FrameworkElement.RegisterName(String, Object) Metod

public:
 void RegisterName(System::String ^ name, System::Object ^ scopedElement);

public void RegisterName(string name, object scopedElement);

member this.RegisterName : string * obj -> unit

Public Sub RegisterName (name As String, scopedElement As Object)

Parametrar

Exempel

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace Microsoft.Samples.Animation.AnimatingWithStoryboards
{

    public class ScopeExample : Page
    {
        
        private Storyboard myStoryboard;
        private StackPanel myMainPanel;
        private Button button1, button2;
        
        public ScopeExample()
        {
        
            this.Background = Brushes.White; 
            myMainPanel = new StackPanel();
            
            // Create a name scope for the stackpanel. 
            NameScope.SetNameScope(myMainPanel, new NameScope());
            
            myMainPanel.Background = Brushes.Orange;
              
            button1 = new Button();
            button1.Name = "Button1";
            
            // Register button1's name with myMainPanel.
            myMainPanel.RegisterName(button1.Name, button1);
            button1.Content = "Button 1";
            button1.Click += new RoutedEventHandler(button1Clicked);
            myMainPanel.Children.Add(button1);
            
            button2 = new Button();
            button2.Name = "Button2";
            
            // Register button2's name with myMainPanel.
            myMainPanel.RegisterName(button2.Name, button2);
            button2.Content = "Button 2";
            button2.Click += new RoutedEventHandler(button2Clicked);
            myMainPanel.Children.Add(button2);

            // Create some animations and a storyboard.
            DoubleAnimation button1WidthAnimation = 
                new DoubleAnimation(300, 200, new Duration(TimeSpan.FromSeconds(5)));
            Storyboard.SetTargetName(button1WidthAnimation, button1.Name);
            Storyboard.SetTargetProperty(button1WidthAnimation, new PropertyPath(Button.WidthProperty));

            DoubleAnimation button2WidthAnimation = 
                new DoubleAnimation(300, 200, new Duration(TimeSpan.FromSeconds(5)));
            Storyboard.SetTargetName(button2WidthAnimation, button2.Name);
            Storyboard.SetTargetProperty(button2WidthAnimation, new PropertyPath(Button.WidthProperty));
            
            DoubleAnimation heightAnimationWithoutTarget = 
                new DoubleAnimation(300, 200, new Duration(TimeSpan.FromSeconds(5)));
            Storyboard.SetTargetProperty(heightAnimationWithoutTarget, new PropertyPath(FrameworkElement.HeightProperty));                
            
            myStoryboard = new Storyboard();
            myStoryboard.Children.Add(button1WidthAnimation);
            myStoryboard.Children.Add(button2WidthAnimation);
            myStoryboard.Children.Add(heightAnimationWithoutTarget);
            
            this.Content = myMainPanel;
        }  

        private void button1Clicked(object sender, RoutedEventArgs args)
        {
        
            // Starts the animations. The animation without a specified 
            // target name, heightAnimationWithoutTarget, is applied to
            // myMainPanel.
            myStoryboard.Begin(myMainPanel);
        }
        
        private void button2Clicked(object sender, RoutedEventArgs args)
        {
        
            // Starts the animations. The animation without a specified 
            // target name, heightAnimationWithoutTarget, is applied to
            // button2.
            myStoryboard.Begin(button2);
        }        
    }
}

Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Media.Animation
Imports System.Windows.Shapes

Namespace Microsoft.Samples.Animation.AnimatingWithStoryboards




    Public Class ScopeExample
        Inherits Page

        Private myStoryboard As Storyboard
        Private myMainPanel As StackPanel
        Private button1, button2 As Button

        Public Sub New()

            Me.Background = Brushes.White
            myMainPanel = New StackPanel()

            ' Create a name scope for the stackpanel. 
            NameScope.SetNameScope(myMainPanel, New NameScope())

            myMainPanel.Background = Brushes.Orange

            button1 = New Button()
            button1.Name = "Button1"

            ' Register button1's name with myMainPanel.
            myMainPanel.RegisterName(button1.Name, button1)
            button1.Content = "Button 1"
            AddHandler button1.Click, AddressOf button1Clicked
            myMainPanel.Children.Add(button1)

            button2 = New Button()
            button2.Name = "Button2"

            ' Register button2's name with myMainPanel.
            myMainPanel.RegisterName(button2.Name, button2)
            button2.Content = "Button 2"
            AddHandler button2.Click, AddressOf button2Clicked
            myMainPanel.Children.Add(button2)


            ' Create some animations and a storyboard.
            Dim button1WidthAnimation As New DoubleAnimation(300, 200, New Duration(TimeSpan.FromSeconds(5)))
            Storyboard.SetTargetName(button1WidthAnimation, button1.Name)
            Storyboard.SetTargetProperty(button1WidthAnimation, New PropertyPath(Button.WidthProperty))

            Dim button2WidthAnimation As New DoubleAnimation(300, 200, New Duration(TimeSpan.FromSeconds(5)))
            Storyboard.SetTargetName(button2WidthAnimation, button2.Name)
            Storyboard.SetTargetProperty(button2WidthAnimation, New PropertyPath(Button.WidthProperty))

            Dim heightAnimationWithoutTarget As New DoubleAnimation(300, 200, New Duration(TimeSpan.FromSeconds(5)))
            Storyboard.SetTargetProperty(heightAnimationWithoutTarget, New PropertyPath(FrameworkElement.HeightProperty))

            myStoryboard = New Storyboard()
            myStoryboard.Children.Add(button1WidthAnimation)
            myStoryboard.Children.Add(button2WidthAnimation)
            myStoryboard.Children.Add(heightAnimationWithoutTarget)

            Me.Content = myMainPanel

        End Sub


        Private Sub button1Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)

            ' Starts the animations. The animation without a specified 
            ' target name, heightAnimationWithoutTarget, is applied to
            ' myMainPanel.
            myStoryboard.Begin(myMainPanel)

        End Sub

        Private Sub button2Clicked(ByVal sender As Object, ByVal args As RoutedEventArgs)

            ' Starts the animations. The animation without a specified 
            ' target name, heightAnimationWithoutTarget, is applied to
            ' button2.
            myStoryboard.Begin(button2)

        End Sub

    End Class


End Namespace

Kommentarer

Den här metoden är en bekvämlighetsmetod för att anropa RegisterName. Implementeringen kontrollerar efterföljande överordnade element tills den hittar den tillämpliga NameScope implementeringen, som hittas genom att hitta ett element som implementerar INameScope. Mer information om namescopes finns i WPF XAML Namescopes.

Det är nödvändigt att anropa RegisterName för att korrekt ansluta animeringsberättelser för program när de skapas i kod. Det beror på att en av nyckelegenskaperna för storyboard, TargetName, använder ett uppslag för körningsnamn i stället för att kunna ta en referens till ett målelement. Detta gäller även om elementet är tillgängligt med referens från koden. Mer information om varför du behöver registrera namn för storyboardmål finns i Översikt över Storyboards.

Se även

• RegisterName(String, Object)