Unable to click the submenu in selenium webdriver - selenium-webdriver

Question

Mouse hover menu’s does not work. Please see further details below:-
When I click start --> I get the submenus.
When I click customer submenu--> element not clickable
a. I should be able to go to “Search for Customers” or “Create Top level Customer”
<div class="TidyMenu Horizontal" id="mainNav">
<ul class="level1">
<li><a class="popout level1" href="#" onclick="__doPostBack('ctl00$mainNav','Start')">Start</a>
<ul class="level2">
<li><a class="popout level2" href="#" onclick="__doPostBack('ctl00$mainNav','Start\\Customers')">Customers</a>
<ul class="level3">
<li><a title="Search for Customers" class="level3" href="#" onclick="__doPostBack('ctl00$mainNav','Start\\Customers\\3')">Search for Customers</a></li>
<li><a title="Create Top level Customer" class="level3" href="#" onclick="__doPostBack('ctl00$mainNav','Start\\Customers\\8')">Create Top level Customer</a></li>
</ul>
</li>
</ul>
</li>
<div>

Answer 1

Use Actions utility to first mouse hover on Start and then click on the desired sub menu. Sample code should look like below:
using OpenQA.Selenium;
using OpenQA.Selenium.Interactions;
using OpenQA.Selenium.Interactions.Internal;
using OpenQA.Selenium.Support.UI;
//create Actions object
Actions builder = new Actions(driver);
IWebElement menuHoverLink = driver.FindElement(By.XPath("//a[text()='Start']"));
builder.MoveToElement(menuHoverLink);
IWebElement subLink = driver.FindElement(By.LinkText("Customers"));
builder.MoveToElement(subLink);
builder.Click();
builder.Build().Perform();
Lemme know if this helps!

Answer 2

We can use the keys to move over and click, instead of trying with the mouse coordinates this is with the keyboard.
Please try this
Mousehover:
String hover=Keys.chord(Keys.DOWN);
driver.findElement(By.linkText("the text which has to be clicked")).sendKeys(hover);
Click:
String clickdown=Keys.chord(Keys.ENTER);
driver.findElement(By.linkText("sub menu which has to be clicked")).sendKeys(clickdown);