鼠標拖動時 控件滑動

截圖：

核心代碼：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Media.Animation;
namespace FlashPrac2
{
    /// <summary>  
    /// MainWindow.xaml 的交互邏輯  
    /// </summary>  
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        /// <summary>  
        /// 完成緩沖效果  
        /// </summary>  
        /// <param name="from">起始位置</param>  
        /// <param name="to">目標位置</param>  
        /// <param name="ar">加速加速度</param>  
        /// <param name="dr">減速加速度</param>  
        /// <param name="duration">持續時間</param>  
        private void DoMove(DependencyProperty dp, double to, double ar, double dr, double duration)
        {
            DoubleAnimation doubleAnimation = new DoubleAnimation();//創建雙精度動畫對象  
            doubleAnimation.To = to;//設置動畫的結束值  
            doubleAnimation.Duration = TimeSpan.FromSeconds(duration);//設置動畫時間線長度  
            doubleAnimation.AccelerationRatio = ar;//動畫加速  
            doubleAnimation.DecelerationRatio = dr;//動畫減速  
            doubleAnimation.FillBehavior = FillBehavior.HoldEnd;//設置動畫完成后執行的操作  
            grdTransfer.BeginAnimation(dp, doubleAnimation);//設置動畫應用的屬性并啟動動畫  
        }

        private double pressedX;
        /// <summary>  
        /// 點擊鼠標，記錄鼠標單擊的位置  
        /// </summary>  
        /// <param name="sender"></param>  
        /// <param name="e"></param>  
        private void grdTest_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            ////獲得鼠標點擊的X坐標  
            pressedX = e.GetPosition(cvsGround).X;
        }

        ////鼠標釋放時的操作  
        private void grdTest_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            double transferLeft = Convert.ToDouble(grdTransfer.GetValue(Canvas.LeftProperty));
            //btn1.Content = transferLeft.ToString();
            if (transferLeft > 0)
            {
                transferLeft = 0;
            }
            if (this.Width - transferLeft > cvsGround.Width)
            {
                transferLeft = this.Width - cvsGround.Width;
            }
            ////獲得鼠標釋放時的位置  
            double releasedX = e.GetPosition(cvsGround).X;
            ////獲得距離間隔  
            double interval = releasedX - pressedX;
            pressedX = 0;
            ////計算出傳送帶要的目標位置  
            double to = transferLeft   interval;
            ////移動  
            //btn1.Content = transferLeft.ToString()   " "   to.ToString();
            // btn1.Content = transferLeft.ToString()   "  "   to.ToString();  
            DoMove(Canvas.LeftProperty, to, 0.1, 0.5, 0.5);
        }
    }
}