Home / Community & Support / Developer Productivity Tools Forums / Silverlight > MaskedTextBox > Partial number masking

• Jason Maronge Master

  Posted on Dec 8, 2011 (permalink)

  Does anyone know how to accomplish partial number masking.  For example, I am trying to mask the display of a SSN and Credit Card but still allowing the user to re-input the whole number.
  
  I have a
  
  

  <telerik:RadMaskedTextBox x:Name="SSN"

  Grid.Row="2"

  Grid.Column="3"

  Width="100"

  Margin="2"

  HorizontalAlignment="Left"

  VerticalAlignment="Center"

  Mask="###-##-####"

  SelectionOnFocus="SelectAll"

  MaskType="Standard"

  Value="{Binding DataContext.SSN,
                     ElementName=View,

  Mode=TwoWay,

  NotifyOnValidationError=True,

  ValidatesOnNotifyDataErrors=True}" >
</telerik:RadMaskedTextBox>

  
  
  I would like to have a mask when the user views it to be like "***-**-####" but still allow them to put in all 9 numbers.  Is this possible?  It would be the same problem with displaying credit card numbers.  I need to be able to only show the last X number of digits but allow for entry of the whole number.
  
  I believe I saw an example of the ASP.Net MaskedTextBox with it using a DisplayMask.  I know it may not be supported with the control itself, but is there a way to do it using a Converter?  I have tried but have not succeeded yet.
  
  Any help is greatly appreciated.
  
  Jason
  

  Reply

• Alex Fidanov Alex Fidanov

  Posted on Dec 13, 2011 (permalink)

  Hi Jason Maronge,
  
  I am not sure I understand your scenario completely. Do you wish to replace the numbers that are already filled in by asterics and leave the empty spaces (something like a password box)? Or do you want to see something like "123-45-XXXX" where the X-s are the empty positions? If it is the latter, you can change the Placeholder property of the masked control to "X" or "#" and replace the default "_" placeholder.
  
  Regards,
  Alex Fidanov
  the Telerik team

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  Reply

• Jason Maronge Master

  Posted on Mar 20, 2012 (permalink)

  What I need to do is to have the mask show to the users like "***-**-6543" but still have it give me all 9 numbers (795606543). It is a bound control so I need to get the whole SSN on the backend.   If I use the mask "***-**-####" all I get on the backend is the last 4 digits. 
  
  The user is allowed to type all 9 digits but will only see the last 4.  Using the * stops me from getting the first 5 numbers of the SSN.
  
  I actually found a way to get this to work without databinding to the control by manipulating 3 variables and the mask in the background, but now I need to have it bound and can't get it to work.
  
  Hope this makes sense. 

  Reply

• Tina Stancheva Tina Stancheva

  Posted on Mar 23, 2012 (permalink)

  Hi Jason,
  
  Unfortunately the MaskedTextBox and MaskedInput controls doesn't support such scenarios. You can instead try creating a custom control using the MS PasswordBox for the first part of the SSN and the MaskedTextInput control for the last four digits.
  
  Kind regards,
  Tina Stancheva
  the Telerik team

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  Reply

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