate are you perhaps missing a "\\" when concatenating the directory.. I am assuming that you are trying to join directory + some sub directory.. @noloman keep in mind that in C# "c:\\Temp" is written like this "c:\\Temp" or @"c:\\Temp" one is Literal the other is how to represent a "\\" in the legacy way of coding because the "\\" is an escape Char and when dealing with directorys we represent all paths and sub paths with "\\" so perhaps by you replacing the "\\" you are truly messing up your own expected process

Mystring = Mystring.Replace(@"\\", @"\"); 

should work for you unless you are truly meaning to do Mystring = Mystring.Replace(@"\\", "\\"); which if you believe that you are expecting a "\\" to be used to build the directory.. then of course it will not work.. because you have just in essense replaced the backslash with a return char.. I hope that this makes sense to you..

System.IO.Directory.GetCurrentDirectory(); you are using is also an Issue.. SQL Server is not that application thats running the code.. it's your .NET application so you need to either put the location of the SQL Server into a variable, app.config, web.config ect... please edit your question and paste the code that you are using to do what it is that you want to do inregards to the SQL Server Code.. you would probably want to look at the Are you wanting to do something like Process.Start(....) meaning the file name..?