WPF Sürükle & Bırak, DragOver

Question

&'u bir Stackpanel düğmesinden başka bir Stackpanel'a sürüklemek istiyorum. Uygulama hala çalışıyor, ancak Düğme'nin, Drag Event sırasında görsel bir Geri Bildirim olarak fare imlecine eklenmesini istiyorum.

Bütün gün bir çözüm arıyordum, ancak sadeceile değil, Stackpanels ile ilgili çözümleri buluyorum.

Button.xaml

<UserControl x:Class="LisaBeispiel2.Controls.ImageButton" 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    Name="IB" 
    AllowDrop="True"> 


<Grid> 
    <Button Margin="3 0 3 3" 
      VerticalAlignment="Top" 
      HorizontalAlignment="Left" 
      IsEnabled="{Binding IsButtonEnabled, ElementName=IB}"> 
     <StackPanel Orientation="Vertical"> 
      <Image Source="{Binding ElementName=IB, Path=Image}" 
        Width="35" 
        Height="35" 
        Margin="8" /> 
      <TextBlock Text="{Binding ElementName=IB, Path=Text}" 
         Foreground="White" 
         FontSize="10" 
         FontFamily="Arial" 
         TextWrapping="Wrap" 
         TextAlignment="Center" /> 
     </StackPanel> 
    </Button> 

</Grid> 

Button.xaml.cs

protected override void OnMouseMove(MouseEventArgs e) 
    { 
     base.OnMouseMove(e); 
     if (e.LeftButton == MouseButtonState.Pressed) 
     { 
      // Package the data into a Dataobject 
      DataObject data = new DataObject(); 

      data.SetData("Object", this); 

      // Inititate the drag-and-drop operation with 3 Parameter: dragSource, data, allowedEffects 
      DragDrop.DoDragDrop(this, data, DragDropEffects.All); 
     } 
    } 

Penceresi: Burada

benim Kod olduğu .xaml

<StackPanel Orientation="Horizontal" 
       Drop="panel_Drop"> 
    <controls:ImageButton 
    Image="/LisaBeispiel2;component/Images/Icons/Rotate.png" 
    Text="Rotate"/> 
    <controls:ImageButton 
    Image="/LisaBeispiel2;component/Images/Icons/Zoom_Pan.png" 
    Text="Zoom/Pan"/> 
    </StackPanel> 
     <StackPanel Orientation="Horizontal" 
        Drop="panel_Drop"> 
    <controls:ImageButton 
    Image="/LisaBeispiel2;component/Images/Icons/ButtonPlatzhalter.png" 
    Text="Add"/> 
    <controls:ImageButton 
    Image="/LisaBeispiel2;component/Images/Icons/ButtonPlatzhalter.png" 
    Text="Add"/> 
    </StackPanel> 
    </StackPanel> 
    </StackPanel> 

Window.xaml.cs

private void panel_Drop(object sender, DragEventArgs e) 
    { 
     // If an element in the panel has already handled the drop, 
     // the panel should not also handle it. 
     if (e.Handled == false) 
     { 
      Panel _panel = (Panel)sender; 
      UIElement _element = (UIElement)e.Data.GetData("Object"); 

      if (_panel != null && _element != null) 
      { 
       // Get the panel that the element currently belongs to, 
       // then remove it from that panel and add it the Children of 
       // the panel that its been dropped on. 
       Panel _parent = (Panel)VisualTreeHelper.GetParent(_element); 

       if (_parent != null) 
       { 
        _parent.Children.Remove(_element); 
        _panel.Children.Add(_element); 

       } 

      } 
     } 
    } 

Answer 1

void StackPanel_DragEnter(object sender, System.Windows.DragEventArgs e) 
{ 
    e.Effects = System.Windows.DragDropEffects.Copy; 
} 

Bu etkinliği kullanabilir ve sizin sürükle & damla olayı ile çalışır, böylece