C# String substring exists

In this article we will discuss about how to test whether the particular string exists or not.
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The Contains method returns true if a substring is a part a string. The following code snippet checks if a substring exists in a string.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication4
    class Program
        static void Main(string[] args)
            string sentence = "Mahesh Chand is an author and founder of C# Corner.";
            Console.WriteLine("Original String: {0}", sentence);
            string findString = "author";
            bool b = sentence.Contains(findString);
            Console.WriteLine("String exists: {0}", b);

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