Prism Command Binding using Parameter?

Here is a complete solution that worked for me:

  1. Use CommandParameter (as per Dmitry - Spasiba!)

    <TextBlock>
        <Hyperlink CommandParameter="{Binding PersonSelected.PersonKnown2ID}"
                   Command="{Binding NavHomeViewCommand}" >
            <Run Text="{Binding PersonSelected.PersonKnownName2}" />
        </Hyperlink>
    </TextBlock>
    
  2. Change DelegateCommand to use object parameter

    navHomeViewCommand = new DelegateCommand<object>(NavHomeView);
    
  3. Command Properties remain unchanged but method changed to use parameter:

    private readonly ICommand navHomeViewCommand;
    public ICommand NavHomeViewCommand
    {
        get { return navHomeViewCommand; }
    }
    
    private void NavHomeView(object ID)
    {
        int val = Convert.ToInt32(ID);
        var parameters = new NavigationParameters();
        parameters.Add("To", val);
       _regionManager.RequestNavigate("MainRegion", new Uri("HomeView", UriKind.Relative), parameters);
    }
    

You can use 'CommandParameter' property of the Hyperlink.

 <Hyperlink Command="{Binding NavHomeViewCommand}" CommandParameter="1" >
       <Run Text="{Binding PersonSelected.PersonKnownName}" />
 </Hyperlink>