/// <summary>
/// Gets the value of this object as a string.
/// Throws an exception if the value is not a string.
/// </summary>
/// <returns></returns>
public string AsString()
{
string s = PiLib.GetString(Pi.Handle, Name);
if (s == null)
{
throw new InvalidOperationException($"The object {Name} is not a string.");
}
return(s);
}
