C#将Excel导入到Access数据库表(winForm版）

// <summary>
        /// 获取Excel文件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog dlg = new OpenFileDialog();
            dlg.Filter = "Excel文件(*.xls)|*.xls";
            if (dlg.ShowDialog() == DialogResult.OK)
            {
                string filePath = dlg.FileName;
                this.textBox1.Text = filePath;
            }
        }

        /// <summary>
        /// 导入Excel文件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button2_Click(object sender, EventArgs e)
        {
            if (textBox1.Text.Length == 0)
            {
                MessageBox.Show("请选择导入数据的Execl文件");
            }
            else
            {
                try