下载并保存Excel文件

        WebRequest wr = WebRequest.Create(\"http://www.tase.co.il/TASE/Pages/ExcelExport.aspx?sn=he-IL_ds&enumTblType=AllSecurities&Columns=he-IL_Columns&Titles=he-IL_Titles&TblId=0&ExportType=1\");

        using (WebResponse response = wr.GetResponse())
        {
            using (Stream responseStream = response.GetResponseStream())
            {
                using (MemoryStream memoryStream = new MemoryStream())
                {
                    int count = 0;
                    do
                    {
                        count = responseStream.Read(buffer, 0, buffer.Length);
                        memoryStream.Write(buffer, 0, count);
                    } while (count != 0);
                    result = memoryStream.ToArray();
                    write_data_to_excel(result);

                }
            }
        }`

private void write_data_to_excel(byte[] input)
    {
        StreamWriter str = new StreamWriter(\"stockdata.xls\");

        for (int i = 0; input.Length > i; i++)
        {
            str.WriteLine(input[i].ToString());
        }
        str.Close();
    }