Wpf Xaml间接查找控件或用x:name来应用控件实例

最新推荐文章于 2023-09-06 11:36:38 发布

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最新推荐文章于 2023-09-06 11:36:38 发布

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1.使用树状进行间接查找。

代码如下：

View Code

1 < Grid >
2 < Button Content = " Hello " Height = " 30 " Width = " 50 " />
3 </ Grid >

后台代码如下：通过后台代码来寻找控件实例。

如下：

View Code

1 public win()
2         {
3             InitializeComponent();
4             Grid gd = this .Content as Grid;
5             Button btn = gd.Children[ 0 ] as Button;
6
7             btn.Content = " wpf " ;
8
9         }

运行结果如下：说明button最终的显示结果取决于后台代码：

2.使用x:name来访问xaml对象实例。xaml中的所有的控件的属性和事件都都属于FrameworkElement，

前台代码如下：

View Code

1 < Window x:Class = " wpf.Name "
2         xmlns = " http://schemas.microsoft.com/winfx/2006/xaml/presentation "
3          xmlns:local = " clr-namespace:wpf "
4         xmlns:x = " http://schemas.microsoft.com/winfx/2006/xaml "
5
6         Title = " Name " Height = " 300 " Width = " 300 " >
7
8      < Grid >
9          < Button x:Name = " btn " Width = " 80 " Height = " 50 "   Click = " Btn_Click " >
10              < Button.Content >
11                  < local:Student x:Name = " Stu " />
12              </ Button.Content >
13
14          </ Button >
15
16      </ Grid >
17 </ Window >

后台代码

1 namespace wpf
2 {
3      /// <summary>
4      /// Name.xaml 的交互逻辑
5      /// </summary>
6      public partial class Name : Window
7     {
8          public Name()
9         {
10             InitializeComponent();
11             btn.Content = " my name " ;
12             Stu.Sno = " 20070711123 " ;
13         }
14
15          private void Btn_Click( object sender, RoutedEventArgs e)
16         {
17             MessageBox.Show(btn.Name);
18         }
19     }
20
21      public class Student
22     {
23          public string Sno { get ; set ; }
24     }
25 }

说明通过创建Student来先说明x:Name与Name的区别。

对于xaml来说，x:Name与name是一样的。都是实例对象的引用。

而对于自己创建的类，是不一样的。

参考：http://www.cnblogs.com/prism/archive/2010/09/13/1824789.html