如何：处理 Loaded 事件

项目
05/04/2023

此示例演示如何处理 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

以下示例使用 Extensible Application Markup Language (XAML) 和代码隐藏文件。

<StackPanel
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  x:Class="SDKSample.FELoaded"
  Loaded="OnLoad"
  Name="root"
>
</StackPanel>

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;
}

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

另请参阅