how to get one page dropdownlist values in another page?

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C#

ASP.NET

hi how to get selected dropdown values from one page to another page?

here is some code

this code is in one page

int.TryParse(cmbCompany.SelectedValue, out companyID);
      if (DateTime.TryParse(radtxtDateFrom.Text, out dtTemp))
      {
          startDate = dtTemp;
      }
      if (DateTime.TryParse(radtxtDateTo.Text, out dtTemp))
      {
          endDate = dtTemp;
      }

and this selected value i want in another page
in second page i used like this

    string strCompanyID = string.Empty;
 Int32? companyID;
int Company;
if (Int32.TryParse(strCompanyID, out Company) == true)
          companyID = Company;
      else
          companyID = 0;

here am getting companyID as 0 only..can any one suggest me ??

thank you