I am trying to format a social security number displayed on a Win form.  The
text box that holds the ssn is bound to a data set.  I tried the code below
in the form's OnLoad event; however, it doesn't work.

        Binding ssnBinding;
        ssnBinding = sSNTextBox.DataBindings["Text"];
        ssnBinding.FormatString = "000'-'00'-'0000";
        ssnBinding.FormattingEnabled = true;

Any help will be greatly appreciated.  Thanks.