ShrlAlgoToolkit/ShrlAlgoToolkit.Mvvm/Behaviors/DropFileBehavior.cs

using System.Windows;
using Microsoft.Xaml.Behaviors;

namespace ShrlAlgoToolkit.Mvvm.Behaviors;

/// <summary>
/// <20><>ק<EFBFBD>ļ<EFBFBD><C4BC>¼<EFBFBD>
/// </summary>
/// <example>DropFileBehaviors Data="{Binding FileNames,Mode=OneWayToSource}"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD>ԣ<EFBFBD>ͨ<EFBFBD><CDA8>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5>Mvvm</example>
/// <remarks><3E><><EFBFBD>ô<EFBFBD><C3B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>AllowDrop<6F><70><EFBFBD><EFBFBD><EFBFBD>ϲ㸲<CFB2><E3B8B2>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Grid<69><64><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><C3B4>ڵ<EFBFBD>DropEnter<65><72>DropLeave(EventTrigger)<29>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD><EFBFBD>Drop<6F>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(ChangePropertyAction)</remarks>
class DropFileBehavior : Behavior<FrameworkElement>
{
    public string[] Data
    {
        get { return (string[])GetValue(DataProperty); }
        set { SetValue(DataProperty, value); }
    }

    public static readonly DependencyProperty DataProperty =
        DependencyProperty.Register(nameof(Data), typeof(string[]), typeof(DropFileBehavior), new PropertyMetadata(null));


    protected override void OnAttached()
    {
        AssociatedObject.AllowDrop = true;
        AssociatedObject.Drop += DropHandler;
    }

    private void DropHandler(object sender, DragEventArgs e)
    {
        if (e.Data.GetDataPresent(DataFormats.FileDrop))
        {
            Data = (string[])e.Data.GetData(DataFormats.FileDrop);
        }
    }

    protected override void OnDetaching()
    {
        AssociatedObject.Drop -= DropHandler;
    }
    protected override void OnChanged()
    {
        base.OnChanged();
    }
}