WPF: Custom control property was already registered by another custom control error

Question

I created two custom controls that are exactly the same except that they are of two different types.

ControlOne

public class ControlOne : TextEdit
    {
        public static readonly DependencyProperty AwesomeSauceProperty =
         DependencyProperty.Register("AwesomeSauce", typeof(string), typeof(FormTextEditInput));           

        public string AwesomeSauce
        {
            get { return GetValue(AwesomeSauceProperty) as string; }
            set { SetValue(AwesomeSauceProperty, value); }
        }

    }

ControlTwo

public class ControlTwo : PasswordEdit
        {
            public static readonly DependencyProperty AwesomeSauceProperty =
             DependencyProperty.Register("AwesomeSauce", typeof(string), typeof(FormTextEditInput));           

            public string AwesomeSauce
            {
                get { return GetValue(AwesomeSauceProperty) as string; }
                set { SetValue(AwesomeSauceProperty, value); }
            }

        }

And in XAML i simply do this

<controls:ControlOne AwesomeSauce="Yummy"/>
<controls:ControlTwo AwesomeSauce="Tummy"/>

and I get error

System.ArgumentException
'AwesomeSauce' property was already registered by 'ControlOne'.

You may be asking why I need two controls that do the same things, I can just create Data Templates and move on. But I want to be stubborn and say that I need custom controls of different types that do the same thing. It be nice if I could use custom controls of a generic type, but I found out that that is not possible (right?).

I also don't want to use different names because that would just be a hack to the problem.

I just want my two controls to be able to use the same names for their dependency properties. Is there something I'm missing here? or I'm I just flat out not allowed to use the same names?

I'm guessing that attached properties would be the solution for this, but I really want to push for a custom control.

Answer 1

The third parameter ownerType of the DependencyProperty.Register method must be the type of the class that registers the property, i.e. ControlOne and ControlTwo in your case:

public class ControlOne : TextEdit
{
    public static readonly DependencyProperty AwesomeSauceProperty =
        DependencyProperty.Register("AwesomeSauce", typeof(string), typeof(ControlOne));
    ...
}

public class ControlTwo : TextEdit
{
    public static readonly DependencyProperty AwesomeSauceProperty =
        DependencyProperty.Register("AwesomeSauce", typeof(string), typeof(ControlTwo));
    ...
}