Hi Yanko,

Thank you for your response.

I am not trying to validate the masked input, what I am trying to do is to inform the user what he/she should put in.

For example, if the mask for a textbox is #####, it only accepts numbers, when the user keys in letters, the textbox will not accept the user's input, but I would like to inform the user that this textbox only accept numbers. I was thinking to display the error message to let the user know.

Thanks.

Hello,

I am just checking if you require any further assistance on the matter.

Hi,

Thank you for your reply. I have been looking into your scenario and I can suggest you put a hidden Textblock near to the XamMaskedInput and makes it visible when the input is focused by handling the GotFocus and LostFocus events like e.g. :

<Editors:XamMaskedInput x:Name="maskedEditor" Mask="(###) ###-####" Grid.Column="0" Height="25" Width="100" Text="{Binding PhoneNumber}" GotFocus="maskedEditor_GotFocus_1" LostFocus="maskedEditor_LostFocus_1" >

 <Editors:XamMaskedInput.ValueConstraint>

 <Editors:ValueConstraint MaxLength="10" />

 </Editors:XamMaskedInput.ValueConstraint>

 </Editors:XamMaskedInput>

 <TextBlock Visibility="Collapsed" Width="100" Height="25" Foreground="Red"x:Name="txtBlock" Grid.Column="1">Please use only digits</TextBlock>

 private void maskedEditor_GotFocus_1(object sender, RoutedEventArgs e)

{

 this.txtBlock.Visibility = Windows.UI.Xaml.Visibility.Visible;

}

 private void maskedEditor_LostFocus_1(object sender, RoutedEventArgs e)

{

 this.txtBlock.Visibility = Windows.UI.Xaml.Visibility.Collapsed;

}

Please let me know, if you need any further assistance on this matter