Moving a custom border with no border style[c#]

[Psycho_Coder]

Here is a little border I made out of a PictureB ox, You can simple move it around.

Source:

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

namespace WindowsFormsApplication6
{
    public partial class Form1 : Form
    {
        int border;
        int MoveX;
        int MoveY;
        public Form1()
        {
            InitializeComponent();
           
        }

        private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
        {
            border = 1;
            MoveX = e.Y;
            MoveY = e.Y;

        }

        private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
        {
            border = 0;
        }

        private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
        {
            if (border == 1)
            {
                this.SetDesktopLocation(MousePosition.X - MoveX, MousePosition.Y - MoveY); 
            }
        }
    }
}

​