protected virtual bool IsEmpty(System.Windows.Forms.Control input, object value)
{
EvaluateIsEmptyEventArgs args = new EvaluateIsEmptyEventArgs(input, value, this);
OnEvaluateIsEmpty(args);
if (args.IsEmptySet) return args.IsEmpty;
if (value == null) return true;
if (value is string)
{
if (_IsEmptyStringValid)
return value == null;
else
return string.IsNullOrEmpty((string)value);
}
else if ((input is ComboBox || input is DevComponents.DotNetBar.Controls.ComboTree) && value is int)
return ((int)value) < 0;
return false;
}
/// <summary>
/// Raises EvaluateIsEmpty event.
/// </summary>
/// <param name="args">Event Arguments</param>
protected virtual void OnEvaluateIsEmpty(EvaluateIsEmptyEventArgs args)
{
EvaluateIsEmptyEventHandler h = EvaluateIsEmpty;
if (h != null) h(this, args);
}