C# find numbers in a string

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WebFeb 12, 2009 · If you're using .NET 3.5 you can do this in a one-liner with LINQ: int count = source.Count (f => f == '/'); If you don't want to use LINQ you can do it with: int count = source.Split ('/').Length - 1; You might be surprised to learn that your original technique seems to be about 30% faster than either of these! WebJul 27, 2011 · this sample code in C# Regex regexpattern = new Regex(@"(([0-9]\.*)*[0-9])"); String test = @"Question 1 and Question 2.1.3"; foreach (Match match in regexpattern.Matches(test)) { String language = match.Groups[1].Value; } Share Improve this answer Follow edited Jul 27, 2011 at 10:23 answered Jul 27, 2011 at 9:50

c# - How to count lines in a string? - Stack Overflow

WebApr 8, 2024 · C# Program to Identify if a string Is a Number Using Regex.IsMatch() Method. In C# we can use regular expressions to check various patterns. A regular … WebJul 2, 2024 · Method first: var NumberFromString= string .Join ( string .Empty, Regex.Matches (StringWithNumber, @"\d+" ).OfType ().Select (m => m.Value)); Input: " 121 testing" Output: "121" Second Method: string StringWithNumbers= "121 - Testing" ; var data = Regex.Match (StringWithNumbers, @"\d+" ).Value; … flameless combustion recirculation ratio

c# - Using LINQ to parse the numbers from a string - Stack Overflow

Webpublic static int CountLines (this string text) { int count = 0; if (!string.IsNullOrEmpty (text)) { count = text.Length - text.Replace ("\n", string.Empty).Length; // if the last char of the string is not a newline, make sure to count that line too if (text [text.Length - 1] != '\n') { ++count; } } return count; } Share Follow WebJul 23, 2012 · Check if there is phone number in string C#. Ask Question Asked 10 years, 8 months ago. Modified 10 years, 8 months ago. ... I don't want to check if whole string is phone number, I just want to check if the string contains phone number (and block it). – Mosh Feu. Jul 23, 2012 at 6:01. WebAug 25, 2011 · This is the most specific pattern, in case not every line ends with a number you're interested in: @"\bID\s+ (\d+)$" Note: Target numbers will be in capture group 1. However, based on your description, you could just use this: @"\d+$" It simply looks for a string of numeric digits at the very end of each line. This is what I'd go with. Share can people lick their elbow

c# - How would you count occurrences of a string (actually a char ...

unity3d - find Count of Substring in string C# - Stack Overflow

WebJan 29, 2024 · int n; bool isNumeric = int.TryParse ("123", out n); Update As of C# 7: var isNumeric = int.TryParse ("123", out int n); or if you don't need the number you can discard the out parameter var isNumeric = int.TryParse ("123", out _); The var s can be replaced by their respective types! Share Improve this answer Follow edited Feb 14, 2024 at 13:37 WebAug 27, 2024 · Assume string is like this . string test = "word means collection of chars, and every word has meaning"; then just use regex to find how many times word is matched in your test string like this . int count = Regex.Matches(test, "word").Count; output would be 2 can people leave afghanistanWebYes it would but a little cut off at last! string [] inputs = new [] {"1 Of 1","2 Of 4", "8 Of 10"}; foreach (var input in inputs) { string [] numbers = Regex.Split (input, @"\D+"); Console.WriteLine ("Last Number from input \" {0}\" is: {1}", input,numbers [numbers.Length-1]); } Share Improve this answer Follow answered Mar 28, 2014 at 5:25 flameless christmas window candles

"WebTo realize the processing of a string, first remove the spaces at the beginning and end of the string. If there are consecutive spaces in the middle of the string, only one space is reserved, that is, multiple spaces in the middle of the string are allowed, but the number of consecutive spaces cannot exceed One., Microsoft C#, I Find Bug, iFindBug.Com " - C# find numbers in a string

C# find numbers in a string

c# - Get the first numbers from a string - Stack Overflow

WebJul 5, 2013 · var myString = "$%^DDFG 6 7 23 1"; //note that this is still an IEnumerable object and will need // conversion to int, or whatever type you want. var myNumber = myString.Where (a=>char.IsNumber (a)).Take (3); It's not clear if you want 23 to be considered a single number sequence, or 2 distinct numbers. WebThe Solution is. \d+ is the regex for an integer number. So. //System.Text.RegularExpressions.Regex resultString = Regex.Match (subjectString, @"\d+").Value; returns a string containing the first occurrence of a number in subjectString. Int32.Parse (resultString) will then give you the number.

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WebJun 12, 2024 · In this article we will discuss about how to find the numbers of characters of the string in C#. 7350. We can use the string.Length property to get the number of … WebSep 24, 2024 · Output String with number: 123string456 Extracted Number: 123456 In the above example we are looping all the characters of the string str1. The Char.IsDigit () …

WebDec 29, 2024 · For the row number, 1 is entered; For the column number, there is a reference to cell A3, which contains 100; For the abs_num argument, 4 is entered, so the result will be a relative reference; The …

WebJan 25, 2016 · For the conversion I think this would be enough: string hexToDecimal = int.Parse (color, System.Globalization.NumberStyles.HexNumber).ToString (); But I am new to the regex expressions and its hard for me to do the whole algorithm for finding and then replacing the hex in easy way. I would greatly appreciate any help. WebDec 12, 2024 · This way you get the first digit from the string. string stringResult = ""; bool digitFound = false; foreach (var res in stringToTest) { if (digitFound && !Char.IsDigit (res)) break; if (Char.IsDigit (res)) { stringResult += res; digitFound = true; } } int? firstDigitInString = digitFound ? Convert.ToInt32 (stringResult) : (int?)null;

WebNov 1, 2012 · using System.Text; using System.Linq; static string GetNum (string input) { StringBuilder sb = new StringBuilder (); for (int i = input.Length - 1; i >= 0; i--) { if (input [i] < 48 input [i] > 57) break; sb.Append (input [i]); } return String.Concat (sb.ToString ().ToCharArray ().Reverse ()); } Share Improve this answer Follow

http://www.ifindbug.com/doc/id-53303/name-to-realize-the-processing-of-a-string-first-remove-the-spaces-at-the-beginning-and-end-of-the-string-if-there-are-consecutive-spaces-in-the-middle-of-the-string-only-one-space-is-reserved-that-is-multiple-spaces-in-the-middle-of-the-string-are-allowed-but-the-number-of-consecutive-spaces-cannot-exceed-one.html flameless combustion meansWebOct 6, 2024 · Regex re = new Regex (@"\d+"); Match m = re.Match (txtFindNumber.Text); if (m.Success) { lblResults.Text = string.Format ("RegEx found " + m.Value + " at position " + m.Index.ToString ()); } else { lblResults.Text = "You didn't enter a string containing a number!"; } Share Improve this answer Follow answered Sep 17, 2010 at 5:21 Pranay … flameless cooker campingWebAug 11, 2014 · Sorted by: 4. OK i will simplify.How to get line number of a specific text present in a string in c#. Then you could use this method: public static int GetLineNumber (string text, string lineToFind, StringComparison comparison = StringComparison.CurrentCulture) { int lineNum = 0; using (StringReader reader = new … flameless clear tealight candlesWebstring sentence = "X10 cats, Y20 dogs, 40 fish and 1 programmer."; string [] digits = Regex.Split (sentence, @"\D+"); For this code I get these values in the digits array 10,20,40,1 string sentence = "X10.4 cats, Y20.5 dogs, 40 fish and 1 programmer."; string [] digits = Regex.Split (sentence, @"\D+"); can people leave china if they want toWebJan 21, 2024 · string string1 = "This is an example string and my data is here"; string toFind1 = "my"; string toFind2 = "is"; int start = string1.IndexOf (toFind1) + toFind1.Length; int end = string1.IndexOf (toFind2, start); //Start after the index of 'my' since 'is' appears twice string string2 = string1.Substring (start, end - start); Share flameless church candlesWebThe Solution is. \d+ is the regex for an integer number. So. //System.Text.RegularExpressions.Regex resultString = Regex.Match (subjectString, … can people leave russiaWebSep 15, 2012 · What I'm trying to achieve is to replace the numbers in the string with a new values calculated from the (match * int). So the string input looks like: 500g Flour 14g Salt 7g Dry yeast 45ml Olive oil 309ml Water And the result should look like this: 1000g Flour 28g Salt 14g Dry yeast 90ml Olive oil 618 ml Water row ["ingredients"] is a DataRow. can people like shut up about valentines day