Selenium WebDriver : How to write test cases to search anything in Google (c#)

using System;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using OpenQA.Selenium;
using OpenQA.Selenium.Chrome;
using OpenQA.Selenium.Support;
using OpenQA.Selenium.Support.UI;


namespace SeleniumWebDriverAutomation
{
    [TestClass]
    public class GoogleSearch
    {
        // webdriver dirver definition
        public IWebDriver driver = new ChromeDriver();

        [TestMethod]
        public void navigateToGoogleWebSite()
        {
            // Go to google web site
            driver.Navigate().GoToUrl("https://www.google.lk/");
            // Maximize the web browser
            driver.Manage().Window.Maximize();
            //call searchSomething method
            searchSomething("Selenium");
        }


        public void searchSomething(string searchString)
        {
            //find the google text searchbox by uisng html id and key in passed search string
            driver.FindElement(By.Id("lst-ib")).SendKeys(searchString);
            //find the google search button by uisng html name and click on it
            driver.FindElement(By.Name("btnG")).Click();
        }
    }
}


Demo run of above code