用C#设计窗口程序，实现鼠标能随意拖拽

作为多屏视频监控
要实现：
10x10的方格，（用什么控件没有限制）显示一百个画面，用户用鼠标拖动可以把鼠标覆盖的格子单独输出。
比如能任意拖拽出3x4， 5x6的画面。
只需实现这个拖拽功能就行，求各位大神指点下 本人小白。

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

namespace WindowsApplication1
{

public partial class Form1 : Form
{
    Point pt;
    bool moves = true;

    public Form1()
    {
        InitializeComponent();
    }

private void button1_Click(object sender, EventArgs e)
{
if (moves == true)
{
MessageBox.Show("sfdfdf");
}
}

    private void button1_MouseDown(object sender, MouseEventArgs e)
    {
        pt = Cursor.Position;
    }

    private void button1_MouseMove(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Left)
        {
            int px = Cursor.Position.X - pt.X;
            int py = Cursor.Position.Y - pt.Y;
            button1.Location = new Point(button1.Location.X + px, button1.Location.Y + py);
            pt = Cursor.Position;
            moves = false;
        } 
    }

    private void button1_MouseUp(object sender, MouseEventArgs e)
    {
        moves = true;
    }
}

}

思路就是改变你这100个控件所在布局控件的位置就行了