相关疑难解决方法(0)

我有一个班级，其中有一个DependencyProperty成员：

public class SomeClass : FrameworkElement
{
    public static readonly DependencyProperty SomeValueProperty
        = DependencyProperty.Register(
            "SomeValue",
            typeof(int),
            typeof(SomeClass));
            new PropertyMetadata(
                new PropertyChangedCallback(OnSomeValuePropertyChanged)));

    public int SomeValue
    {
        get { return (int)GetValue(SomeValueProperty); }
        set { SetValue(SomeValueProperty, value); }
    }

    public int GetSomeValue()
    {
        // This is just a contrived example.
        // this.SomeValue always returns the default value for some reason,
        // not the current binding source value
        return this.SomeValue;
    }

    private static void OnSomeValuePropertyChanged(
        DependencyObject target, DependencyPropertyChangedEventArgs e)
    {
        // This …