public void DragAndDropIWebElementTest()
{
var elementActions = new ElementActions(Driver);
Driver.Url = "http://the-internet.herokuapp.com/";
elementActions.Click(By.XPath("//a[text()='Drag and Drop']"));
Assert.AreEqual("A", Driver.FindElement(By.XPath("//div[@id='columns']/div[1]/header")).Text);
elementActions.DragAndDrop(Driver.FindElement(By.Id("column-a")), Driver.FindElement(By.Id("column-b")));
Assert.AreEqual("B", Driver.FindElement(By.XPath("//div[@id='columns']/div[1]/header")).Text, "The boxes didn't drag and drop.");
}