C Sharp Method problem

private void SaveData()
   {

       try
       {
           if (ddlAction.SelectedValue == "")
           {
               return;
           }
           else
           {
               if (ddlAction.SelectedValue == "Approved")
               {
                   Param();

               }
               if (ddlAction.SelectedValue == "Recheck")
               {
                   Param();
               }
               if (ddlAction.SelectedValue == "Rejected")
               {
                   Param();
               }
            }

           ConManager.CommitTransaction();
           Audit.AuditProcess(Session["USER"].ToString(),"","MachinaryDetails","TERMSHR","","S",ddlAction.SelectedValue.Trim());
           //Audit.AuditProcess(Session["USER"].ToString(), txtAACode.Text.Trim(), "AdvanceAdjustment", "TERMSHR", "Advance Approval", "S", ddlAction.SelectedValue.Trim());
       }
       catch (Exception ex)
       {
           throw ex;
       }
       finally
       {
           ConManager.CloseConnection();
       }