C# XAML：访问用户控件内的控件

我有这样的userControl：

<Grid x:Name="LayoutRoot" Background="Transparent">
    <Image Source="/Images/btn1_normal@2x.png" Stretch="Fill" />
    <TextBlock x:Name="Text" Text="Button" Foreground="Black"
               VerticalAlignment="Center" HorizontalAlignment="Center"/>
</Grid>

<MyControlls:MyButton Width="90" Height="55"/>

<MyControlls:MyButton Width="90" Height="55">
    <MyButton.Text Text="Hello World!" />        
</MyControlls:MyButton>`

<MyUserControl:MyButton Width="90" Height="55" Margin="10 0 0 0" Title="Hello Wold!" />

我在另一个XAML中使用此userControl，如下所示：

<Grid x:Name="LayoutRoot" Background="Transparent">
    <Image Source="/Images/btn1_normal@2x.png" Stretch="Fill" />
    <TextBlock x:Name="Text" Text="Button" Foreground="Black"
               VerticalAlignment="Center" HorizontalAlignment="Center"/>
</Grid>

<MyControlls:MyButton Width="90" Height="55"/>

<MyControlls:MyButton Width="90" Height="55">
    <MyButton.Text Text="Hello World!" />        
</MyControlls:MyButton>`

<MyUserControl:MyButton Width="90" Height="55" Margin="10 0 0 0" Title="Hello Wold!" />

现在，我如何访问此XAML中的textBlock命名文本并更改其文本（在Windows phone 8中）？ 大概是这样的：

<Grid x:Name="LayoutRoot" Background="Transparent">
    <Image Source="/Images/btn1_normal@2x.png" Stretch="Fill" />
    <TextBlock x:Name="Text" Text="Button" Foreground="Black"
               VerticalAlignment="Center" HorizontalAlignment="Center"/>
</Grid>

<MyControlls:MyButton Width="90" Height="55"/>

<MyControlls:MyButton Width="90" Height="55">
    <MyButton.Text Text="Hello World!" />        
</MyControlls:MyButton>`

<MyUserControl:MyButton Width="90" Height="55" Margin="10 0 0 0" Title="Hello Wold!" />

`

---

谢谢。

要完成此任务，一个解决方案可以是在

控件中声明一个隐藏在以下代码后面的代码：

  public string ButtonText
  {
    get { return (string )this.GetValue(ButtonTextProperty); }
    set { this.SetValue(ButtonTextProperty, value); } 
  }
  public static readonly DependencyProperty ButtonTextProperty = DependencyProperty.Register(
    "ButtonText", typeof(string), typeof(MyButton),new PropertyMetadata(false));

然后必须将其绑定到xaml代码中：

  <YourControl x:Name="MyButtonName">
    ... // some xaml code
    <Grid x:Name="LayoutRoot" Background="Transparent">
        <Image Source="/Images/btn1_normal@2x.png" Stretch="Fill" />
        <TextBlock x:Name="Text" Text="Button" Foreground="Black"
                   VerticalAlignment="Center" HorizontalAlignment="Center"
                   Text="{Binding Path=ButtonText, ElementName=MyButtonName}"/>
    </Grid>
 </YourControl>

你不能直接这么做。这里有两种选择

解决方案1：使用ViewModel
使用视图模型类存储需要在自定义控件中显示的特性

class MyButtonViewModel
{
    public string Text { get;set; }
}

MyButton.xaml：

<TextBlock Text={Binding Text} ...

这要复杂得多。看

选择哪一个？
如果要在几个不同的项目中使用控件，并且需要能够更改控件的外观，请选择
UserControl

否则，请使用
ViewModel
，并最终在项目的剩余部分应用MVVM模式。
我找到了解决方案

<UserControl x:Class="Becel.Controls.MyButton"
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"
FontFamily="{StaticResource PhoneFontFamilyNormal}"
FontSize="{StaticResource PhoneFontSizeNormal}"
Foreground="{StaticResource PhoneForegroundBrush}"
x:Name="MyUserControll">

<Grid x:Name="LayoutRoot" Background="Transparent">
    <Image x:Name="myImage" Source="/Images/btn1.9_normal@2x.png" Stretch="Fill"
MouseEnter="Image_MouseEnter" MouseLeave="Image_MouseLeave" />
    <TextBlock x:Name="textTitle" Text="{Binding Title, ElementName=MyUserControll}" VerticalAlignment="Center" HorizontalAlignment="Center" TextAlignment="Center" Foreground="Black" FontSize="25"  MouseEnter="Image_MouseEnter" MouseLeave="Image_MouseLeave"/>

</Grid>
</UserControl>

然后在任何地方你都可以这样使用：

<Grid x:Name="LayoutRoot" Background="Transparent">
    <Image Source="/Images/btn1_normal@2x.png" Stretch="Fill" />
    <TextBlock x:Name="Text" Text="Button" Foreground="Black"
               VerticalAlignment="Center" HorizontalAlignment="Center"/>
</Grid>

<MyControlls:MyButton Width="90" Height="55"/>

<MyControlls:MyButton Width="90" Height="55">
    <MyButton.Text Text="Hello World!" />        
</MyControlls:MyButton>`

<MyUserControl:MyButton Width="90" Height="55" Margin="10 0 0 0" Title="Hello Wold!" />

谢谢您的回答，但我开发的是Windows Phone 8应用程序（不是WPF）。有没有办法在WP8中创建CustomControl？请参阅（为XAML Metro风格的应用程序构建可部署的自定义控件）