Question

How to perform a case-insensitive search in C#

Answer 1

using System;
 
class Program
{
    static void Main()
    {
        string str = "The FOX Profession is C# Programmer";
        string toFind = "fox";
 
        bool contains = str.IndexOf(toFind, StringComparison.OrdinalIgnoreCase) >= 0;
         
        Console.WriteLine(contains); 
    }
}
 
 
 
/*
run:
 
True
 
*/

 

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Answer 2

using System;
using System.Text.RegularExpressions;
 
class Program
{
    static void Main()
    {
        string str = "The FOX Profession is C# Programmer";
        string pattern = "fox";
 
        bool contains = Regex.IsMatch(str, pattern, RegexOptions.IgnoreCase);
         
        Console.WriteLine(contains); 
    }
}
 
 
 
/*
run:
 
True
 
*/

 

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