## Definition

Occurs synchronously when the text in the password box starts to change, but before it is rendered.

``public : event TypedEventHandler<PasswordBox, PasswordBoxPasswordChangingEventArgs> PasswordChanging``
``````// Register
``public event TypedEventHandler<PasswordBox, PasswordBoxPasswordChangingEventArgs> PasswordChanging``
``Public Event PasswordChanging As TypedEventHandler (Of PasswordBox, PasswordBoxPasswordChangingEventArgs)``
``````<PasswordBox PasswordChanging="eventhandler"/>