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This is probably a super easy question but I can't seem to figure it out. Do you know how to extract just the portion after the '/' in a string. So for like the following:
[HKEY_LOCAL_MACHINE\SOFTWARE\4YourSoul\Server\ReportEMailService\OrderConfirmation_SynergyWorldInc]
So I just want the 'OrderConfirmation_SynergyWorldInc' portion. I got 271 entries where I gotta extract just the end portion (the all have the portions before that in all of them, if that helps).
Thanks!!
IF YOU HAVE A SINGLE ENTRY...
You need to use LastIndexOf with Substring after a bit of trimming:
var s = #"[HKEY_LOCAL_MACHINE\SOFTWARE\4YourSoul\Server\ReportEMailService\OrderConfirmation_SynergyWorldInc]";
s = s.Trim('[',']');
Console.Write(s.Substring(s.LastIndexOf('\\') + 1));
Result: OrderConfirmation_SynergyWorldInc
IF YOU HAVE MULTIPLE RECORDS...
You can use a regex to extract multiple matches from a large text containing [...] substring:
[^\\\[\]]+(?=\])
See demo
For [HKEY_LOCAL_MACHINE\SOFTWARE\4YourSoul\Server\ReportEMailService\OrderConfirmation_SynergyWorldInc][SOMEENTRY] string, you will then get 2 results:
The regex matches
[^\\\[\]]+ - 1 or more characters other than ], [ and \
(?=\]) - before the end ] character.
C#:
var results = Regex.Matches(s, #"[^\\\[\]]+(?=\])").OfType<Match>().Select(p => p.Value).ToList();
var s = #"[HKEY_LOCAL_MACHINE\SOFTWARE\4YourSoul\Server\ReportEMailService\OrderConfirmation_SynergyWorldInc]";
Console.WriteLine (s.Trim(']').Split('\\').Last());
prints
OrderConfirmation_SynergyWorldInc
var key = #"[HKEY_LOCAL_MACHINE\SOFTWARE\4YourSoul\Server\ReportEMailService\OrderConfirmation_SynergyWorldInc]";
key = key.Replace("[", string.Empty);
key = key.Replace("]", string.Empty);
var splitkeys =key.Split('\\');
if (splitkeys.Any())
{
string result = splitkeys.Last();
}
Try:
string orderConfirmation = yourString.Split(new []{'\\\'}).Last();
You may also want to remove the last character if the brackets are included in the string.
string pattern = ".*\\(\w*)";
string value = "[HKEY_LOCAL_MACHINE\SOFTWARE\4YourSoul\Server\ReportEMailService\OrderConfirmation_SynergyWorldInc]"
Regex r = new Regex(pattern);
Match m = r.Match(value);
I have this string
"1.3.1.\tProduction and Sales Analysis:"
I want to trim numbers and escape sequences from the start and end of string.
Output Should be :
"Production and Sales Analysis:"
My code :
Char[] trimArray = new Char[] {'0','1','2','3','4','5','6','7','8','9','.',',',':','\\','/'};
String test = "1.3.1.\tProduction and Sales Analysis:";
test = test.TrimEnd(trimArray);
but problem is when a string like 23232-232123-asd-323 comes it also removes the digits
I want to remove the unwanted characters from start and end of string But Want to keep the string like 23232-232123-asd-323 or mobile numbers
Thanks.
Is there always '\t' in the middle?
You can try to split by '\t' and trim end.
Split(new char[]{'\t'});
If colon is always at the end of what you want to get you can split again ;)
If there is something in common separating the bad number and the good numbers like say "t", then how about finding the index of the common letter/symbol then creating a substring of everything after. For example:
String test = "1.3.1.\tProduction and Sales Analysis:";
index = test.LastIndexOfAny(new char[] { 't' });
test = test.Substring(index +1);
This should give you "Production and Sales Analysis:". You could do the same for the ":" except you want everything before it like so
int index = test.LastIndexOfAny(new char[] { ':' });
test = test.Substring(0, index);
With regex:
using System.Text.RegularExpressions;
string input = "1.3.1.\tProduction and Sales Analysis:";
string rgx = #"(?:[0-9.]+)*(?:\\[a-zA-Z])*([\w\s\.\:-_]+)(?:\\[a-zA-Z])*";
string result = Regex.Match(input, rgx).Groups[1].Value.TrimStart();
Question: How do I write an expression to split a string on ',' but not '/,'? Later I'll want to replace '/,' with ', '.
Details...
Delimiter: ','
Skip Char: '/'
Example input: "Mister,Bill,is,made,of/,clay"
I want to split this input into an array: {"Mister", "Bill", "is", "made", "of, clay"}
I know how to do this with a char prev, cur; and some indexers, but that seems beta.
Java Regex has a split functionality, but I don't know how to replicate this behavior in C#.
Note: This isn't a duplicate question, this is the same question but for a different language.
I believe you're looking for a negative lookbehind:
var regex = new Regex("(?<!/),");
var result = regex.Split(str);
this will split str on all commas that are not preceded by a slash. If you want to keep the '/,' in the string then this will work for you.
Since you said that you wanted to split the string and later replace the '/,' with ', ', you'll want to do the above first then you can iterate over the result and replace the strings like so:
var replacedResult = result.Select(s => s.Replace("/,", ", ");
string s = "Mister,Bill,is,made,of/,clay";
var arr = s.Replace("/,"," ").Split(',');
result : {"Mister", "Bill", "is", "made", "of clay"}
Using Regex:
var result = Regex.Split("Mister,Bill,is,made,of/,clay", "(?<=[^/]),");
Just use a Replace to remove the commas from your string :
s.Replace("/,", "//").Split(',').Select(x => x.Replace("//", ","));
You can use this in c#
string regex = #"(?:[^\/]),";
var match = Regex.Split("Mister,Bill,is,made,of/,clay", regex, RegexOptions.IgnoreCase);
After that you can replace /, and continue your operation as you like
For Example, I have a string like :
string str = "santhosh,phani,ravi,phani123,praveen,sathish,prakash";
I want to delete the charaters ,phani from str.
Now, I am using str = str.Replace(",phani", string.Empty);
then my output is : str="santhosh,ravi123,praveen,sathish,prakash";
But I want a output like : str="santhosh,ravi,phani123,praveen,sathish,prakash";
string str = "santhosh,phani,ravi,phani123,praveen,sathish,prakash";
var words = str.Split(',');
str = String.Join(",", words.Where(word => word != "phani"));
the better choice is to use a Split and Join method.
Easy in Linq :
String str = "santhosh,phani,ravi,phani123,praveen,sathish,prakash";
String token = "phani";
String result = String.Join(",", str.Split(',').Where(s => s != token));
(edit : I take time for testing and i'm not first ^^)
String.join(",", str.split(',').ToList().remove("phani"));
Removes any given name from the list.
How about
str = str.Replace(",phani,", ",");
This, however, does not work if "phani" is the last item in the string. To get around this, you could do this:
string source = "...";
source += ","; // Explicitly add a comma to the end
source = source.Replace(",phani,", ",").TrimEnd(',');
This adds a comma, replaces "phani" and removes the trailing comma.
A third solution would be this:
str = String.Join(",", str.Split(',').ToList().Remove("phani").ToArray());
Try to use with comma instead of;
string str = "santhosh,ravi,phani,phani123,praveen,sathish,prakash";
str = str.Replace(",phani,", ",");
Console.WriteLine(str);
Output will be;
santhosh,ravi,phani123,praveen,sathish,prakash
Here is a DEMO.
As Davin mentioned in comment, this won't work if phani is last item in the string. Silvermind's answer looks like the right answer.
string str = "santhosh,phani,ravi,phani123,praveen,sathish,prakash";
string pattern = #"\b,phani,\b";
string replace = ",";
Console.WriteLine(Regex.Replace(str, pattern, replace));
Output:
santhosh,ravi,phani123,praveen,sathish,prakash
You may use the regular expression, but you have to take care of cases when your string starts or ends with the substring:
var pattern = #",?\bphani\b,?";
var regex = new Regex(pattern);
var result = regex.Replace(input, ",").Trim(',');
Shorter notation could look like this:
var result = Regex.Replace(input, #",?\bphani\b,?", ",").Trim(',');
Explanation of the regular expression: ,?\bphani\b,? matches the word phani, but only if preceded and followed by word-delimiter characters (because of the word boundary metacharacter \b), and it can be (but doesn't have to be) preceded and followed by the comma thanks to ,? which means none or more comma(s).
At the end we need to remove possible commas from the beginning and end of the string, that's why there's Trim(',') on the result.
I am having trouble splitting a string. I want to split only the words between 2 different chars:
string text = "the dog :is very# cute";
How can I grab only the words, is very, between the : and # chars?
You can use String.Split() method with params char[];
Returns a string array that contains the substrings in this instance
that are delimited by elements of a specified Unicode character array.
string text = "the dog :is very# cute";
string str = text.Split(':', '#')[1]; // [1] means it selects second part of your what you split parts of your string. (Zero based)
Console.WriteLine(str);
Here is a DEMO.
You can use it any number of you want.
That's not really a split at all, so using Split would create a bunch of strings that you don't want to use. Simply get the index of the characters, and use SubString:
int startIndex = text.IndexOf(':');
int endIndex = test.IndexOf('#', startIndex);
string very = text.SubString(startIndex, endIndex - startIndex - 1);
use this code
var varable = text.Split(':', '#')[1];
Regex regex = new Regex(":(.+?)#");
Console.WriteLine(regex.Match("the dog :is very# cute").Groups[1].Value);
One of the overloads of string.Split takes a params char[] - you can use any number of characters to split on:
string isVery = text.Split(':', '#')[1];
Note that I am using that overload and am taking the second item from the returned array.
However, as #Guffa noted in his answer, what you are doing is not really a split, but extracting a specific sub string, so using his approach may be better.
Does this help:
[Test]
public void split()
{
string text = "the dog :is very# cute" ;
// how can i grab only the words:"is very" using the (: #) chars.
var actual = text.Split(new [] {':', '#'});
Assert.AreEqual("is very", actual[1]);
}
Use String.IndexOf and String.Substring
string text = "the dog :is very# cute" ;
int colon = text.IndexOf(':') + 1;
int hash = text.IndexOf('#', colon);
string result = text.Substring(colon , hash - colon);
I would just use string.Split twice. Get the string to the right of the first separator. Then, using the result, get the string to the left of second separator.
string text = "the dog :is very# cute";
string result = text.Split(":")[1] // is very# cute";
.Split("#")[0]; // is very
It avoids playing around with indexes and regex which makes it more readable IMO.