Write selenium test case in C# using Nunit

using System;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using NUnit.Framework;
using Selenium;
namespace Phoenix.Web.Tests.Controller
{
[TestFixture]
    public class SeleniumTest
    {
        private ISelenium selenium;
        private StringBuilder verificationErrors;
        [SetUp]
        public void SetupTest()
        {
            selenium = new DefaultSelenium("localhost", 4444, "*chrome", "http://localhost:4848/");
            selenium.Start();
                       verificationErrors = new StringBuilder();
        }
        [TearDown]
        public void TeardownTest()
        {
            try
            {
                selenium.Stop();
            }
            catch (Exception)
            {
              }
            Assert.AreEqual("", verificationErrors.ToString());
        }
        [Test]
        public void FirstSeleniumTest()
        {
            # region Previous Smoke Test Code
            selenium.Open("/SignIn");
            selenium.SetSpeed("9000");
            selenium.Type("id=UserName", "ac10");
            selenium.Type("id=Password", "password1");
             selenium.Click("name=btnSubmitSignIn");
            selenium.WaitForPageToLoad("30000");
            selenium.Click("link=Create");
            selenium.WaitForPageToLoad("30000");
            selenium.Type("id=Name", "GREEN VALLEY SCHOOL");
            selenium.Type("id=PostCode_1", "KT198DL");
            selenium.Click("id=btnFindAddress_1");
        }    }
}