>I have a WinForms application that has 2 RadioButtons (inside a Group Box).
>One button is for Yes and the other button is for No.
>How might I bind these to a SQL Server Char(1) field having values of 'Y' and 'N'?

The obvious solution would be to convert your Y/N fields to bit and handle the Y/N in your output if and when you have to, but I imagine that's not possible.

If you are using a view, you might try something like:

SELECT ... 
CAST(CASE WHEN UPPER(MyField) = 'Y' THEN 1
          WHEN UPPER(MyField) = 'N' THEN 0
          ELSE NULL 
     END AS Bit) AS MyField FROM ...

You'll have to write additional code to handle updates when the user clicks on one of your buttons.

Just out of curiosity, why would you want to use 2 radiobuttons instead of one checkbox?

HTH

BR