Ok, so I have gridview with IsReadOnly = True. I allow the user to expand the rowdetails and edit data using a raddataform. This the bound object for this form has dataannotations which are used to validate the record. Suppose I have a required field that is left blank. The form recognizes the problem and disables the save button, but I'm still allowed to navigate to another row. How to prevent this (mvvm style ... of course!)?
Thanks ... Ed