我創建了一個新的解決方案。我添加了一個鏈接到System.Windows.Controls.Toolkit到我的Silverlight項目,並寫了這個代碼:如何使PanelDragDropTarget僅充當目標而不是源?
XAML:
<UserControl x:Class="SilverlightApplication4.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:toolkit="http://schemas.microsoft.com/winfx/2006/xaml/presentation/toolkit"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="400">
<Grid x:Name="LayoutRoot" Background="White">
<Grid>
<toolkit:PanelDragDropTarget Margin="0,0,150,150" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch" AllowedSourceEffects="Copy">
<Grid Name="grid1" Background="Blue">
<Rectangle Height="40" HorizontalAlignment="Left" Margin="5,5,0,0" Name="rectangle1" Stroke="Black" StrokeThickness="1" VerticalAlignment="Top" Width="80" Fill="Red" />
</Grid>
</toolkit:PanelDragDropTarget>
<toolkit:PanelDragDropTarget VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch" Margin="150,150,0,0" AllowDrop="True" Drop="PanelDragDropTarget_Drop" AllowedSourceEffects="None">
<Grid Name="grid2" Background="Green" />
</toolkit:PanelDragDropTarget>
</Grid>
</Grid>
</UserControl>
C#:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
namespace SilverlightApplication4
{
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
}
private void PanelDragDropTarget_Drop(object sender, Microsoft.Windows.DragEventArgs e)
{
Rectangle myRectangle = new Rectangle() { Margin = new Thickness(5,5,0,0), Height = 40, Width = 80,
HorizontalAlignment = System.Windows.HorizontalAlignment.Left, VerticalAlignment = System.Windows.VerticalAlignment.Top,
StrokeThickness = 1, Stroke = new SolidColorBrush(Colors.Black), Fill = new SolidColorBrush(Colors.Red)};
grid2.Children.Add(myRectangle);
}
}
}
現在,當我拖放從grid1到grid2的小紅色矩形一切正常。但是當我觸摸grid2中新添加的矩形時,它會顯示可以拖動的可見標誌。我的問題是如何使第二個PanelDragDropTarget(與grid2裏面)僅作爲拖放目標而不是源?我的意思是如何阻止用戶在grid2中拖動新創建的矩形的可能性,即排除這個新矩形可拖動的任何可見跡象?因爲在我的情況下它不應該是可拖動的。