<Grid x:Name="LayoutRoot"> <ig:XamSpellChecker x:Name="spellChecker"> <ig:XamSpellChecker.SpellCheckTargets> <!-- Where txtSpellCheck in the name of the input control --> <Binding ElementName="txtSpellCheck" Path="Text" Mode="TwoWay" NotifyOnValidationError="True" ValidatesOnExceptions="True"></Binding> </ig:XamSpellChecker.SpellCheckTargets> </ig:XamSpellChecker> … </Grid>