wpf - Activate UIElement on textbox from code behind -

I have a custom WPF keyboard that I use for input in my application

  Xmlns: WpfKb = "clr-namespace: WpfKb.Controls; assembly = WpfKb"  

and resourced in

In my XML-code, I use the following code to activate:

Now I have to add the code behind it, but I do not know where ro is starting to appear.

  text box channel name = new text box (); ChannelName.Style = (MyView.TryFindResource ("PmEditTextBox") style); ChannelName.Width = 300;  

FloatingTouchScreenKeyboardclass has been defined as

  public partial class FloatingTouchScreenKeyboard: System.Windows.Controls.Primitives.Popup {public static read-only DependencyProperty AreAnimationsEnabledProperty = DependencyProperty.Register ("Animation enabled", typef (boole), typef (floating touch screen screen), new UIPpropy metadata (true)); Public dependency property for stable reading Aiselawardtofedproprti = dependence Proprtikniyntrn ( "Aiseld sweet Fed" Taipf (bool), Taipf (Flotingtucskrinkiboard), New Uaipiprotimatetata (true)); Dependency reversion idragging property = dependency property for public static reading. Registrar ("Isdraiging", typef (boole), typef (floatingtouchchunkenboard), new UIPprotamatitata (false)); Public static DependencyProperty only read IsDragHelperAllowedToHideProperty = DependencyProperty.Register ( "IsDragHelperAllowedToHide", typeof (bool), typeof (FloatingTouchScreenKeyboard), New UIPropertyMetadata (false)); Public static dependencies to read property Aikebaerdshaunproprti = dependence Proprtikniyntrk ( "Iskiboardsoun" Taipf (bool), Taipf (Flotingtucskrinkiboard), New Uaipiproti metadata (true)); Public static read-only dependency property maximum keyboard opcityproperty = dependency credentials. Registrar ("maximum KBBopCity", typef (double), typef (floating touch screen screen), new UIPprotamatData (0.9D)); Public static DependencyProperty only read MinimumKeyboardOpacityProperty = DependencyProperty.Register ( "MinimumKeyboardOpacity", typeof (double), typeof (FloatingTouchScreenKeyboard), New UIPropertyMetadata (0.2d)); Dependency for public static readingPrint keyboardHeightDialPipty = DependencyProperty Registration ("KeyboardHydilele", Typef (Double), Typef (FloatingTouchScreenKeyboard), New UIPProtimatData (5D)); Public static DependencyProperty only read KeyboardHideAnimationDurationProperty = DependencyProperty.Register ( "KeyboardHideAnimationDuration", typeof (double), typeof (FloatingTouchScreenKeyboard), New UIPropertyMetadata (0.5d)); Public static Readonly DependencyProperty KeyboardShowAnimationDurationProperty = DependencyProperty.Register ("KeyboardShowAnimationDuration", typeof (double), typeof (FloatingTouchScreenKeyboard), New UIPropertyMetadata (0.5d)); Public stable read-only dependency deployment DeadZoneProperty = Dependency Property. Controls ("Deadzone", Typef (Double), Typef (FloatingTouchScreenKeyboard), New UIPProtimatData (5D));  

Any suggestion would be appreciated.