Disabling State of Checkbox based on other controls(TextBox & ComboBox)

See more:

WPF

Hi,


I have a window in WPF, which hv, these entities, Duplex printing Checkbox, No. of Pages Textbox & ComboBox Selections and Button for Print,
Let us assume, based on Checkbox selection the user needs to disable the Textbox., ie., on Checkbox checked state(true), I will disable the Textbox and ComboBox using the Boolean Inverter logic ., by usage of IValueConverter.(Already existing implemented for TextBox and ComboBox relative to Checkbox)

But in addition,
Query 1. What if I need to disable the Checkbox too(ie., Checkbox is UnChecked State), when contents in Textbox/Combo Box already implemented as above are changed by user. So that subsequent operation on click of Print Button is forbidden after Check option on Checkbox by user.

Query 2. How to effectively handle the TextBox Contents change status analogous to ComboBox "IsSelectionChanged" ie., Is there any other functionality for Change of contents in TextBox ?

Thanks in Advance...

With Regards,
Samanth_90