Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 2 months ago.
Improve this question
I have shared the relevant image below.
Text in image ;
"C:\Users\Hp\OneDrive-blablablabla\Masaustu\EdaGorsel\4.PNG\tmanager\tmanager\t2022/12/12\r\nddd\tV1.0"
I only want 4.PNG from the above post
2.I should not use special names or filenames
3.Ex: \t between \ like this
I hope I was able to explain my problem
you could use a Regex match to get this part of the url :
private Regex _regex = new Regex(#"^.*\\(?<Image>.*\.PNG)\\.*$");
(You can test regex here)
Then use this to read the match :
var result = _regex.Match(url).Groups["Image"].Value;
Another, simplier solution, would be to use :
url.Split("\\")[6];
This works only if the searched part is always at the same spot.
You can split your strings into many shorter ones using .Split function:
string[] words = path.Split("\\");
Using the double \ to escape the character..
If you don't guarantee that the string you need is always at the same position, you can use this to fetch it from the list:
string neededString = words .FirstOrDefault(str => str.Contains(".PNG"));
This will return the first instance of any word from your string that contains ".png" in it.
there is sevral ways
if you know number of "" in your string then split it(str.Split(' \ ')) and get wanted index
use regular expersion to extract filename
Related
Closed. This question needs to be more focused. It is not currently accepting answers.
Want to improve this question? Update the question so it focuses on one problem only by editing this post.
Closed 1 year ago.
Improve this question
I have a URL string that is something like below:
https://example.com/app/1095600/example2234
I want to only get "1095600"
this number is variable and can be three or more digits long.
If the number is always in the same position (following https://example.com/app/), you could split the string by the slash (/) character and extract it:
string input = "https://example.com/app/1095600/example2234";
string result = input.Split("/")[4];
You can try matching the required substring with a help of regular expressions, esp. if you have elaborated criteria
three or more digits
Code:
using System.Text.RegularExpressions;
...
string url = "https://example.com/app/1095600/example2234";
string number = Regex.Match(url, #"(?<=\/)[0-9]{3,}(?=\/|$)").Value;
Mureinik's answer will work fine, but can quickly break if your URL is missing the https:// part. It would be much better to convert the string to a Uri and use the Uri.Segments property to extract the second segment of the path.
Uri address = new Uri("https://example.com/app/1095600/example2234");
string id = address.Segments[2].Replace("/", "");
The segments include the ending slash, so you need to remove it manually.
Identify the begining, and the ending string marks.
Beginning = "/app/", Ending = "/".
Cut it out of there.
String input = "https://example.com/app/1095600/example2234";
String str_number = input.Substring(input.IndexOf("/app/")+5).Split('/')[0];
int int_number = Convert.ToInt32(str_number);
Always try to write the simplest code you can get. And have fun!
Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 2 years ago.
Improve this question
How to find between 2 words and replace them into new string?
I wanna replace same.
for example given string :
string s = "word1-word2same-word3-word4";
same is = "word2";
What i wanna :
string s = "word1-word2word2-word3-word4";
But what if given string is:
string s = "word1same-word2-word3-word4";
same is -> word1;
What i wanna in this example:
string s = "word1word1-word2-word3-word4";
How to find what word is containing same? How to do it?
I think the following regular expression replacement is what you want
var input = "word1same-word2same-word3";
var result = Regex.Replace(input, "(?<=^|-)([^-]*)same", "$1$1");
Console.WriteLine(result);
would give you
word1word1-word2word2-word3
So it will replace all the instances of "same" with whatever comes before it up to a hyphen or the beginning of the string.
Note that something like "whatsamesamesame" will give you a result of "whatsamesamewhatsamesame", basically it will only replace the last "same" after a hyphen or the beginning of the string.
Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 8 years ago.
Improve this question
Hi i need filter a string with a regular expresion. I have read that I must use the method Replace of the class Regex with a pattern but I don't know that Expresion Regular I need to filter my String.
I have a large string s and I want extract or filter the ? in the next pattern of the string:
"string fixed?_IP"
string fixed is a string that always is the same
IP is a valid IP number
Please I need the pattern to pass to the function Replace of the class Regex to obtain the string ?
I try some patterns but anyone works.
pattern1="(ftp_files\\?_[0-9]+.[0-9]+.[0-9]+.[0-9]+)"
pattern2= "(ftp_files\\?_/^(([1-9]?[0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]).){3}([1-9]?[0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$/)"
ftp_files\ is the string fixed
In pattern2 I try an expresion regular that I have found to validate an IP.
You don't need to call Regex.Replace if what you want is to extract the information. You have to call Regex.Match for that. Or, if you really want to call Replace, please tell us what part you want to replace, and what should the substitute look like.
var match = Regex.Match(inputString, #"ftp_files\\\?_(?<ip>\d+\.\d+\.\d+\.\d+)");
var ipAddress = match.Groups["ip"].Value;
Here I chose a more legible regex for the ip address (\d+\.\d+\.\d+\.\d+). If you really need to ensure each byte of the IP is valid, you could replace each instance of \d+ in that expression with something like this: (?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).
EDIT: If you want to extract what's between ftp_files\ and _IP, here's the regex:
var match = Regex.Match(inputString, #"ftp_files\\(?<value>.*?)_(?<ip>\d+\.\d+\.\d+\.\d+)");
var value = match.Groups["value"].Value;
Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 8 years ago.
Improve this question
string [] leerArchivo;
good evening, i have to get a sub-string from a string. I have a file type "string []" that contains a string like this.
//start class ClassName xxxxx
where ClassName can be any name, then this is a description that does not interest me to capture, so if I need in the optener (ClassName)
thank you very much beforehand, I hope and make me understand.
To do this you call the "Substring" method in which you specify the first and last indexes of the characters you want to get.
string input = "OneTwoThree";
//Get first three characters
string sub = input.Substring(0, 3);
The output would be just the first 3 letters (in this case "One").
You can also specify just the first index of and the method will take everything from that character onwards
string input = "OneTwoThree";
string sub = input.Substring(3);
the output in this case will be: "TwoThree"
but it looks like you want to get the name of a class, and there is a much simpler way to do that :
typeof(MyProgram).Name
Hope it helps :)
Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 9 years ago.
Improve this question
So I am trying to replace the characters below from a users input which relates to a SQL column in a table.
Example:
User creates a field called My(first)try. In SQL this comes up as Myfirsttry.
I am currently write code to replace the users input with our and I am stuck.
I have this so far.
itemreplace = itemreplace.Replace("(", "");
This however, doesn't do the trick. Thoughts, comments, suggestions?
I feel like the real-world case is more complicated, and you're not indicating that, but to handle your example text My(first)try you could just chain the Replace statements:
itemreplace = itemreplace.Replace("(", "").Replace(")", "");
However, it seems like the real-world case is more along the lines of leveraging a Regex like this:
^[a-zA-Z0-9_##][a-zA-Z0-9#$#_]*$
and here is a Regex 101 that would prove that.
Then using that might look like this:
var valid = Regex.IsMatch("My(first)try", pattern);
I did reference this post, What special characters are allowed in T-SQL column name?, to determine the allowed characters for a column name.
First option:
String itemreplace = new String("My(first)try");
String charsToRemove = new String[] {"(", ")"};
foreach (char c in charsToRemove)
{
itemreplace = itemreplace.Replace(c, string.Empty);
}
Second option:
itemreplace = itemreplace.Replace("(", string.Empty).Replace(")", string.Empty);