Win 8中WPF listview与listBox的Drag、Drop操作

Win 8中WPF listview与listBox的Drag、Drop操作。

基本原理是将listview中的项拖动到listBox中。

界面：

 
           "DragTitleToWebView.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" 
          
           mc:Ignorable= 
           "d" 
          
           d:DesignHeight= 
           "768"  
           d:DesignWidth= 
           "1366" 
           > 
          
           "LayoutRoot"  
           Background= 
           "#FF0C0C0C" 
           > 
          
           "1*" 
           /> 
          
           "5*" 
           /> 
          
           "0"  
           AllowDrop= 
           "True"  
           CanDragItems= 
           "True"   
           CanReorderItems= 
           "True"  
           DragItemsStarting= 
           "ListView_DragItemsStarting"  
           > 
          
           "Orange"   
           Tag= 
           "Rect1"  
           Width= 
           "100"  
           Height= 
           "100" 
           /> 
          
           "Orange"  
           Tag= 
           "Rect2"  
           Width= 
           "120"  
           Height= 
           "120" 
           /> 
          
           "Orange"  
           Tag= 
           "Rect3"  
           Width= 
           "140"  
           Height= 
           "140" 
           /> 
          
           "Orange"  
           Tag= 
           "Rect4"  
           Width= 
           "160"  
           Height= 
           "160" 
           />  
          
           "lb"  
           Grid.Column= 
           "1"  
           Margin= 
           "10" 
           > 
          
           "10"  
           x:Name= 
           "droppanel"  
           Opacity= 
           "0.01"  
           Visibility= 
           "Collapsed"  
           Grid.Column= 
           "1"  
           AllowDrop= 
           "True"  
           Drop= 
           "droppanel_Drop"  
           Fill= 
           "Green" 
           />

　Code：

 
           using  
           Windows.UI.Xaml.Media; 
          
           using  
           Windows.UI.Xaml.Shapes; 
          
           partial  
           class  
           MainPage 
          
           { 
          
           private  
           bool  
           flag =  
           false 
           ; 
          
           public  
           MainPage() 
          
           { 
          
           InitializeComponent(); 
          
           } 
          
           private  
           void  
           ListView_DragItemsStarting( 
           object  
           sender, DragItemsStartingEventArgs e) 
          
           { 
          
           e.Data.SetText( 
           "t" 
           , (e.Items[0]  
           as  
           Rectangle).Tag.ToString()); 
          
           e.Data.SetText( 
           "width" 
           , (e.Items[0]  
           as  
           Rectangle).Width.ToString()); 
          
           e.Data.SetText( 
           "height" 
           , (e.Items[0]  
           as  
           Rectangle).Height.ToString()); 
          
           droppanel.Visibility = Windows.UI.Xaml.Visibility.Visible; 
          
           lb.Visibility = Windows.UI.Xaml.Visibility.Collapsed; 
          
           if  
           (flag) 
          
           { 
          
           lb.Visibility = Windows.UI.Xaml.Visibility.Visible; 
          
           } 
          
           } 
          
           private  
           void  
           droppanel_Drop( 
           object  
           sender, DragEventArgs e) 
          
           { 
          
           string  
           tag = e.Data.GetText( 
           "t" 
           ); 
          
           //如果已经有相同的item，则返回 
          
           foreach  
           (Rectangle item  
           in  
           lb.Items) 
          
           { 
          
           if  
           (item.Tag.ToString() == tag) 
          
           { 
          
           return 
           ; 
          
           } 
          
           } 
          
           int  
           width =  
           int 
           .Parse(e.Data.GetText( 
           "width" 
           )); 
          
           int  
           height =  
           int 
           .Parse(e.Data.GetText( 
           "height" 
           )); 
          
           Rectangle rect =  
           new  
           Rectangle(); 
          
           rect.Tag = tag; 
          
           rect.Height = height; 
          
           rect.Width = width; 
          
           SolidColorBrush b =  
           new  
           SolidColorBrush(Colors.Orange); 
          
           rect.Fill = b; 
          
           lb.Items.Add(rect); 
          
           droppanel.Visibility = Windows.UI.Xaml.Visibility.Collapsed; 
          
           lb.Visibility = Windows.UI.Xaml.Visibility.Visible; 
          
           flag =  
           true 
           ; 
          
           } 
          
           }

如图：Win 8中是全屏，这里只是图片的一部。

参考

本文转自Work Hard Work Smart博客园博客，原文链接：http://www.cnblogs.com/linlf03/archive/2012/02/29/2373855.html，如需转载请自行联系原作者

Win 8中WPF listview与listBox的Drag、Drop操作

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