Winform导入Excel数据到数据库

 public partial class ImportExcel : Form
    {
        AceessHelpers accessHelper = new AceessHelpers();
        public ImportExcel()
        {
            InitializeComponent();
        }

        private void btn_importExcelData(object sender, EventArgs e)
        {
            openFileDialog1.Title = "打开文件";
            openFileDialog1.ShowHelp = true;
            openFileDialog1.RestoreDirectory = true;

            //openFileDialog1.Filter = "Excel文件(*.xlsx)|(*.xls)";
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                this.txt_path.Text = openFileDialog1.FileName;
            }
        }

        private void btn_upload_Click(object sender, EventArgs e)
        {
            string path = openFileDialog1.FileName;

            System.Data.DataTable dt = GetDataTable(path);
            int result = ;
            for (int i = ; i < dt.Rows.Count; i++)
            {
                string sql = "insert into Products (ProductName,Area,ProductCategory,Customer,Style,StructureStyle,Width,Square,Other) values ('" +
                Convert.ToString(dt.Rows[i]["F1"]) + "','" + Convert.ToString(dt.Rows[i]["F2"]) + "','" + Convert.ToString(dt.Rows[i]["F3"]) + "','" +
                Convert.ToString(dt.Rows[i]["F4"]) + "','" + Convert.ToString(dt.Rows[i]["F5"]) + "','" + Convert.ToString(dt.Rows[i]["F6"]) + "','" +
                Convert.ToString(dt.Rows[i]["F7"]) + "','" + Convert.ToString(dt.Rows[i]["F8"]) + "','" + Convert.ToString(dt.Rows[i]["F9"]) + "')";

                int j = accessHelper.ReturnSql(sql);
                result = j++;
            }
            if (result > )
            {
                this.Close();
            }
        }

        /// <summary>
        /// 读取excel指定页中的内容
        /// </summary>
        /// <param name="strExcelFileName">excel路径</param>
        /// <returns></returns>
        protected System.Data.DataTable GetDataTable(string strExcelFileName)
        {
            //DataSet myDs = new DataSet();
            System.Data.DataTable dt = new System.Data.DataTable();
            DataRow myRow;
            object oMissing = System.Reflection.Missing.Value;
            Microsoft.Office.Interop.Excel.Application application = new Microsoft.Office.Interop.Excel.Application(); ;
            Microsoft.Office.Interop.Excel.Workbooks workbooks;
            //Microsoft.Office.Interop.Excel.Worksheet worksheet;
            Microsoft.Office.Interop.Excel.Workbook workbook;
            workbooks =  application.Workbooks;
            workbook = returnworkbook(strExcelFileName, workbooks);
            //worksheet = (Worksheet)workbook.Sheets[1];

            for (int sheetint = ; sheetint < ; sheetint++)// DateTime.Now.Day Convert.ToDateTime(TextBox4.Text.Trim()).Day;// myBook.Worksheets.Count;//能得到sheet的数量
            {
                Worksheet mySheet = (Worksheet)workbook.Worksheets[sheetint];
                int rowsint = mySheet.UsedRange.Cells.Rows.Count; //得到行数
                int columnsint = mySheet.UsedRange.Cells.Columns.Count;//得到列数
                if (sheetint == )
                {
                    for (int i = ; i <= columnsint; i++)
                    {
                        dt.Columns.Add("F" + i.ToString(), System.Type.GetType("System.String"));
                    }
                }
                for (int i = ; i <= rowsint; i++) //第一行为标题，不读取
                {
                    myRow = dt.NewRow();
                    for (int j = ; j <= columnsint; j++)
                    {

                        Range r = (Range)mySheet.Cells[i, j];
                        string strValue = r.Text.ToString();

                        string columnname = "F" + j.ToString();
                        myRow[columnname] = (strValue.Length ==  || strValue.Contains("#")) ? " " : strValue;
                    }
                    try
                    {
                        dt.Rows.Add(myRow);
                    }
                    catch { }
                }
            }
            workbook.Close(oMissing, oMissing, oMissing);
            workbooks.Close();
            application.Quit();

            return dt;
        }

        private Workbook returnworkbook(string filename, Workbooks works)  //这里是打一开一个工作表
        {
            Microsoft.Office.Interop.Excel.Workbook wk = works.Open(
             filename, Type.Missing, Type.Missing,
                     Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing,
                    Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing,
                     Type.Missing, Type.Missing);
            return wk;
        }

    }