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Get string between two complicated string in a string C# [closed]

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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

Find a word between 2 words and replace them [closed]

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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.

How to get string from whole [closed]

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I have a string whose text is something like:
Ebook/AspNetBook.Pdf/.NetBook
or
Ebook/Asp.Net/AspNetBook.Pdf/.NetBook
or may be this
Ebook/Asp.Net/.NetBook/AspNetBook.Pdf
That means string may be come with many forward slashes and it will not come in fix format. I want to get file name and its ext AspNetBook.Pdf from this string.
I have tried to get string to using sub string or replace character before period but do not get proper result.

If your strings always have that particular form string1/string2/string3 you can either use a simple string split or a regular expression.
var xx = input.Split('/')[1];
Or
var xx = Regex.Match(input, #".+/(.+)/.+").Groups[1].Value;
Be aware, this contains no error checking, for instance if the input does not match the given form

This might help you.
string st = "Ebook/AspNetBook.Pdf/.NetBook";
string newst = st.Substring(st.IndexOf('/') + 1);
string outptst = newst.Substring(0,newst.IndexOf('/'));
since you wanted to get the string between 2 forward slashes. This would give you the correct output required.

Try with this:
string st = "Ebook/AspNetBook.Pdf/.NetBook";
string out = st.Split('/')[1];
Be aware that this will only work if you always have a / in your input and if it is always the second value.

Here p1 will find first index of '/' and p2 will index of '/' right after p1.
String text= "Ebook/AspNetBook.Pdf/.NetBook";
int p1=text.indexOf('/');
int p2=-1;
if(p1!=-1)
p2=text.indexOf('/',p1+1);
if(p1!=-1&&p2!=-1)
System.out.print(text.substring(p1+1,p2);

Filter String with Regular Expression [closed]

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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;

extract a word found in a String [] [closed]

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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 :)