Find string in txt file

Question

Hello everybody!
I want to find a string in the txt file. Example I have a file .File Name is test.txt and data in this file has "Hello Everybody . I am Toan" . And I enter a string "I am" ,the result will return "true" because the file constains the string. I am using C#. Can you help me to do it? Thanks very much

Sam Hobbs · Answer

If Satyapriya's reply helped you then you should mark it as the answer.

toanhoi bui · Answer

Thanks . I done!

Satyapriya Nayak · Answer

Hi Toanhoi Try this... using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Text.RegularExpressions; using System.IO; namespace search { class Program { static void Main(string[] args) { string fName = @D:	est.txt; StreamReader testTxt = new StreamReader(fName); string allRead = testTxt.ReadToEnd(); testTxt.Close(); string regMatch = I am; if (Regex.IsMatch(allReadregMatch)) { Console.WriteLine(True:Found
); } else { Console.WriteLine(False:Not found
); } Console.ReadLine(); } } } Thanks If this post helps you mark it as answer