BasicElementsOperations.cs

IWebElement element = driver.FindElement(By.Id("id"));
element.Click();
element.SendKeys("someText");
element.Clear();
element.Submit();
string innerText = element.Text;
bool isEnabled = element.Enabled;
bool isDisplayed = element.Displayed;
bool isSelected = element.Selected;
IWebElement element = driver.FindElement(By.Id("id"));
SelectElement select = new SelectElement(element);
select.SelectByIndex(1);
select.SelectByText("Ford");
select.SelectByValue("ford");           
select.DeselectAll();
select.DeselectByIndex(1);
select.DeselectByText("Ford");
select.DeselectByValue("ford");
IWebElement selectedOption = select.SelectedOption;
IList<IWebElement> allSelected = select.AllSelectedOptions;
bool isMultipleSelect = select.IsMultiple;