WPF SDK研究 Intro(2) QuickStart2

QuickStart2
    This sample shows how to use a DockPanel element to arrange three Button in a vertical stack.
    区别于上一个Sample，这个例子在StackPanel里，居左对齐，垂直排列3个按钮。

< StackPanel 
  xmlns = " http://schemas.microsoft.com/winfx/2006/xaml/presentation "
  xmlns:x = " http://schemas.microsoft.com/winfx/2006/xaml " >
   < Button HorizontalAlignment = " Left "
          Width = " 100 "
          Margin = " 10,10,10,10 " > Button  1 </ Button >          
   < Button HorizontalAlignment = " Left "
          Width = " 100 "
          Margin = " 10,10,10,10 " > Button  2 </ Button >
   < Button HorizontalAlignment = " Left "
          Width = " 100 "
          Margin = " 10,10,10,10 " > Button  3 </ Button >     
</ StackPanel >