Write a method which searches an array for a string value

Question

Write a method which searches an array for a string value and displays the message "Found" or "Not Found". The methods accepts an string array and a string variable to be searched.

Suraj Kumar · Answer

Hello Kenny, You can use one of the below methods in C#.Net string [] arr = { "One" , "Two" , "Three" }; var target = "One" ; var results = Array.FindAll(arr, s => s.Equals(target)); bool has = arr.Contains(var); // .NET 3.5 or bool has = Array.IndexOf(arr, var) >= 0; List testing = new List (); testing.Add( "One" ); testing.Add( "Two" ); testing.Add( "Three" ); testing.Add( "Mouse" ); bool inList = testing.Contains( "Mouse" ); bool exists = arr.Contains( "One" ); string [] stringArray = { "text1" , "text2" , "text3" , "text4" }; string value = "text3" ; int pos = Array.IndexOf(stringArray, value); if (pos > -1) { return true ; } else { return false ; } int findString(String var, String[] stringArray, int currentIndex, int stringMaxIndex) { if currentIndex > stringMaxIndex return (-stringMaxIndex-1); else if var==arr[currentIndex] //or use any string comparison op or function return 0; else return findString(var, stringArray, currentIndex++, stringMaxIndex) + 1 ; } //calling code int index = findString(var, arr, 0, getMaxIndex(arr)); if index == -1 printOnScreen( "Not found" ); else printOnScreen( "Found on index: " + index); You can check the element existence by arr.Any(x => x == "One" ) https://www.c-sharpcorner.com/blogs/array-search-in-c-sharp1

Suraj Kumar · Answer

You have not asked the question related to your problem specific you are facing. You are requested to give the details what you are doing and where you have stucked? Share some code snipet for better standing of your problem.

Ken J · Answer

I have a problem each code didn't work.

Ken J · Answer

Thanks you very much

Ken J · Answer

I'm new to C# and I want to know what to type up the code. Thanks.