You could create the display you want by adding event handlers to the format and parse events of the textbox's databinding object. For an example, see the code for the textbox simple data binding sample at:

http://samples.gotdotnet.com/quickstart/winforms/

The VB sample is at:

http://samples.gotdotnet.com/quickstart/util/srcview.aspx?path=/quickstart/winforms/Samples/Data/SimpleBinding/SimpleBinding.src&file=VB\SimpleBinding.vb&font=3


C#:

http://samples.gotdotnet.com/quickstart/util/srcview.aspx?path=/quickstart/winforms/Samples/Data/SimpleBinding/SimpleBinding.src&file=CS\SimpleBinding.cs&font=3

>Hi.
>I have a text Box which I want '25AABCDE' to display as '25-AA-BCDE'
>In VFP, this is done using InputMask of : XX-XX-XXXX but I cant
> see anything similar in the Dot Net Properties box .
>
>Any help appreciated.
>
>Regards,
>Gerard