Uploading an Excel sheet and importing the data into SQL Server database

Question

I am developing this simple application to upload an Excel file (.xlsx) and import the data present in that Excel worksheet into a SQL Server Express database i

Answer 1

 protected void btnUpload_Click(object sender, EventArgs e)
    {
          if (Page.IsValid)
            {
                bool logval = true;
                if (logval == true)
                {
                    String img_1 = fuUploadExcelName.PostedFile.FileName;
                    String img_2 = System.IO.Path.GetFileName(img_1);
                    string extn = System.IO.Path.GetExtension(img_1);

                    string frstfilenamepart = "";
                    frstfilenamepart = "Emp" + DateTime.Now.ToString("ddMMyyyyhhmmss"); ;
                    UploadExcelName.Value = frstfilenamepart + extn;
                    fuUploadExcelName.SaveAs(Server.MapPath("~/Emp/EmpExcel/") + "/" + UploadExcelName.Value);
                    string PathName = Server.MapPath("~/Emp/EmpExcel/") + "\\" + UploadExcelName.Value;
                    GetExcelSheetForEmp(PathName, UploadExcelName.Value);

                }
            }


    }

    private void GetExcelSheetForEmp(string PathName, string UploadExcelName)
    {
        string excelFile = "EmpExcel/" + PathName;
        OleDbConnection objConn = null;
        System.Data.DataTable dt = null;
        try
        {

            DataSet dss = new DataSet();
            String connString = "Provider=Microsoft.ACE.OLEDB.12.0;Persist Security Info=True;Extended Properties=Excel 12.0 Xml;Data Source=" + PathName;
            objConn = new OleDbConnection(connString);
            objConn.Open();
            dt = objConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
            if (dt == null)
            {
                return;
            }
            String[] excelSheets = new String[dt.Rows.Count];
            int i = 0;
            foreach (DataRow row in dt.Rows)
            {
                if (i == 0)
                {
                    excelSheets[i] = row["TABLE_NAME"].ToString();
                    OleDbCommand cmd = new OleDbCommand("SELECT * FROM [" + excelSheets[i] + "]", objConn);
                    OleDbDataAdapter oleda = new OleDbDataAdapter();
                    oleda.SelectCommand = cmd;
                    oleda.Fill(dss, "TABLE");

                }
                i++;
            }
            grdByExcel.DataSource = dss.Tables[0].DefaultView;
            grdByExcel.DataBind();


        }

        catch (Exception ex)
        {
            ViewState["Fuletypeidlist"] = "0";
            grdByExcel.DataSource = null;
            grdByExcel.DataBind();
        }
        finally
        {
            if (objConn != null)
            {
                objConn.Close();
                objConn.Dispose();
            }
            if (dt != null)
            {
                dt.Dispose();
            }
        }

    }