关于动态添加控件后移除控件的问题。。。。
public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            panel1.AutoScroll = true;

            panel1.ControlRemoved += new ControlEventHandler( panel1_ControlRemoved );
        }

        void panel1_ControlRemoved( object sender , ControlEventArgs e )
        {
            System.Collections.IEnumerator enumerator = this.panel1.Controls.GetEnumerator();
            int index = 0;
            while ( enumerator.MoveNext() )
            {
                Control ctrl = (Control)enumerator.Current;
                if ( index == 0 )
                    ctrl.Location = new Point( 0 , 0 );
                else
                    ctrl.Location = new Point( 0 , ( index * ( 60 + 3 ) ) );
                index++;
            }
        }
        int height = 60;

        private void button1_Click( object sender , EventArgs e )
        {
            Button btn = new Button();
            btn.Width = panel1.Width-4;
            btn.Height = height;