Selenium UI Testing: TestCleanup() quits rest of the tests after the first test is loaded

I am automating my github profile and Following are my test cases:

• Load Browser (this is defined in testInitialize()
• Load Url
• Perform Login Below is the code snippet:

namespace GitAutomationTest { using Microsoft.VisualStudio.TestTools.UnitTesting; using OpenQA.Selenium.IE; using OpenQA.Selenium.Remote; using System; [TestClass] public class GitTest { private string baseURL = "http://ift.tt/1i4HFM7"; private RemoteWebDriver driver; public TestContext TestContext { get; set; }

     [TestMethod]
     public void LoadURL() {
            driver.Navigate().GoToUrl(baseURL);
            Console.Write("Loaded URL is :" + baseURL);
        }
        [TestMethod]
        public void PerformLogin() { 
            driver.FindElementById("login_field").SendKeys("USERNAME");
            driver.FindElementById("password").SendKeys("PASSWORD");
            Console.Write("password entered \n ");
            driver.FindElementByClassName("btn-primary").Click();
            driver.GetScreenshot().SaveAsFile(@"screenshot.jpg", format: System.Drawing.Imaging.ImageFormat.Jpeg);
            Console.Write("Screenshot Saved: screenshiot.jpg");
        }
        [TestCleanup()]
        public void MyTestCleanup()
        {
            driver.Quit();
        }
        [TestInitialize()]
        public void MyTestInitialize()
        {
            driver = new InternetExplorerDriver();
            driver.Manage().Window.Maximize();
            Console.Write("Maximises The window\n");
            driver.Manage().Timeouts().ImplicitlyWait(TimeSpan.FromSeconds(20));
        }
    }
}

OUTPUT
Everytime I run all tests: - Test is initialized : the internet explorer is loaded - The base url is loaded - Then the driver quits with TestCleanUP()

Next time the driver runs testperformLogin() - The test cannot find the username and password elements to perform login, because the base url is not loaded this time.

How can we manage the TestInitialize() class such that: - browser is up with baseurl until all the tests are completed. How can we manage TestCleanup() such that: - browser closes only after all the test are completed.