I have a button defined as a resource within a ControlTemplate in order to be able to use it more than once.

<Grid.Resources>
   <ControlTemplate x:Key="GenericButton">
       <Button Text="Click Here"
                IsEnabled="{Binding SelectedItemProperty,
                           Converter={StaticResource IsNotNullConverter}}" />
   </ControlTemplate>
</Grid.Resources>

I would like the button to be a little more dynamic and receive the SelectedItemProperty name as a parameter instead.

Currently, I’m displaying the resource button in this fashion (which works fine as long as the SelectedItemProperty name is concretely spelled out as seen in the above code):

<VerticalStackLayout Padding="20" Spacing="20" VerticalOptions="Fill">
   <ContentView ControlTemplate="{StaticResource GenericButton}" />
</VerticalStackLayout>

Instead, I would like to do something like this:

<ContentView ControlTemplate="{StaticResource GenericButton, Parameter=SelectedItemProperty}" />

And the resource button would look something like this:

<ControlTemplate x:Key="GenericButton">
   <Button Text="Click Here"
            IsEnabled="{Binding PassedParameter,
                       Converter={StaticResource IsNotNullConverter}}" />
</ControlTemplate>

What is that concept of passing a parameter between Controls called? And how to approach this problem?