I am running through this error and I dont know how to fix it. Could you please tell how to fix it in my code. I provide codes below. Please help
namespace PledgeReport
{
using ASDsoftswitch;
using ClosedXML.Excel;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.OleDb;
using System.Drawing;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Mail;
using System.Net.Mime;
using System.Runtime.InteropServices;
using System.Text.RegularExpressions;
using System.Threading;
using System.Web;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
public class Default : Page
{
protected Button btnCalculate;
protected Button btnExport;
protected HtmlInputText datePickerE ...
Go to the complete details ...