why do i get AdhocTestMethod name for test in c# selenium

Question

I work with c# and selenium nunit I decalred test method and when i want to get the name I get 'AdhocTestMethod'

 [TestClass]
    public class tryTest : SeleniumTestBase
    {
        [TestMethod]
        public void CreateTaskTest()
        {

            IWebElement mail = driver.FindElement(By.Name("phoneOrMail"));
            mail.SendKeys("Kesher.zipi@gmail.com");

        }
    }

[TestFixture]
        public abstract class SeleniumTestBase
        {
            [SetUp]
            [TestInitialize]
            public virtual void TestSetup()
            {
                if (NUnit.Framework.TestContext.CurrentContext.CurrentRepeatCount == 0)
                {
                    if (reportingManager == null)
                        reportingManager = new ReportingManager();
                    string testMethodName = NUnit.Framework.TestContext.CurrentContext.Test.Name;
                    _reportingTasks = new ReportingTasks(ReportingManager.Instance);
                    //     _reportingTasks.InitializeTest();
                }
            }
        }

I tried to look for solutions in google but i didn't find any solution