此示例介绍如何通过更改后台代码中边距的任何现有属性值来设置 Margin 属性。 该 Margin 属性是基元素的属性 FrameworkElement ，因此由各种控件和其他元素继承。
此示例使用可扩展应用程序标记语言（XAML）编写，其中包含 XAML 引用的代码隐藏文件。 后台代码同时以 C# 和 Microsoft Visual Basic 版本显示。
示例：
Click To See Change!!
void OnClick(object sender, RoutedEventArgs e)
{
// Get the current value of the property.
Thickness marginThickness = btn1.Margin;
// If the current leftlength value of margin is set to 10 then change it to a new value.
// Otherwise change it back to 10.
if(marginThickness.Left == 10)
{
btn1.Margin = new Thickness(60);
} else {
btn1.Margin = new Thickness(10);
}
}
Private Sub OnClick(ByVal sender As Object, ByVal e As RoutedEventArgs)
' Get the current value of the property.
Dim marginThickness As Thickness
marginThickness = btn1.Margin
' If the current leftlength value of margin is set to 10 then change it to a new value.
' Otherwise change it back to 10.
If marginThickness.Left = 10 Then
btn1.Margin = New Thickness(60)
Else
btn1.Margin = New Thickness(10)
End If
End Sub