Is there a regex pattern that can remove .zip.ytu from the string below?
werfds_tyer.abc.zip.ytu_20111223170226_20111222.20111222
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6 Answers
Here is an answer using regex as the OP asked.
To use regex, put the replacment text in a match ( ) and then replace that match with nothing string.Empty:
string text = @"werfds_tyer.abc.zip.ytu_20111223170226_20111222.20111222";
string pattern = @"(\.zip\.ytu)";
Console.WriteLine( Regex.Replace(text, pattern, string.Empty ));
// Outputs
// werfds_tyer.abc_20111223170226_20111222.20111222
2 Comments
Richard Moore
This is the actual answer to the question. 👍
Brian Booth
This is the solution I was looking for. I'm not looking for exact matches, but regex pattern removal.
2 Comments
Richard Moore
OP asked for a solution involving a regex. Years later I come here looking for a solution with a regex. You are correct but this doesn't answer OPs or my question.
Mark Odey
Sometimes you don't have javascript to fix the problem.
Don't really know what is the ".zip.ytu", but if you don't need exact matches, you might use something like that:
string txt = "werfds_tyer.abc.zip.ytu_20111223170226_20111222.20111222";
Regex mRegex = new Regex(@"^([^.]*\.[^.]*)\.[^.]*\.[^_]*(_.*)$");
Match mMatch = mRegex.Match(txt);
string new_txt = mRegex.Replace(txt, mMatch.Groups[1].ToString() + mMatch.Groups[2].ToString());
2 Comments
ΩmegaMan
[^.]* (Zero to unlimited) of not a period. Why kill the regex parser with the '*', specifically as the zero condition being valid? Instead, use of the '+' saying -1- to many would provide a better hint and not cause back tracking. Do you really believe that there will be nothing followed by a period; or do you believe that at least 1 character will exist? If you believe that 1 character will exist, then use that and not the *. HTH
Dmitry Frank
I wrote that i don't really know what is the ".zip.ytu", and, well, i don't know what the whole string is. So, i could admit that this string might be something like "..test1.test2_123123.123123", because of why not? If i really know that there always should be something between these dots, then, of course, i would use "+" instead of "*". What's wrong?
txt = txt.Replace(".zip.ytu", "");
Why don't you simply do above?
Comments
use string.Replace:
txt = txt.Replace(".zip.ytu", "");
Comments
Here is the method I use for more complex repaces. Check out the link: http://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex.replace(v=vs.110).aspx for a Regular Expression replace. I added the code below as well.
string input = "This is text with far too much " +
"whitespace.";
string pattern = "\\s+";
string replacement = " ";
Regex rgx = new Regex(pattern);
string result = rgx.Replace(input, replacement);
Console.WriteLine("Original String: {0}", input);
Console.WriteLine("Replacement String: {0}", result);
