为什么Horizo​​ntalContentAlignment不像WPF中那样在Silverlight中工作？

Question

在WPF，tb.HorizontalContentAlignment = HorizontalAlignment.Center作品：

WPF XAML：

<Window x:Class="TestText2343434.Window1" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    Title="Window1" Height="300" Width="300"> 
    <Grid> 
     <StackPanel x:Name="MainContent" Margin="10" HorizontalAlignment="Left"/> 
    </Grid> 
</Window> 

WPF代码背后：

using System.Windows; 
using System.Windows.Controls; 

namespace TestText2343434 
{ 
    public partial class Window1 : Window 
    { 
     public Window1() 
     { 
      InitializeComponent(); 

      TextBox tb = new TextBox(); 
      tb.Width = 30; 
      tb.MaxLength = 1; 
      tb.HorizontalContentAlignment = HorizontalAlignment.Center; 

      MainContent.Children.Add(tb); 
     } 
    } 
} 

在Silverlight中，tb.HorizontalContentAlignment = HorizontalAlignment.Center不起作用：

的Silverlight XAML：

<UserControl x:Class="TestContent222.MainPage" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
    mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480"> 
    <Grid x:Name="LayoutRoot"> 
     <StackPanel x:Name="MainContent" Margin="10" HorizontalAlignment="Left"/> 
    </Grid> 
</UserControl> 

的Silverlight代码背后：

using System.Windows; 
using System.Windows.Controls; 

namespace TestContent222 
{ 
    public partial class MainPage : UserControl 
    { 
     public MainPage() 
     { 
      InitializeComponent(); 

      TextBox tb = new TextBox(); 
      tb.Width = 30; 
      tb.MaxLength = 1; 
      tb.HorizontalContentAlignment = HorizontalAlignment.Center; 

      MainContent.Children.Add(tb); 
     } 
    } 
} 

为了让HorizontalContentAlignment在Silverlight中像在WPF中一样工作，我需要做些什么？

Answer 1

Horizo​​ntalContentAlignment不是Silverlight中的TextBox上的有效属性（它未在Expression Blend或VS2010属性窗口中公开）。

你要设置TextAlignment = “中心”，这是

tb.TextAlignment = System.Windows.TextAlignment.Center; 

希望这有助于等效。