从另一个XAMLS处理故事板

Question

我正在尝试使用5个XAMLS构建Silverlight应用程序。 第一个“Page.xaml”包含一个带有4个按钮的菜单和一个Canvas来接收每个内容的XAML。每个内容XAML有2个故事板：“entrada”（“输入部分”动画）和“说出”（结束动画的部分）。

我遇到了以下问题： 菜单位于Page.xaml中。我希望每个按钮在单击时开始“说出”故事板，并且当故事板完成播放时，它会加载另一个XAML的新内容（由菜单选取）。当我尝试这样做时，Visual Studio会一直告诉我，对于每个内容XAML，“ContentCanvas”在当前上下文中不存在“。

这里是我的Page.xaml.cs：

using System; 
using System.Windows; 
using System.Windows.Controls; 
using System.Windows.Documents; 
using System.Windows.Ink; 
using System.Windows.Input; 
using System.Windows.Media; 
using System.Windows.Media.Animation; 
using System.Windows.Shapes; 

namespace SilverlightPagingSystemProject 
{ 
    public partial class Page : UserControl 
    { 
     String secao = "home"; 
     Section1 s1 = new Section1(); 
     Section2 s2 = new Section2(); 
     Section3 s3 = new Section3(); 

     public Page() 
     { 
      // Required to initialize variables 
      InitializeComponent(); 
      Link1.MouseLeftButtonDown += new MouseButtonEventHandler(Link1_MouseLeftButtonDown); 
      Link2.MouseLeftButtonDown += new MouseButtonEventHandler(Link2_MouseLeftButtonDown); 
      Link3.MouseLeftButtonDown += new MouseButtonEventHandler(Link3_MouseLeftButtonDown); 
     } 

     private void Link1_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) 
     { 
      if (secao == "home") 
      { 
       ContentCanvas.Children.Remove(s1); 
       ContentCanvas.Children.Remove(s2); 
       ContentCanvas.Children.Remove(s3); 
       ContentCanvas.Children.Add(s1); 
      } 
      else 
      { 
       ContentCanvas.saida.Begin(); 
      } 
     } 

     private void Link2_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) 
     { 
      if (secao == "home") 
      { 
       ContentCanvas.Children.Remove(s1); 
       ContentCanvas.Children.Remove(s2); 
       ContentCanvas.Children.Remove(s3); 
       ContentCanvas.Children.Add(s2); 
      } 
      else 
      { 
       ContentCanvas.saida.Begin(); 
      } 
     } 

     private void Link3_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) 
     { 
      if (secao == "home") 
      { 
       ContentCanvas.Children.Remove(s1); 
       ContentCanvas.Children.Remove(s2); 
       ContentCanvas.Children.Remove(s3); 
       ContentCanvas.Children.Add(s3); 
      } 
      else 
      { 
       ContentCanvas.saida.Begin(); 
      } 
     } 
    } 
} 

这是我的部分XAML。他们都是一样的。

using System; 
using System.Windows; 
using System.Windows.Controls; 
using System.Windows.Documents; 
using System.Windows.Ink; 
using System.Windows.Input; 
using System.Windows.Media; 
using System.Windows.Media.Animation; 
using System.Windows.Shapes; 

namespace SilverlightPagingSystemProject 
{ 
    public partial class Section3 : UserControl 
    { 
     public Section3() 
     { 
      // Required to initialize variables 
      InitializeComponent(); 
      Section3LayoutRoot.Loaded += new RoutedEventHandler(Section1LayoutRoot_Loaded); 
      saida.Completed += new EventHandler(saida_Completed); 
     } 

     void saida_Completed(object sender, EventArgs e) 
     { 
      this.Parent.ContentCanvas.Children.Remove(s1); 
      this.Parent.ContentCanvas.Children.Remove(s2); 
      this.Parent.ContentCanvas.Children.Remove(s3); 
      this.Parent.ContentCanvas.Children.Add(secao); 
     } 

     void Section1LayoutRoot_Loaded(object sender, RoutedEventArgs e) 
     { 
      entrada.Begin(); 
     } 
    } 
} 

感谢您的帮助！

Answer 1

如果我没有弄错，通过引用this.Parent获得的对象实际上应该是ContentCanvas对象。因此，尝试改变

this.Parent.ContentCanvas.Children.Remove(s1); 

到

((Canvas)this.Parent).Children.Remove(s1); 

假设ContentCanvas其实画布。