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I have a large text. I need find any word in the text then copy to variable the phrase that contains the word. How can I do this by C#? Maybe I can use some regular expression?
Use the regex expression [^.!?;]*(search)[^.?!;]*[.?!;], where "search" is your query.
string query = "professional";
var regex = new Regex(string.Format("[^.!?;]*({0})[^.?!;]*[.?!;]", query));
string text =
#"Stack Overflow is a question and answer site for professional and enthusiast programmers.
It's built and run by you as part of the Stack Exchange network of Q&A sites.
With your help, we're working together to build a library of detailed answers to
every question about programming.";
var results = regex.Matches(text);
for (int i = 0; i < results.Count; i++)
Console.WriteLine(results[i].Value.Trim());
This code uses the regex to find all sentences containing "professional", and outputs them, trimming any whitespace.
Output: Stack Overflow is a question and answer site for professional and enthusiast programmers.
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I want to remove some string from regex in c#.
I have a string
000603ABC140702-005051-I-FILL200-NNYYNY180319-142110-A2002.zip
From this I want to remove those strings
140702
142110
And I want a result as
000603ABC-005051-I-FILL200-NNYYNY180319--A2002.zip
How can I do that in regex?
You can use the Regex.Replace method (https://msdn.microsoft.com/en-us/library/xwewhkd1(v=vs.110).aspx).
var regex = new Regex("(140702)|(142110)");
var result = regex.Replace("000603ABC140702-005051-I-FILL200-NNYYNY180319-142110-A2002.zip", "");
Although, as already stated by #CompuChip, String.Replace would probably be more efficient in this case. There's a discussion of various methods of replacing substrings and their efficiency at https://blogs.msdn.microsoft.com/debuggingtoolbox/2008/04/02/comparing-regex-replace-string-replace-and-stringbuilder-replace-which-has-better-performance/.
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Help write a regular expression to search for files and folders,
searches for a given mask. In the mask, you can use "*"
(any characters in any number), and the "?" (one symbol).
Here shows you how to use regex in C#.
You could always just loop the directory that you're looking in and check the file names instead of making a regex. (You'll need to use System.IO)
Perhaps something like this?
string [] fileEntries = Directory.GetFiles(targetDirectory);
Regex regex = new Regex("target file name");
Match match = regex.Match(string.Join(" ", fileEntries););
if (match.Success)
{
Console.WriteLine(match.Value);
}
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How can I extract the word "Word" (or any word) using Regex into a string in both cases? in the following string:
Word = CreateObject(980, -1696.5996, -12.2998, 5.3, 0, 0, 317.999);
MoveObject(Word, -1660.9004, 79.40039, 2.2,6);
I am pretty new in Regex, and I am having hard time understanding the tutorials over the internet.
I have tried using /(.*)( = CreateObject)/ but no luck
Tried using /MoveObject\(.*?\,/ and it works, but it matches MoveObject too, and I want it to match only "Word"
Thanks!
You could try the below regex.
#".*?(?= = CreateObject)|(?<=MoveObject\().*?(?=,)"
OR
#"\S+?(?= = CreateObject)|(?<=MoveObject\().*?(?=,)"
DEMO
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I have a class library to add a customized toolbox to a external IE browser.
I'm using SHDocVw to do the back/forward buttons (e. g.). My question is, sense this is multilingual, how can I change the buttons text...
The url give me "/en/" or "/ar/", how can i catch this?
Thanks
With the Mati Cicero answer I managed to do it.
string page = ie.LocationURL;
Regex rgx = new Regex(#"https?://[a-zA-Z0-9.-_]+(/((?'lang'ar|en)|.*))/?");
var lang = rgx.Match(page).Success ? rgx.Match(page).Groups[1].Value : "ar";
You can try the following regex, I tried to make it as much generic as I could:
https?:\/\/[a-zA-Z0-9\.\-_]+(\/((?'lang'es|en)|.*))\/?
You would then examine the group "lang" to see if a match was made.
You would aso like to add more available languages (Added ch and in):
https?:\/\/[a-zA-Z0-9\.\-_]+(\/((?'lang'es|en|ch|in)|.*))\/?
If its always the first directory;
var lang = new Uri("http://sitename.com/en/pages/default.aspx")
.Segments[1].Replace("/", string.Empty).ToLower();
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I am sorry for that bad Title, but basicaly my problem is really simple. I got 1 string which is basic alphabet and the second string which is gonna be part of the alphabet (8 characters) which user will fill up by himself. If 2 characters are the same, they will get removed and then rest of characters will be in the TextBox3. could someone pls help me ?
string alphabet = "abcdefghijklmnopqrstuvwxyz_*";
string special = TextBox2.Text;
I assume you want to check the existence of substring and remove from the parent string, Try this
string alphabet = "abcdefghijklmnopqrstuvwxyz_*";
string special = textBox2.Text;
if (alphabet.ToLowerInvariant().Contains(special))
{
textBox3.Text = alphabet.Replace(special, "");
}