相关疑难解决方法(0)

即使是最基本的例子,我也会疯狂地试图让它工作.我不能为我的生活得到约束力.这是一个不适合我的超级简单示例.我必须做错事.

我的控件库程序集中的自定义控件:

public class TestControl : Control
{
    public static readonly DependencyProperty TestPropProperty =
        DependencyProperty.Register("TestProp", typeof(string), typeof(TestControl), new UIPropertyMetadata(null));

    public string TestProp
    {
        get { return (string)GetValue(TestPropProperty); }
        set { SetValue(TestPropProperty, value); }
    }

    static TestControl()
    {
        DefaultStyleKeyProperty.OverrideMetadata(typeof(TestControl), new FrameworkPropertyMetadata(typeof(TestControl)));
    }
}

它的XAML模板:

<Style TargetType="{x:Type local:TestControl}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type local:TestControl}">
                <Border Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}">
                    <StackPanel>
                        <TextBlock Text="Testing..." />
                        <Label Content="{Binding TestProp}" Padding="10" />
                    </StackPanel>
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

这是XAML在wpf窗口中使用控件来引用我的控件库:

<Grid>
    <ItemsControl Name="mylist">
        <ItemsControl.ItemTemplate>
            <DataTemplate> …

我有一个自定义文本框定义如下:

public class CustomTextBox : TextBox
{
    public static DependencyProperty CustomTextProperty = 
             DependencyProperty.Register("CustomText", typeof(string), 
             typeof(CustomTextBox));

    static CustomTextBox()
    {
        TextProperty.OverrideMetadata(typeof(SMSTextBox),
                      new FrameworkPropertyMetadata(string.Empty,
                      FrameworkPropertyMetadataOptions.Journal |
                          FrameworkPropertyMetadataOptions.BindsTwoWayByDefault,
                      new PropertyChangedCallback(CustomTextBox_OnTextPropertyChanged));
    }

    public string CustomText
    {
        get { return (string)GetValue(CustomTextProperty); }
        set { SetValue(CustomTextProperty, value); }
    }

    private static void CustomTextBox_OnTextPropertyChanged(DependencyObject d,
                     DependencyPropertyChangedEventArgs e)
    {
        CustomTextBox customTextBox = d as CustomTextBox;

        customTextBox.SetValue(CustomTextProperty, e.NewValue);
    }
}

我正在绑定XAML中的自定义文本属性 -

<local:CustomTextBox CustomText="{Binding ViewModelProperty}" />

我面临的问题是,当我在CustomTextBox中输入任何内容时,更改不会反映在ViewModelProperty中,即ViewModelProperty没有得到更新.CustomTextProperty正在更新,但我想我需要做一些额外的事情来使绑定工作.

我不做什么？我将不胜感激任何帮助.

谢谢