45 lines
1.5 KiB
C#
45 lines
1.5 KiB
C#
using System.Windows;
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using Microsoft.Xaml.Behaviors;
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namespace ShrlAlgo.Toolkit.Mvvm.Behaviors;
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/// <summary>
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/// <20><>ק<EFBFBD>ļ<EFBFBD><C4BC>¼<EFBFBD>
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/// </summary>
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/// <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>
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/// <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>
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class DropFileBehavior : Behavior<FrameworkElement>
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{
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public string[] Data
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{
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get { return (string[])GetValue(DataProperty); }
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set { SetValue(DataProperty, value); }
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}
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public static readonly DependencyProperty DataProperty =
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DependencyProperty.Register(nameof(Data), typeof(string[]), typeof(DropFileBehavior), new PropertyMetadata(null));
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protected override void OnAttached()
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{
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AssociatedObject.AllowDrop = true;
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AssociatedObject.Drop += DropHandler;
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}
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private void DropHandler(object sender, DragEventArgs e)
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{
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if (e.Data.GetDataPresent(DataFormats.FileDrop))
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{
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Data = (string[])e.Data.GetData(DataFormats.FileDrop);
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}
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}
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protected override void OnDetaching()
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{
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AssociatedObject.Drop -= DropHandler;
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}
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protected override void OnChanged()
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{
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base.OnChanged();
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}
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} |