Hi

Here is what I am trying to achieve is to make the text fill the mask from the right rather than from the left.

If my mask is #(###)###-#### and my Prompt Char is _, Then this is what I expect to happen 

If I enter 11 digit number I expect to show (1)(222)-333-4444. If I enter 10 digit number I expect to show _(222)-333-4444.

The API for the Masked Text Box control has NumericRangeAlign property that should allow this to happen but setting this property value to RIGHT or LEFT has NO visible effect.