The methods and properties for changing the selected entry on multiselect HTML list boxes only allow you to select one entry. There is no simple way to perform a Select All action.

To work around this limitation, use the ExecuteScript method off of the webpage. To do this, your list box must meet these requirements:

• It must be an HTML Select element
• It must have an ID

If you run the following script in an ExecuteScript method call, the system selects all of the list box items:

var listbox = document.getElementById("elementid");
var options = listbox.options;

for (var index = 0; index < options.length; index++)
{
    options[index].selected = true;
}

For more information on the ExecuteScript method, see Webpage properties, methods, and events.