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.Shapes;

namespace WpfApplicationDrugMove
{
    /// 

    /// Interaction logic for WindowWPFALLControlDragMoveInGrid.xaml
    /// 

    public partial class WindowWPFALLControlDragMoveInGrid : Window
    {
        public WindowWPFALLControlDragMoveInGrid()
        {
            InitializeComponent();

            foreach (UIElement uiEle in LayoutRoot.Children)
            {
                if (uiEle is Button || uiEle is TextBox)
                {
                    uiEle.AddHandler(Button.MouseLeftButtonDownEvent, new MouseButtonEventHandler(Element_MouseLeftButtonDown), true);
                    uiEle.AddHandler(Button.MouseMoveEvent, new MouseEventHandler(Element_MouseMove), true);
                    uiEle.AddHandler(Button.MouseLeftButtonUpEvent, new MouseButtonEventHandler(Element_MouseLeftButtonUp), true);
                    continue;
                }
                uiEle.MouseMove += new MouseEventHandler(Element_MouseMove);
                uiEle.MouseLeftButtonDown += new MouseButtonEventHandler(Element_MouseLeftButtonDown);
                uiEle.MouseLeftButtonUp += new MouseButtonEventHandler(Element_MouseLeftButtonUp);
            } 
        }

        bool isDragDropInEffect = false;
        Point pos = new Point();

        void Element_MouseMove(object sender, MouseEventArgs e)
        {
            if (isDragDropInEffect)
            {
                FrameworkElement currEle = sender as FrameworkElement;
                double xPos = e.GetPosition(null).X - pos.X + currEle.Margin.Left;
                double yPos = e.GetPosition(null).Y - pos.Y + currEle.Margin.Top;
                currEle.Margin = new Thickness(xPos, yPos, 0, 0);
                pos = e.GetPosition(null);
            }
        }


        void Element_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {

            FrameworkElement fEle = sender as FrameworkElement;
            isDragDropInEffect = true;
            pos = e.GetPosition(null);
            fEle.CaptureMouse();
            fEle.Cursor = Cursors.Hand;
        }

        void Element_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            if (isDragDropInEffect)
            {
                FrameworkElement ele = sender as FrameworkElement;
                isDragDropInEffect = false;
                ele.ReleaseMouseCapture();
            }
        } 

    }
}

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"       
        xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" 
        xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"  x:Class="WPFDragMoveBlend.MainWindow"       
        Title="MainWindow"  >
    
                    
            
                
            
        
    

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"       
        xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" 
        xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"  x:Class="WPFDragMoveBlend.MainWindow"       
        Title="MainWindow"  >