Custom Control switching between two styles

I'm making a custom control which has two very different styling needs. One for a basic look, and another for a more advanced look.

My control contains a dependency property for the following enum:

public enum ControlTypes
{
    Basic,
    Advanced
}

I created two styles in the generic.xaml (with very different templates), and gave each a key.

Inside the change handler for the enum property I'm trying to find the styles and set the correct one.

private stat开发者_如何学运维ic void OnControlTypePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
    var myCustomControl = (MyCustomControl)d;

    var basicControlStyle = Application.Current.TryFindResource("BasicControlStyle") as Style;
    var advancedControlStyle = Application.Current.TryFindResource("AdvancedControlStyle") as Style;

    if (myCustomControl.ControlType == ControlTypes.Basic)
        myCustomControl.Style = basicControlStyle;
    else if (myCustomControl.ControlType == ControlTypes.Advanced)
        myCustomControl.Style = advancedControlStyle;            
}

The two styles are always null. I'm not sure how to get the styles from inside the generic.xaml. Or is there a better way to swap my styles?

Delete the code in OnControlTypePropertyChanged and put something like this in your XAML. Note that I have bound to a property called IsAdvanced because it was simpler for testing but you can bind to an enum by changing the "True" for {x:Static namespace:nameofyourenum.Value}

<Style TargetType="local:SomeControl">
    <Style.Setters>
        <Setter Property="Control.Template">
            <Setter.Value>
                <ControlTemplate TargetType="local:SomeControl">
                    <StackPanel>
                        <TextBlock Text="DefaultTemplate"></TextBlock>
                    </StackPanel>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style.Setters>
    <Style.Triggers>
        <Trigger Property="IsAdvanced" Value="True">
            <Trigger.Setters>
                <Setter Property="Control.Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="local:SomeControl">
                            <TextBlock Text="Advanced Template"></TextBlock>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
            </Trigger.Setters>
        </Trigger>
    </Style.Triggers>
</Style>

Note that this still give the programmer who uses your control the ability to completely override the control template and do what they want. Your original approach didn't allow this.