Select each option in a drop down using Selenium WebDriver C#

Question

I'm not able to select options in a drop down list. I think I need to have .Select or SelectElement, but there is no such option.

Sample code:

IWebDriver ffbrowser = new FirefoxDriver();
ffbrowser.Navigate().GoToUrl("http://www.amazon.com/");
ffbrowser.Manage().Window.Maximize();

Thread.Sleep(500);

IWebElement ddl = ffbrowser.FindElement(By.Name("url"));
int numofitems = ddl.FindElements(By.TagName("option")).Count;

for (int i = 1; i < numofitems; i++)
{
    ffbrowser.select("TagName = option", "index = i");
}

The "select" in "ffbrowser.select" is reported as an error:

Error 1 'OpenQA.Selenium.IWebDriver' does not contain a definition for 'select' and no extension method 'select' accepting a first argument of type 'OpenQA.Selenium.IWebDriver' could be found (are you missing a using directive or an assembly reference?)

My project references include Selenium.WebDriverBackedSelenium, Thoughtworks.Selenium.Core, WebDriver, WebDriver.Support

and I have

using NUnit.Framework;
using OpenQA.Selenium;
using OpenQA.Selenium.Chrome;
using OpenQA.Selenium.Firefox;
using OpenQA.Selenium.IE;
using OpenQA.Selenium.Support.UI;

Answer 1

Depending what version of Selenium WebDriver you are using you can use the SelectElement class, which will be included in OpenQA.Selenium.Support.UI.
For example:

SelectElement selector = new SelectElement(element);
selector.SelectByIndex(1);

Where the element is your drop down box.