inserting texbox value based on checkbox selected WPF

Question

hi
I have wpf MVVM application I have a view which contain a checkbox if slected a bunch of textboxes will be displayed in the same view I got several other textboxes that will be automatically be inserted into database.
I need an approach that will enable me to determine if check box is selected insert the textboxes value along side the automatically inserted value I'll be using stored procedure.
any help will be appreciated