.NET Framework 4.6 and 4.5
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.
Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0
.NET Framework Client Profile
Supported in: 4, 3.5 SP1