/// <summary>
/// Check if Element contains specified attribute.
/// </summary>
/// <param name="attributeName">The name of the attribute to look for</param>
/// <returns>true if attribute exists false otherwise</returns>
public bool HasAttribute(string attributeName)
{
if (string.IsNullOrEmpty(attributeName))
{
throw new ArgumentException("attributeName");
}
return(DomElement.HasAttribute(new nsAString(attributeName)));
}
