Occurs when the value of the AcceptsTab property has changed. This event is not raised by MaskedTextBox.
public event EventHandler AcceptsTabChanged
The AcceptsTabChanged event is inherited from the base TextBoxBase class. However, because the MaskedTextBox control does not support multiline configuration, this event is not supported.
AcceptsTabMultilineLinesMaskedTextBox ClassSystem.Windows.Forms Namespace