فایل آپلود شده مشکل داره و نمیشه دانلودش کرد

اگر امکان داره کدهاتون رو اینجا قرار بدین

با تشکر

کد بخش پرداخت

 public static int Pay(string Descriptions, int Price, bool Pay, bool Credit, string Mobile,string Email, string Master, string Page,long Code,long PersonalCode, string MerchantCode, HttpResponse Response)
    {
        DarolzahraSite.BLL.Settings stt = new DarolzahraSite.BLL.Settings();
        DarolzahraSite.BLL.Payments pay = new DarolzahraSite.BLL.Payments();
        System.Net.ServicePointManager.Expect100Continue = false;
        DarolzahraSite.ZarinPal.PaymentGatewayImplementationServicePortTypeClient zp = new DarolzahraSite.ZarinPal.PaymentGatewayImplementationServicePortTypeClient();
        string Authority;
        String strPathAndQuery = HttpContext.Current.Request.Url.PathAndQuery;
        String strUrl = HttpContext.Current.Request.Url.AbsoluteUri.Replace(strPathAndQuery, string.Empty);
        int Status = zp.PaymentRequest(MerchantCode, int.Parse(Convert.ToString(Price)), Descriptions, Email, Mobile, strUrl + "/Verify/" + EncryptLink(Master + "," + Page + "," + Code+ "," + tblPayments.Rows[0][0] + "," + PersonalCode), out Authority);
        if (Status == 100)
        Response.Redirect("https://www.zarinpal.com/pg/StartPay/" + Authority);
        return Status;
    }

کد بخش verify

  protected void Page_Load(object sender, EventArgs e)
        {
            string MerchantCode = "My MerchantCode";
            int CardPrice = 100;
            if (Request.QueryString["Status"] != "" && Request.QueryString["Status"] != null && Request.QueryString["Authority"] != "" && Request.QueryString["Authority"] != null)
            {
                if (Request.QueryString["Status"].ToString().Equals("OK"))
                {
                    long RefID;
                    System.Net.ServicePointManager.Expect100Continue = false;
                    ZarinPal.PaymentGatewayImplementationServicePortTypeClient zp = new ZarinPal.PaymentGatewayImplementationServicePortTypeClient();
                    int Status = zp.PaymentVerification(MerchantCode, Request.QueryString["Authority"].ToString(), CardPrice, out RefID);
                    if (Status == 100)
                    {
                        lblMessage.ForeColor = System.Drawing.Color.Green;
                        lblMessage.Text = SharedMembers.ZarinPalError(Status);
                        lblReference.Text = " کد پیگیری:" + RefID;
                    }
                    else
                    {
                        lblMessage.ForeColor = System.Drawing.Color.Red;
                        lblMessage.Text = SharedMembers.ZarinPalError(Status);
                        lblReference.Text = " کد پیگیری:" + RefID;
                    }
                }
                else
                {
                    lblMessage.ForeColor = System.Drawing.Color.Red;
                    lblMessage.Text = "خطا!: " + Request.QueryString["Authority"].ToString() + " Status: " + Request.QueryString["Status"].ToString();
                }
            }
            else
            {
                lblMessage.ForeColor = System.Drawing.Color.Red;
                lblMessage.Text = "ورودی نامعتبر است.";
            }
        }

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