Execute Process in Threading Pool

 using System.Threading;

 public class ImportData()
 {
  public void Import()
  {
   ThreadPool.QueueUserWorkItem(new WaitCallback(SendImportDataRequest), new ImportParameter()
    {
     PageURL = "ImportData.aspx",
     CurrentUpload = enumUploadData.CustodianData,
     XMLCustodianIds = sbCustodianId.ToString().Substring(1),
     ImportDate = txtImportDate.Text.ToDateTimeValue(),
     LoginContactId = this.LoginContactId,
     LoginUserId = this.LoginUserId
    });
  }
  
  public static void SendImportDataRequest(object Parameter)
  {
   ImportParameterDTO objParameter = (ImportParameterDTO)Parameter;
   string urlEncodedUserInput = string.Format("StartImport={0}&CurrentUpload={1}&CustodianIds={2}&ImportDate={3}&LoginContactId={4}&LoginUserId={5}"
           , (int)enumYesNo.Yes            // 0
           , objParameter.CurrentUpload    // 1
           , objParameter.XMLCustodianIds     // 2
           , objParameter.ImportDate.ToShortDateString() // 3
           , objParameter.LoginContactId   // 4
           , objParameter.LoginUserId      // 5
          );

   System.Net.WebRequest httpRequest = System.Net.WebRequest.Create(objParameter.PageURL);

   httpRequest.Method = "POST";
   httpRequest.ContentType = "application/x-www-form-urlencoded;charset=utf-8";
   byte[] bytedata = System.Text.Encoding.UTF8.GetBytes(urlEncodedUserInput);
   httpRequest.ContentLength = bytedata.Length;
   System.IO.Stream requestStream = httpRequest.GetRequestStream();
   requestStream.Write(bytedata, 0, bytedata.Length);
   requestStream.Close();

   try
   {
    System.Net.WebResponse res = httpRequest.GetResponse();
   }
   catch (Exception ex)
   {
   }
  }
 }
 
 public class ImportParameter()
 {
        public string PageURL { get; set; }
        public enumUploadData CurrentUpload { get; set; }
        public string XMLCustodianIds { get; set; }
        public DateTime ImportDate { get; set; }
        public long LoginContactId { get; set; }
        public long LoginUserId { get; set; }
 }