如何：处理 Loaded 事件
本示例演示如何处理 FrameworkElement.Loaded 事件以及处理该事件的相应方案。 处理程序在页面加载时创建一个 Button。
示例
下面的示例将Extensible Application Markup Language (XAML) 与代码隐藏文件一起使用。
<StackPanel
xmlns="https://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="https://schemas.microsoft.com/winfx/2006/xaml"
x:Class="SDKSample.FELoaded"
Loaded="OnLoad"
Name="root"
>
</StackPanel>
Private Sub OnLoad(ByVal sender As Object, ByVal e As RoutedEventArgs)
Dim b1 As Button = New Button()
b1.Content = "New Button"
root.Children.Add(b1)
b1.Height = 25
b1.Width = 200
b1.HorizontalAlignment = HorizontalAlignment.Left
End Sub
void OnLoad(object sender, RoutedEventArgs e)
{
Button b1 = new Button();
b1.Content = "New Button";
root.Children.Add(b1);
b1.Height = 25;
b1.Width = 200;
b1.HorizontalAlignment = HorizontalAlignment.Left;
}