按鈕不會禁用

Question

我想當我點擊一個按鈕是背景圖像更改爲其他人，當我釋放按鈕回到他的原始圖像。經過大量的研究，我發現這個tutorial，這幫助我很多，工作得很好！但問題是我不能禁用按鈕，它顯示它被禁用，但如果我點擊它，它就像它沒有被禁用一樣工作！下面是代碼

using System; 
using System.Windows; 
using System.Windows.Media.Imaging; 

namespace DotNetApp 
{ 
    public partial class ButtonImage 
    { 
     #region Fields 

     public new static readonly DependencyProperty IsEnabledProperty = DependencyProperty.Register("IsEnabled", typeof (bool), typeof (ButtonImage), null); 
     public static readonly DependencyProperty ImageSourceProperty = DependencyProperty.Register("ImageSource", typeof (string), typeof (ButtonImage), null); 
     public static readonly DependencyProperty ImagePressedSourceProperty = DependencyProperty.Register("ImagePressedSource", typeof (string), typeof (ButtonImage), null); 
     public static readonly DependencyProperty ImageDisabledSourceProperty = DependencyProperty.Register("ImageDisabledSource", typeof (string), typeof (ButtonImage), null); 

     private BitmapImage _image; 
     private BitmapImage _imagePressed; 
     private BitmapImage _imageDisabled; 
     private bool _isPressed; 

     #endregion 

     #region Constructor 

     public ButtonImage() 
     { 
      InitializeComponent(); 
     } 

     #endregion 

     #region Properties 

     public new bool IsEnabled 
     { 
      get { return (bool)GetValue(IsEnabledProperty); } 

      set 
      { 
       SetValue(IsEnabledProperty, value); 

       SetImageFromState(); 
      } 
     } 

     public string ImageSource 
     { 
      get { return (string) GetValue(ImageSourceProperty); } 

      set 
      { 
       SetValue(ImageSourceProperty, value); 

       _image = SetImage(value); 
       SetImageFromState(); 
      } 
     } 

     public string ImagePressedSource 
     { 
      get { return (string) GetValue(ImagePressedSourceProperty); } 

      set 
      { 
       SetValue(ImagePressedSourceProperty, value); 

       _imagePressed = SetImage(value); 
       SetImageFromState(); 
      } 
     } 

     public string ImageDisabledSource 
     { 
      get { return (string) GetValue(ImageDisabledSourceProperty); } 

      set 
      { 
       SetValue(ImageDisabledSourceProperty, value); 

       _imageDisabled = SetImage(value); 
       SetImageFromState(); 
      } 
     } 

     #endregion 

     #region Event Handlers 

     private void ButtonIsEnabledChanged(object sender, DependencyPropertyChangedEventArgs e) 
     { 
      SetImageFromState(); 
     } 

     private void ButtonMouseEnter(object sender, System.Windows.Input.MouseEventArgs e) 
     { 
      _isPressed = true; 

      SetImageFromState(); 
     } 

     private void ButtonMouseLeave(object sender, System.Windows.Input.MouseEventArgs e) 
     { 
      _isPressed = false; 

      SetImageFromState(); 
     } 

     #endregion 

     #region Private Methods 

     private static BitmapImage SetImage(string imageSource) 
     { 
      BitmapImage bitmapImage = null; 

      if (!string.IsNullOrEmpty(imageSource)) 
      { 
       bitmapImage = new BitmapImage(new Uri(imageSource, UriKind.RelativeOrAbsolute)); 
      } 

      return bitmapImage; 
     } 

     private void SetImageFromState() 
     { 
      if (!IsEnabled) 
      { 
       image.Source = _imageDisabled; 
      } 
      else if (_isPressed) 
      { 
       image.Source = _imagePressed; 
      } 
      else 
      { 
       image.Source = _image; 
      } 
     } 

     #endregion 
    } 
} 

的一部分這裏是XAML

<Tap_Test:ButtonImage ImageSource="/images/buttons/star2.png" 
           ImageDisabledSource="/images/buttons/star2lock.png" 
           ImagePressedSource="/images/buttons/star2-2.png" 
           Style="{StaticResource ButtonImageStyle}" 
           x:Name="star2" Margin="136,80,134,480" BorderBrush="{x:Null}" Click="star2_Click" IsEnabled="False"/> 

您可以查看我提供的鏈接上的完整代碼！我也試過star2.IsEnable = false;，它沒有工作。有什麼建議麼？謝謝！

Answer 1

我認爲問題來自於這樣「SetImageFromState（）」方法總是運行，你需要一種方法來停止投放的事實，考慮一下：

private bool _disableButton; 

public bool disableButton { 
           get { return _disableButton; } 
           set { 
            _disableButton = value; 
            SetValue(IsEnabledProperty, !_disableButton);   

            } 
          } 

public new bool IsEnabled 
    { 
     get { return (bool)GetValue(IsEnabledProperty); } 

     set 
     { 
      if(!disableButton) 
      { 
       SetValue(IsEnabledProperty, value); 
       SetImageFromState(); 
      } 


     } 
    } 

所以，如果你想禁用真正的按鈕，你會去

myButton.disableButton = true;