C#

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;

namespace _200_Test2
{
    class Program
    {
        static void Main(string[] args)
        {

            {
                WebRequest request = WebRequest.Create("http://www.cnn.com/");
                try
                {
                    using (WebResponse response = request.GetResponse())
                    {
                        HttpWebResponse httpResponse = (HttpWebResponse)response;
                        Console.WriteLine(httpResponse.StatusCode);
                        Console.ReadKey();
                    }
                }
                catch (WebException e)
                {
                    using (WebResponse response = e.Response)
                    {
                        HttpWebResponse httpResponse = (HttpWebResponse)response;
                        Console.WriteLine("Error code: {0}", httpResponse.StatusCode);
                        using (Stream data = response.GetResponseStream())
                        {
                            string text = new StreamReader(data).ReadToEnd();
                            Console.WriteLine(text);
                        }
                    }
                }
            }
        }
    }
    
}

Exception de HRESULT : 0x800A03EC

public static void LoadViewData()
      {
          var target = (ExcelReference)XlCall.Excel(XlCall.xlfCaller);
          var sheetName = (string)XlCall.Excel(XlCall.xlSheetNm, target);
          var application = (Microsoft.Office.Interop.Excel.Application)ExcelDnaUtil.Application;
          var sheet = application.Sheets[Regex.Replace(sheetName, @"\[[^]]*\]", string.Empty)];
          object[,] result = LoadFromDbData();
          var startCell =sheet.Cells[target.RowFirst + 1, target.ColumnFirst];
          var endCell =sheet.Cells[target.RowFirst+ result.GetUpperBound(0) - result.GetLowerBound(0) + 1,
              target.ColumnFirst+ result.GetUpperBound(1) - result.GetLowerBound(1) + 1];
          var writeRange = sheet.Range[startCell, endCell];

          writeRange.Value2 = result;

      }

writeRange.Value2 = result;