你也可以試試Visifire也可以。您可以使用Visifire的圖表和量表並實現拖放行爲。以下代碼將幫助您在應用程序中構建拖放行爲。您可以在Silverlight或WPF應用程序中將此行爲附加到Visifire圖表或量表。
您可以從我的SkyDrive下載源代碼(DragElementsInCanvasBehaviour.zip)。
https://skydrive.live.com/?cid=61995e3895be1728&sc=documents&uc=1&id=61995E3895BE1728!106#
[ 「Hello World」 的拖放行爲分類]
using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Interactivity;
namespace DragInCanvasBehaviour
{
public class DragInCanvasBehaviour : Behavior<UIElement>
{
protected override void OnAttached()
{
base.OnAttached();
this.AssociatedObject.MouseLeftButtonDown += AssociatedObject_MouseLeftButtonDown;
this.AssociatedObject.MouseMove += AssociatedObject_MouseMove;
this.AssociatedObject.MouseLeftButtonUp += AssociatedObject_MouseLeftButtonUp;
}
protected override void OnDetaching()
{
base.OnDetaching();
this.AssociatedObject.MouseLeftButtonDown -= AssociatedObject_MouseLeftButtonDown;
this.AssociatedObject.MouseMove -= AssociatedObject_MouseMove;
this.AssociatedObject.MouseLeftButtonUp -= AssociatedObject_MouseLeftButtonUp;
}
private Canvas canvas;
private bool IsDragging = false;
private Point mouseOffset;
private void AssociatedObject_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (canvas == null)
canvas = (Canvas)VisualTreeHelper.GetParent(this.AssociatedObject);
IsDragging = true;
mouseOffset = e.GetPosition(AssociatedObject);
AssociatedObject.CaptureMouse();
}
private void AssociatedObject_MouseMove(object sender, MouseEventArgs e)
{
if (IsDragging)
{
FrameworkElement element = AssociatedObject as FrameworkElement;
FrameworkElement parent = element.Parent as FrameworkElement;
Point point = e.GetPosition(parent);
AssociatedObject.SetValue(Canvas.TopProperty, point.Y - element.Height /2);
AssociatedObject.SetValue(Canvas.LeftProperty, point.X - element.Width/2);
}
}
private void AssociatedObject_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
if (IsDragging)
{
AssociatedObject.ReleaseMouseCapture();
IsDragging = false;
}
}
}
}
希望這有助於!