WebAug 11, 2014 · public int GetLineNumber (string lineToFind) { int lineNum = 0; string line; System.IO.StreamReader file = new System.IO.StreamReader ("c:\\test.txt"); while ( (line = file.ReadLine ()) != null) { lineNum++; if (line.Contains (lineToFind)) { return lineNum; } } file.Close (); return -1; } Share Follow answered Oct 20, 2024 at 0:32 John M. WebApr 29, 2013 · int number; string str="!23"; if (int.TryParse (str, out number)) { //do something } if you are 100% sure its an int you can use: int.Parse (str); or Convert.ToInt32 (str); it will cast an execption if its not an int Share Improve this answer Follow edited Apr 29, 2013 at 21:11 answered Apr 29, 2013 at 21:05 Kimtho6 6,124 9 40 56 Add a comment 0
How to get the line number of specific text in string in c#
WebApr 17, 2015 · 1. Create a method and call it hasSpecialChar with one parameter and use foreach to check every single character in the textbox, add as many characters as you want in the array, in my case i just used ) and ( to prevent sql injection . public void hasSpecialChar (string input) { char [] specialChar = {' (',')'}; foreach (char item in ... Webstring sentence = "X10.4 cats, Y20.5 dogs, 40 fish and 1 programmer."; string [] digits = Regex.Split (sentence, @"\D+"); For this code I get these values in the digits array 10,4,20,5,40,1 But I would like to get like 10.4,20.5,40,1 as decimal numbers. How can I achieve this? c# regex string split Share Follow edited Jan 11, 2024 at 16:18 can you marry a tree
[c++] How to determine if a string is a number with C++?
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 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 … WebIn C#, a string is a sequence of characters. For example, "hello" is a string containing a sequence of characters 'h', 'e', 'l', 'l', and 'o'. We use the string keyword to create a string. For example, // create a string string str = "C# Programming"; Here, we have created a string named str and assigned the text "C# Programming". brigitte breault psychological services