I have a string which contains backward slashes and I want to reply it with forward slashes
string filename = "te\test";
var x = filename.Split('\\');
Console.WriteLine(filename);
Console.ReadLine();
I have tried something like this but it is getting the same string "te\test" into x.
Is there any other way to do this?
You original string is not:
te\test
it's:
te{tab}est
\t is the tab character. So you can't split on the \ because you original string doesn't have a \
If you do something like this:
string filename = "te\\test";
var x = filename.Split('\\');
Console.WriteLine(string.Join("/",x));
You'll get the result you wanted.
But you really don't need to Split and Join when you can just Replace:
Console.WriteLine(filename.Replace('\\','/'));
Note: you can use # with your original string to make it a literal string (escapes are ignored) as #Joeb454 suggests (and that's usually what I'll do), but unfortunately the same trick doesn't apply to chars so you can't, for example, do #'\'.
Your initial string appears to be wrong, you're escaping the 't', giving you a tab character, it should be string filename = "te\\test";
You could also declare it as string filename = #"te\test"; - preceding the string with the # sign indicates to the compiler that it's a literal string, and therefore nothing will be escaped.
string filename = "te\test";
string[] x = filename.Split('\\');
Console.WriteLine(filename);//this line should be Console.WriteLine(x[0]+X[1]);
Console.ReadLine();
But I think you are looking for
filename = filename.Replace("\\","/");
Console.WriteLine(filename);
Related
string s = "P\04";
string z = s.Replace('\\', '-');
Console.WriteLine(z);
I need to replace '\' character in to '-' character in a string. I tried several ways to replace, couldn't able to do for '\' character only.
Please any one suggest a way to do this
Your code to replace the \ is fine. The problem is with your input string, where the \ escapes the 0. It would work if you had this:
string s = "P\\04";
string z = s.Replace('\\', '-');
Console.WriteLine(z);
The output is P-04 assuming that's what you expect.
string s = #"P\04";
string z = s.Replace('\\', '-');
Console.WriteLine(z);
Add # at the before value of string s to make it a verbatim. That way '\' is treated as is. Otherwise \0 are treated as one character to make a different character.
You can also use Regex,
var result = Regex.Replace(#"P\04", #"\\", #"-");
Console.WriteLine(result);
FIDDLE
I have a string that contains sequence of three "\" and I have to replace them with single "\".
the string is:
string sample = "<ArrayOfMyObject xmlns:i=\\\"http://www.w3.org/2001/XMLSchema-instance\\\"";
I have tried, as suggested in other threads, with the following code but it did not work:
string result = sample.Replace(#"\\\",#"\");
string result = sample.Replace("\\\\\\","\\");
thanks in advance
In your sample, your string doesn't actually have three "\" characters in it - Some of them are escape characters.
\ will actually correspond to a single \ character.
\" will actually correspond to a single " character.
The value of your string, in memory, is:-
<ArrayOfMyObject xmlns:i=\"http://www.w3.org/2001/XMLSchema-instance\"
So, your replace operations do nothing because they do not match anything.
To replace \\\ with \ in a c# string try this code (tested and working)
string strRegex = #"(\\){3}";
string strTargetString = #"sett\\\abc";
var test=Regex.Replace(strTargetString, strRegex, #"\"); //test becomes sett\abc
in debug you will see test=sett\\abc (2 backslashes but one is an escape).
Don't worry and go to text Visualizer and you'll see the correct value
then
in your specific case the code will be
string sample = #"<ArrayOfMyObject xmlns:i=\\\"http://www.w3.org/2001/XMLSchema-instance\\\"";
var result=Regex.Replace(sample , strRegex, #"\");
the output of both of the replaces is
<ArrayOfMyObject xmlns:i=\"http://www.w3.org/2001/XMLSchema-instance\"
this looks correct
but maybe you have to add 6 instead of 3 '\' in your input, because there caracters are escape characters.
I have a long string (a path) with double backslashes, and I want to replace it with single backslashes:
string a = "a\\b\\c\\d";
string b = a.Replace(#"\\", #"\");
This code does nothing...
b remains "a\\b\\c\\d"
I also tried different combinations of backslashes instead of using #, but no luck.
Because you declared a without using #, the string a does not contain any double-slashes in your example. In fact, in your example, a == "a\b\c\d", so Replace does not find anything to replace. Try:
string a = #"a\\b\\c\\d";
string b = a.Replace(#"\\", #"\");
In C#, you can't have a string like "a\b\c\d", because the \ has a special meaning: it creates a escape sequence together with a following letter (or combination of digits).
\b represents actually a backspace, and \c and \d are invalid escape sequences (the compiler will complain about an "Unrecognized escape sequence").
So how do you create a string with a simple \? You have to use a backslash to espace the backslash:\\ (it's the espace sequence that represents a single backslash).
That means that the string "a\\b\\c\\d" actually represents a\b\c\d (it doesn't represent a\\b\\c\\d, so no double backslashes). You'll see it yourself if you try to print this string.
C# also has a feature called verbatim string literals (strings that start with #), which allows you to write #"a\b\c\d" instead of "a\\b\\c\\d".
You're wrong. "\\" return \ (know as escaping)
string a = "a\\b\\c\\d";
System.Console.WriteLine(a); // prints a\b\c\d
string b = a.Replace(#"\\", #"\");
System.Console.WriteLine(b); // prints a\b\c\d
You don't even need string b = a.Replace(#"\\", #"\");
this works
You don't even need string b = a.Replace(#"\", #"\");
but like if we generate a dos command through c# code... eg:- to delete a file
this wil help
I did this in a code in a UWP application.
foreach (var item in Attendances)
{
string a = item.ImagePath;
string b = a.Replace(#"\\", "/");
string c = a.Replace("\\", "/");
Console.WriteLine(b);
Console.WriteLine(a);
item.ImagePath = c;
}
and the ones without the # symbol is the one that actually worked. this is C# 8 and C# 9
I want this line of code to work-
int start = s.IndexOf(""_type": "Person""name": "");
But clearly the double quotes are messing up the search... Any ideas about how to get this working?
You can take two approaches to this.
The first is by using a string-literal and escaping double-quotes with another double quote:
string s = #"This is a ""quoted"" string.";
s.IndexOf(#"a ""quoted"" string");
The other is to escape the double-quotes with a backslash:
string s = "This is a \"quoted\" string.";
s.IndexOf("a \"quoted\" string");
If you want to use a double-quote in a string, one way is to escape it with a backslash. \
string myString = "This is a string \" with a double quote";
So what you want to do is escape the string? Try this:
int start = s.IndexOf(#"this ""word"" is escaped");
I'm assuming you want to run IndexOf() on the entire string, including the quotes inside? All you have to do is use both types of quotes: ' ' and " ". As long as you use one to designate the main string and the other to designate sub-strings, it should work, i.e. something like: s.IndexOf(' "_type": "Person""name": " ');
I'm trying to match on some inconsistently formatted HTML and need to strip out some double quotes.
Current:
<input type="hidden">
The Goal:
<input type=hidden>
This is wrong because I'm not escaping it properly:
s = s.Replace(""","");
This is wrong because there is not blank character character (to my knowledge):
s = s.Replace('"', '');
What is syntax / escape character combination for replacing double quotes with an empty string?
I think your first line would actually work but I think you need four quotation marks for a string containing a single one (in VB at least):
s = s.Replace("""", "")
for C# you'd have to escape the quotation mark using a backslash:
s = s.Replace("\"", "");
I didn't see my thoughts repeated already, so I will suggest that you look at string.Trim in the Microsoft documentation for C# you can add a character to be trimmed instead of simply trimming empty spaces:
string withQuotes = "\"hellow\"";
string withOutQotes = withQuotes.Trim('"');
should result in withOutQuotes being "hello" instead of ""hello""
s = s.Replace("\"", "");
You need to use the \ to escape the double quote character in a string.
You can use either of these:
s = s.Replace(#"""","");
s = s.Replace("\"","");
...but I do get curious as to why you would want to do that? I thought it was good practice to keep attribute values quoted?
s = s.Replace("\"",string.Empty);
c#: "\"", thus s.Replace("\"", "")
vb/vbs/vb.net: "" thus s.Replace("""", "")
If you only want to strip the quotes from the ends of the string (not the middle), and there is a chance that there can be spaces at either end of the string (i.e. parsing a CSV format file where there is a space after the commas), then you need to call the Trim function twice...for example:
string myStr = " \"sometext\""; //(notice the leading space)
myStr = myStr.Trim('"'); //(would leave the first quote: "sometext)
myStr = myStr.Trim().Trim('"'); //(would get what you want: sometext)
You have to escape the double quote with a backslash.
s = s.Replace("\"","");
s = s.Replace(#"""", "");
This worked for me
//Sentence has quotes
string nameSentence = "Take my name \"Wesley\" out of quotes";
//Get the index before the quotes`enter code here`
int begin = nameSentence.LastIndexOf("name") + "name".Length;
//Get the index after the quotes
int end = nameSentence.LastIndexOf("out");
//Get the part of the string with its quotes
string name = nameSentence.Substring(begin, end - begin);
//Remove its quotes
string newName = name.Replace("\"", "");
//Replace new name (without quotes) within original sentence
string updatedNameSentence = nameSentence.Replace(name, newName);
//Returns "Take my name Wesley out of quotes"
return updatedNameSentence;
s = s.Replace( """", "" )
Two quotes next to each other will function as the intended " character when inside a string.
if you would like to remove a single character i guess it's easier to simply read the arrays and skip that char and return the array. I use it when custom parsing vcard's json.
as it's bad json with "quoted" text identifiers.
Add the below method to a class containing your extension methods.
public static string Remove(this string text, char character)
{
var sb = new StringBuilder();
foreach (char c in text)
{
if (c != character)
sb.Append(c);
}
return sb.ToString();
}
you can then use this extension method:
var text= myString.Remove('"');