#endregion

        #region 方法

        #region 绘制DataGridView以及下拉DataGridView

        private void DrawDataGridView()

        {

            DataGridView dataGridView = new DataGridView();

            dataGridView.ScrollBars = ScrollBars.Both;

            dataGridView.AutoSize = true;

            dataGridView.AllowUserToAddRows = false;

            dataGridView.AllowUserToDeleteRows = false;

            dataGridView.AllowUserToResizeRows = false;

            dataGridView.Dock = DockStyle.Fill;

            dataGridView.DataSource = null;

            dataGridView.BackgroundColor = SystemColors.Control;

            dataGridView.BorderStyle = BorderStyle.None;

            dataGridView.ReadOnly = true;

            dataGridView.AllowUserToAddRows = false;

            dataGridView.RowHeadersVisible = false;

            dataGridView.SelectionMode = DataGridViewSelectionMode.FullRowSelect;

            dataGridView.DoubleClick += new EventHandler(dataGridView_DoubleClick);

            dataGridView.KeyDown += new KeyEventHandler(dataGridView_KeyDown);

           //设置DataGridView的数据源

            Form frmDataSource = new Form();

            frmDataSource.Controls.Add(dataGridView);

            dataGridViewHost = new ToolStripControlHost(dataGridView);

            dataGridViewHost.AutoSize = m_blPopupAutoSize;

            TextBox textBox = new TextBox();

            textBox.Width = ;

            textBox.TextChanged += new EventHandler(textBox_TextChanged);

            textBox.KeyDown += new KeyEventHandler(textBox_KeyDown);

            textBoxHost = new ToolStripControlHost(textBox);

            textBoxHost.AutoSize = false;

            dropDown = new ToolStripDropDown();

            dropDown.Items.Add(textBoxHost);

            dropDown.Items.Add(dataGridViewHost);

            dropDown.AutoSize = true;

        }

        #endregion

public partial class Form2 : Form

    {

        private ToolStripControlHost dataGridViewHost;

        private ToolStripDropDown dropDown;

        public Form2()

        {

            InitializeComponent();

        }

        private void Form2_Load(object sender, EventArgs e)

        {

            DataGridView dataGridView = new DataGridView();

            //Form frmDataSource = new Form();

            //frmDataSource.Controls.Add(dataGridView);

            //或者这个窗体的任何一个容器类添加这个dataGridView

            dataGridView.Dock = DockStyle.Fill;

            dataGridView.DataSource = createStudentTable();

            //设置DataGridView的数据源

            dataGridViewHost = new ToolStripControlHost(dataGridView);

            dropDown = new ToolStripDropDown();      

            dropDown.Items.Add(dataGridViewHost);

            contextMenuStrip1.Items.Add(dataGridViewHost);

        }

        /// <summary>

        /// 生产测试数据

        /// </summary>

        /// <returns></returns>

        private DataTable createStudentTable()

        {

            DataTable dt = new DataTable();

            DataColumn dc = new DataColumn("学号");

            dt.Columns.Add(dc);

            dc = new DataColumn("姓名");

            dt.Columns.Add(dc);

            dc = new DataColumn("性别");

            dt.Columns.Add(dc);

            dc = new DataColumn("专业");

            dt.Columns.Add(dc);

            dc = new DataColumn("入学年份");

            dt.Columns.Add(dc);

            DataRow dr = dt.NewRow();

            dr["学号"] = "";

            dr["姓名"] = "刘德华";

            dr["性别"] = "男";

            dr["专业"] = "影视表演";

            dr["入学年份"] = "";

            dt.Rows.Add(dr);

            dr = dt.NewRow();

            dr["学号"] = "";

            dr["姓名"] = "张学友";

            dr["性别"] = "男";

            dr["专业"] = "计算机科学技术";

            dr["入学年份"] = "";

            dt.Rows.Add(dr);

            dr = dt.NewRow();

            dr["学号"] = "";

            dr["姓名"] = "郭富城";

            dr["性别"] = "男";

            dr["专业"] = "哲学系";

            dr["入学年份"] = "";

            dt.Rows.Add(dr);

            dr = dt.NewRow();

            dr["学号"] = "";

            dr["姓名"] = "柳岩";

            dr["性别"] = "女";

            dr["专业"] = "模特专业（裸模方向）";

            dr["入学年份"] = "";

            dt.Rows.Add(dr);

            dr = dt.NewRow();

            dr["学号"] = "";

            dr["姓名"] = "郭德纲";

            dr["性别"] = "男";

            dr["专业"] = "中文系";

            dr["入学年份"] = "";

            dt.Rows.Add(dr);

            return dt;

        }

    }