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I have a WPF Login window with a username, password textbox & 7 textboxes for OTP since OTP is 7 digits long.
How to bind the ViewModel property "LoginOTP" to these 7 OTP textboxes on the Login View.

Should I create 7 different OTP properties in the ViewModel?

What I have tried:

I suggested changing the 7 textboxes to one but the client wants it to be 7 different textboxes to indicate the user to enter all 7 digits of the OTP
Posted
Updated 31-Jan-23 9:37am

1 solution

I would make a UserControl that would bind to a property on the ViewModel and internally split the string into the 7 parts, each bound to the 7 TextBoxes. To the ViewModel, it would appear to be a single binding, like a single TextBox. The validation can still be done via the ViewModel.
 
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