在后台代码中设定控件的Visibility

在不同情况下，显示不同的控件。

Case1：ToggleButton显示，Grid的Visibility通过ToggleButton的IsChecked属性绑定；

Case2：ToggleButton隐藏，Grid显示。

通过类型判断进入处理部分：

 1 public HelloWindow(WinType type)
 2 {
 3     winType = type;
 4 
 5     InitializeComponent();
 6 
 7     if (winType == WinType.Case1)
 8     {
 9         myToggleButton.Visibility = System.Windows.Visibility.Collapsed;
10         myGrid.Visibility = System.Windows.Visibility.Visible;
11     }
12     else if (winType == WinType.Case2)
13     {
14         myToggleButton.Visibility = System.Windows.Visibility.Visible;
15         Binding binding = new Binding()
16         {
17             ElementName = "myToggleButton",
18             Path = new PropertyPath("IsChecked"),
19             Converter = (BooleanToVisibilityConverter)this.FindResource("b2v"),
20             Mode = BindingMode.OneWay
21         };
22         myGrid.SetBinding(Grid.VisibilityProperty, binding);
23         // 或者使用静态方法
24         // BindingOperations.SetBinding(myGrid, Grid.WidthProperty, binding);
25     }
26 }

—EOF—

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