add several panels into a picturebox in runtime and try to move panels every place in picturebox

Question

hi

i want add panels to a picturebox in runtime and i want can move them to every place in picturebox

i wirte this code but when i put a panel control and test the code it run ok but when i add panel in run time it seems that some code not performance, for example

 private void panel1_MouseDown(object sender, MouseEventArgs e)
        {
            Panel mypic = (Panel)sender;
            mypic.DoDragDrop(mypic.BackgroundImage, DragDropEffects.Move);
            panel1.Location = loc;
        }

or like this that in design mode i set that on the control events;

now i put my page code completely

how can i add panels in run time and set this code for every panel??

my code is here for 1 panel:

 using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace ContrloCircuit
{
    public partial class Form1 : Form
    {
        protected Point loc;
        private PictureBox selectpic;
        protected Panel panel1 = new Panel();

        public Form1()
        {
            InitializeComponent();
            Image img = Image.FromFile(@"E:dog.jpg");
            this.picBox.AllowDrop = true;
            this.picBox.DragDrop += new System.Windows.Forms.DragEventHandler(this.picBox_DragDrop);
            this.picBox.DragEnter += new System.Windows.Forms.DragEventHandler(this.picBox_DragEnter);
        }

        private void pictureBox1_Click(object sender, EventArgs e)
        {
            
           
            picBox.Controls.Add(panel1);
            panel1.BackgroundImage = pictureBox1.Image;
            panel1.Height = pictureBox1.Height;
            panel1.Width = pictureBox1.Width;
            panel1.AllowDrop = true;

           // panel1.BackgroundImage = pictureBox1.Image;
         //   panel1.AllowDrop = true;
            
        }

        private void picBox_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.Bitmap))
            {
                e.Effect = DragDropEffects.Move;
            }
            else
            {
                e.Effect = DragDropEffects.None;
            }
        }

        private void picBox_DragDrop(object sender, DragEventArgs e)
        {
           // PictureBox picbox = (PictureBox)sender;
          //  Graphics g = picbox.CreateGraphics();
           // g.DrawImage((Image)e.Data.GetData(DataFormats.Bitmap), myloc);
           // label1.Text = myloc.ToString();
            PictureBox destination = (PictureBox)sender;
            
            destination.Image = (Bitmap)e.Data.GetData(typeof(Bitmap)); 
        }

        private void panel1_MouseDown(object sender, MouseEventArgs e)
        {
            Panel mypic = (Panel)sender;
            mypic.DoDragDrop(mypic.BackgroundImage, DragDropEffects.Move);
            panel1.Location = loc;
        }

        private void panel1_DragOver(object sender, DragEventArgs e)
        {
           // myloc.X = e.X;
           // myloc.Y = e.Y;
            panel1.Location = loc;
        }


        private void timer1_Tick(object sender, EventArgs e)
        {
            loc = Cursor.Position;
            label1.Text = loc.ToString();
        }

        private void panel1_DragEnter(object sender, DragEventArgs e)
        {
            panel1.Location = loc;
        }
    }
}