ASP.NET Excel导入导出SQL Server整理

一、Excel导入

在页面层添加FileUpload控件，控件位置：Standard里面，Calendar下面两个。设置其ID。
<asp:FileUpload ID="inputFile" runat="server" />

添加Button，btnUpload

  protected void btnUpload_Click(object sender, EventArgs e)
        {         
            DataSet ds = GetExcelData();
            InsertDB(ds);
        }


        /// <summary>
        /// 该方法实现从Excel中导出数据到DataSet中，其中filepath为Excel文件的绝对路径，sheetname为表示那个Excel表,此用Sheet1；
        /// </summary>
        /// <param name="ds">ds</param>
        private void InsertDB(DataSet ds)
        {
            SqlConnection _con = new SqlConnection(@"Data Source=STKWX028\SQLEXPRESS;Initial Catalog=Library;Integrated Security=True");
            SqlCommand cmd = new SqlCommand();
            cmd.Connection = _con;
            StringBuilder sb = new StringBuilder();
            if (ds.Tables[0].Rows.Count > 0)
            {
                for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
                {
                    sb.Append(" INSERT INTO bookInfo(bookID,bookName,author,publisher,price,readerID,readerType,bookStatus) VALUES('");
                    sb.Append(ds.Tables[0].Rows[i].ItemArray[0].ToString() + "','");
                    sb.Append(ds.Tables[0].Rows[i].ItemArray[1].ToString() + "','");
                    sb.Append(ds.Tables[0].Rows[i].ItemArray[2].ToString() + "','");
                    sb.Append(ds.Tables[0].Rows[i].ItemArray[3].ToString() + "','");
                    sb.Append(ds.Tables[0].Rows[i].ItemArray[4].ToString() + "','");
                    sb.Append(ds.Tables[0].Rows[i].ItemArray[5].ToString() + "','");
                    sb.Append(ds.Tables[0].Rows[i].ItemArray[6].ToString() + "','");
                    sb.Append(ds.Tables[0].Rows[i].ItemArray[7].ToString() + "' ) ");
                    cmd.CommandText = sb.ToString();
                }
            }
            _con.Open();
            int j = cmd.ExecuteNonQuery();
            _con.Close();
            if (j > 0)
            {
                lblMessage.Text = "Insert into DB table Sucessfully!";
            }
        }
        /// <summary>
        /// get data source from excel file
        /// </summary>
        /// <returns>dataset ds</returns>
        private DataSet GetExcelData()
        {
            DataSet ds = new DataSet();
            string filePath = inputFile.PostedFile.FileName;
            string connStr03 = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filePath + ";Extended Properties=Excel 8.0;"; ;
            string connStr07 = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filePath + ";Extended Properties='Excel 12.0;HDR=YES'";
            string queryStr = "SELECT * FROM [Sheet1$]";
            OleDbConnection conn03 = new OleDbConnection(connStr03);
            OleDbConnection conn07 = new OleDbConnection(connStr07);
            if (inputFile.HasFile)
            {
                string fileExt = System.IO.Path.GetExtension(inputFile.FileName);
                if (fileExt == ".xls")
                {
                    OleDbDataAdapter myAdapter = new OleDbDataAdapter(queryStr, conn03);
                    myAdapter.Fill(ds);
                }
                else if (fileExt == ".xlsx")
                {
                    OleDbDataAdapter myAdapter = new OleDbDataAdapter(queryStr, conn03);
                    myAdapter.Fill(ds);
                }
                else
                {
                    lblMessage.Text = "The file is not exist!";
                }

            }
            return ds;
        }

二、SQL Server导出Excel

这边注意，要添加引用Microsoft.Office.Interop.Excel。

     

/// <summary>
        /// put data source into dataset
        /// </summary>
        /// <returns>DataSet</returns>
        private static DataSet PutInDataSet()
        {
            string connStr = @"Data Source=STKWX028\SQLEXPRESS;Initial Catalog=Library;Integrated Security=True";
            string queryStr = @"SELECT * FROM bookInfo";
            SqlConnection _con = new SqlConnection(connStr);
            SqlDataAdapter adapter = new SqlDataAdapter(queryStr, connStr);
            DataSet ds = new DataSet();
            adapter.Fill(ds);
            return ds;
        }
        /// <summary>
        /// save the data as excel file
        /// </summary>
        /// <param name="ds"></param>
        private void SaveAsExcel(DataSet ds)
        {
            Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();
            if(excelApp != null)
            {
              Microsoft.Office.Interop.Excel.Workbook workbook = excelApp.Workbooks.Add(Missing.Value);
              Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];//get the sheet index
              for (int row = 0; row < ds.Tables[0].Rows.Count; row++)
              {
                for (int col = 0; col < ds.Tables[0].Columns.Count; col++)
                {
                    worksheet.Cells[row + 2, col + 1] = ds.Tables[0].Rows[row][col];
                }
              }
            }
          else
            {
                lblMessage.Text = "Fail to export because there's no excel installation!";
            }
            excelApp.Quit();
        }

        protected void btnExport_Click(object sender, EventArgs e)
        {
            DataSet ds = PutInDataSet();
            SaveAsExcel(ds);
            lblMessage.Text = "Saved";
        }

简化后的导出：（未提取方法）

   s

 SqlConnection _con = new SqlConnection(@"Data Source=STKWX028\SQLEXPRESS;Initial Catalog=Library;Integrated Security=True");
            string queryStr = "SELECT * FROM bookInfo";
            DataSet ds = new DataSet();
            SqlDataAdapter ad = new SqlDataAdapter(queryStr, _con);
            ad.Fill(ds);
            Microsoft.Office.Interop.Excel.Application excelApp = new Application();
            if (excelApp == null)
            {
                lblMessage.Text = "Fail to export because there's no excel installation!";
            }
            Workbook workbook = excelApp.Workbooks.Add(Missing.Value);
            Worksheet worksheet = (Worksheet)workbook.Worksheets[1];//get the sheet index
            for (int row = 0; row < ds.Tables[0].Rows.Count;row++ )//write data to excel
            {
                for (int col = 0; col < ds.Tables[0].Columns.Count;col++ )
                {
                    worksheet.Cells[row + 2, col + 1] = ds.Tables[0].Rows[row][col];
                }
            }
            excelApp.Quit();