private string GetCustomerName(IUserIO io)
{
//TODO: Move to UI
string userIn;
bool firstTime = true;
do
{
if (!firstTime)
{
io.WriteLine("Invalid input. Names may only contain letters, numbers, spaces, commas, and periods.");
}
userIn = io.GetString("Please enter your name.");
firstTime = false;
} while (!userIn.All(c => Char.IsLetterOrDigit(c) || c == ' ' || c == ',' || c == '.'));
return(userIn);
}