WPF依賴屬性不確認

Question

我想克服一個限制，不允許我綁定到常規的clr屬性。

我使用的解決方案使用自定義依賴屬性，依次更改clr屬性。

下面是代碼

class BindableTextBox : TextBox 
{ 
    public static readonly DependencyProperty BoundSelectionStartProperty = DependencyProperty.Register("BoundSelctionStart", typeof(int), typeof(BindableTextBox), 
                              new PropertyMetadata(new PropertyChangedCallback(BindableTextBox.onBoundSelectionStartChanged))); 

    private static void onBoundSelectionStartChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) 
    { 
     ((TextBox)d).SelectionStart = (int)e.NewValue; 
    } 

    private static readonly DependencyProperty BoundSelectionLenghtProperty = DependencyProperty.Register("BoundSelectionLenght", typeof(int), typeof(BindableTextBox), 
                              new PropertyMetadata(new PropertyChangedCallback(BindableTextBox.onBoundSelectionLenghtChanged))); 

    private static void onBoundSelectionLenghtChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) 
    { 
     ((TextBox)d).SelectionLength = (int)e.NewValue; 
    } 

    public int BoundSelectionStart 
    { 
     get { return (int)GetValue(BoundSelectionStartProperty); } 
     set { SetValue(BoundSelectionStartProperty, value); } 
    } 

    public int BoundSelectionLenght 
    { 
     get { return (int)GetValue(BoundSelectionLenghtProperty); } 
     set { SetValue(BoundSelectionLenghtProperty, value); } 
    } 
} 

但是當我嘗試綁定的東西BoundSelectionStart它說，它說，我只能綁定到DP。

<bindable:BindableTextBox Text="{Binding Name}" BoundSelectionStart="{Binding ElementName=slider1, Path=Value}" /> 

什麼問題？

Answer 1

你必須在該行一個錯字：

public static readonly DependencyProperty BoundSelectionStartProperty = DependencyProperty.Register(...) 

第一個參數應該是 「BoundSelectionStart」（2X E在選擇），而不是 「BoundSelctionStart」。