InputMethod.IsInputMethodEnabled Attached Property
Gets or sets a value that determines whether input method editors can be used to provide input for the control where the property is attached.
Assembly: System.Windows (in System.Windows.dll)
Dependency property identifier field: IsInputMethodEnabledProperty
The attached property is used to disable input method editors for the special case of a text box control being used as a password box.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.