WPF揭秘--学习笔记

XAML与WPF可以独立分开使用，

XAML定义:

<Button xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        Content="ok"/>

 

 

上面一段代码是xaml格式直接可以再浏览器中打开，一个为“ok”的按钮

等同于

第二个是在属性中设置

接下来两个功能相同

 3.1遍历和打印逻辑树和可视树

 1 public MainWindow()
 2         {
 3             InitializeComponent();
 4 
 5             Console.WriteLine("LogicalTree Structure:");
 6             EnumLogicalTree(0, this);
 7             
 8         }
 9 
10         protected override void OnContentRendered(EventArgs e)
11         {
12             base.OnContentRendered(e);
13 
14             Console.WriteLine("VisualTree Structure:");
15             EnumVisualTree(0, this);
16         }
17 
18         //遍历视觉树
19         public void EnumVisualTree(int Ident, Visual visualObj)
20         {
21             for (int i = 0; i < VisualTreeHelper.GetChildrenCount(visualObj); i++)
22             { 
23                 //接收特定索引的子元素
24                 Visual childVisual = (Visual)VisualTreeHelper.GetChild(visualObj, i);
25                 Console.WriteLine(new string(' ', Ident) + childVisual);
26 
27                 EnumVisualTree(Ident + 1, childVisual);
28             }
29         }
30 
31         //遍历逻辑树
32         public void EnumLogicalTree(int Ident, object logObj)
33         {
34             if (!(logObj is DependencyObject))//对象必须派生自DependencyObject对象
35                 return;
36 
37             foreach (object childLogical in LogicalTreeHelper.GetChildren(logObj as DependencyObject))
38             {
39                 Console.WriteLine(new string(' ', Ident) + childLogical);
40 
41                 EnumLogicalTree(Ident + 1, childLogical);
42             }
43         }
遍历树

可以用元素自己的实例方法在两种树中进行操作。例如，Visual类包含了3个
protected的成员（VisualParent、VisualChildrenCount和GetVisualChild）用于验证它的可视父
节点和孩子节点。

4.控件--内容控件

<Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
  <ComboBox>
    <!-- Item #1 -->
    <StackPanel Orientation="Horizontal" Margin="5">
      <Image Source="CurtainCall.bmp"/>
      <StackPanel Width="200">
        <TextBlock Margin="5,0" FontSize="14" FontWeight="Bold"
        VerticalAlignment="center">Curtain Call</TextBlock>
        <TextBlock Margin="5" VerticalAlignment="center" TextWrapping="Wrap">
          Whimsical, with a red curtain background that represents a stage.
        </TextBlock>
      </StackPanel>
    </StackPanel>
    <!-- Item #2 -->
    <StackPanel Orientation="Horizontal" Margin="5">
      <Image Source="Fireworks.bmp"/>
      <StackPanel Width="200">
        <TextBlock Margin="5,0" FontSize="14" FontWeight="Bold"
        VerticalAlignment="center">Fireworks</TextBlock>
        <TextBlock Margin="5" VerticalAlignment="center" TextWrapping="Wrap">
          Sleek, with a black sky containing fireworks. When you need to
          celebrate PowerPoint-style, this design is for you!
        </TextBlock>
      </StackPanel>
    </StackPanel>
  </ComboBox>
</Canvas>
combobox

 

http://v.youku.com/v_show/id_XMTkxOTM5NTQw.html

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

posted @ 2013-06-24 20:09  Jimmy_5  阅读(289)  评论(0)  编辑  收藏  举报