Excel 导出和导入操作

导出

  //定义方法GetData(),返回一个数据表
    protected DataSet GetData()
    {
        //建立连接
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["StrCon"].ConnectionString);
        con.Open();
        string sqlstr = "select CarrierID,CName,EName,Code,DiscountRatio,DiscountValue,ImageURL,FullName from ConstantCarrier";
        //SqlCommand cmd = new SqlCommand(sqlstr,con);
        SqlDataAdapter sda = new SqlDataAdapter(sqlstr, con);
        DataSet ds = new DataSet();
        sda.Fill(ds, "excel");
        con.Close();
        return ds;
    }

    //生成Excel文件的代码
    protected void ExportExcel()
    {
        Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
        Microsoft.Office.Interop.Excel.Workbook wb = excel.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);    // 创建工作簿
        Microsoft.Office.Interop.Excel.Worksheet ws = (Microsoft.Office.Interop.Excel.Worksheet)wb.Worksheets[1];                          // 创建工作页
        DataSet ds = GetData();
        int iMaxRow = ds.Tables["Excel"].Rows.Count;
        int iMaxCol = ds.Tables["Excel"].Columns.Count;
        // 设置格式
        ws.get_Range(ws.Cells[1, 1], ws.Cells[1, iMaxCol]).Font.Name = "黑体";
        ws.get_Range(ws.Cells[1, 1], ws.Cells[1, iMaxCol]).Font.Bold = true;
        ws.get_Range(ws.Cells[1, 1], ws.Cells[iMaxRow + 1, iMaxCol]).Borders.LineStyle = 1;

        // 设置标题
        excel.Cells[1, 1] = "CarrierID";
        excel.Cells[1, 2] = "CName";
        excel.Cells[1, 3] = "EName";
        excel.Cells[1, 4] = "Code";
        excel.Cells[1, 5] = "DiscountRatio";
        excel.Cells[1, 6] = "DiscountValue";
        excel.Cells[1, 7] = "ImageURL";
        excel.Cells[1, 8] = "FullName";
    
       

        // 填充数据
        for (int iRow = 0; iRow < iMaxRow; iRow++)
        {
            for (int iCol = 0; iCol < iMaxCol; iCol++)
            {
                excel.Cells[iRow + 2, iCol + 1] = ds.Tables["Excel"].Rows[iRow][iCol].ToString();
            }
        }
        // 保存Excel
        excel.Save(txtexcel.Text.Trim());
        // 打开Excel
        excel.Visible = true;
    }


    //导出到Excel按钮
    protected void Button1_Click1(object sender, EventArgs e)
    {
        ExportExcel();
    }

导入

protected void Button1_Click(object sender, EventArgs e)
    {
        HttpPostedFile file = this.FileUpload1.PostedFile;//获得要上传的文件
        string fileName = System.IO.Path.GetFileName(file.FileName);//获取文件的名称
        if (fileName == "")
        {
            Response.Write("<script>alert('请选择导入的文件');</script>");
        }
        else
        {
            string ExcelHz = System.IO.Path.GetExtension(FileUpload1.FileName);
            if (ExcelHz != ".xls")
            {
                Response.Write("请上传Excel文件的格式");
            }
            else
            {
                file.SaveAs(System.Web.HttpContext.Current.Request.MapPath("upload/") + fileName);
                // Session["fileName"] = fileName;


                //获取excel问里的sheet1，sheet2，sheet3，文件名组。
                string[] name = new string[1000];
                Microsoft.Office.Interop.Excel.ApplicationClass excel = new ApplicationClass();
                object miss = System.Reflection.Missing.Value;
                Workbook wbs = excel.Workbooks.Open(Server.MapPath("upload/" + fileName), miss, miss, miss, miss, miss, miss, miss, miss, miss, miss, miss, miss, miss, miss);
                for (int i = 1; i <= wbs.Worksheets.Count; i++)
                {
                    Worksheet sheet = (Worksheet)excel.Sheets.get_Item(i);
                    name[i] = sheet.Name;
                    NewMethod(fileName, name[i]);
                }
                excel.ActiveWorkbook.Close(false, null, null);
                Response.Write("<script>alert('成功');</script>");
            }

        }

    }

    /// <summary>
    /// 将excel导入数据库的方法
    /// </summary>
    /// <param name="fileName">excel的文件名</param>
    /// <param name="TableName">excel表的名字</param>
    private void NewMethod(string fileName, string TableName)
    {
        OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("upload/" + fileName) + ";Extended Properties='Excel 5.0;HDR=YES;IMEX=1'");
        OleDbDataAdapter oda = new OleDbDataAdapter("select * from [" + TableName + "$]", conn);
         SqlConnection con1 = new SqlConnection(ConfigurationManager.ConnectionStrings["StrConQ"].ToString());
        //string sqldata = "select * from ConstantAirPort";
        //DataSet ds = DBHelper.Query(sqldata);
        for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
        {
            string AirportID = ds.Tables[0].Rows[i]["AirportID"].ToString(); //姓名
            string CName = ds.Tables[0].Rows[i]["CName"].ToString();//性别
            string EName = ds.Tables[0].Rows[i]["EName"].ToString();//年龄  
            string Code = ds.Tables[0].Rows[i]["Code"].ToString();//年龄 
            string CityID = ds.Tables[0].Rows[i]["CityID"].ToString();//年龄   
            string CityCName = ds.Tables[0].Rows[i]["CityCName"].ToString();//年龄   
            string FullName = ds.Tables[0].Rows[i]["FullName"].ToString();//年龄   


            string sql = "insert into ConstantAirPort(AirportID,CName,EName,Code,CityID,CityCName,FullName) values('" + AirportID + "','" + CName + "','" + EName + "','" + Code + "','" + CityID + "','" + CityCName + "','" + FullName + "')";
            SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["StrConQ"].ToString());
            con.Open();
            SqlCommand cmd = new SqlCommand(sql, con);
            try
            {
                cmd.ExecuteNonQuery();

            }
            catch (Exception)
            {
                throw;
            }
            finally
            {
                con.Close();
            }
        }

    }