我正在运行一个 C# asp.net 网站。收银员通过在销售页面上的文本框中输入金额来生成代金券。
单击生成按钮时，它会调用数据库以输入和检索信息，一旦所有数据库插入完成，此信息就会传递给 iFrame，只要 iFrame visability = true，就只有iFrame 应该打印。我正在使用 javascript 打印聚焦的 iFrame。它曾经可以工作，但现在无缘无故停止工作。
请有人帮我找到问题。
销售按钮点击
rotected void btnVoucherGenerate_Click(object sender, EventArgs e)
{
if (Session["LoggedMemberID"] == null)
{
Session.Clear();
Response.Redirect("~/Login.aspx");
}
else
{
//Session.Remove("VoucherInfo");
Cashiers _cashier = (Cashiers)Session["CashierInfo"];
if (tbGeneratePIN.Text == string.Empty)
{
lblVoucherPIN.ForeColor = System.Drawing.Color.Red;
lblVoucherPIN.Text = "Please insert a amount for the voucher";
}
else
{
if (Convert.ToInt32(tbGeneratePIN.Text) < 5)
{
lblVoucherPIN.ForeColor = System.Drawing.Color.Red;
lblVoucherPIN.Text = "Minimum amount is " + _cashier.currencySymbol + " 5.00";
}
else
{
iThNkContext.Prepaid pre = new iThNkContext.Prepaid();
String newID = "";
newID = Guid.NewGuid().ToString().Replace("-", "");
newID = newID.Substring(newID.Length - 16);
newID = newID.ToUpper();
// Add PIN to Prepaid DB
try
{
btnVoucherGenerate.Visible = false;
btnGenerateAnother.Visible = true;
tbGeneratePIN.BackColor = Color.LightYellow;
tbGeneratePIN.Enabled = false;
pre.CurrencyID = _cashier.currencyID;
pre.AccountID = _cashier.accountID;
pre.Amount = Convert.ToDecimal(tbGeneratePIN.Text);
pre.SerialNumber = ("_");
pre.Pin = newID;
pre.TransactionTypeID = Convert.ToInt32(ConfigurationManager.AppSettings["Voucher"]);
pre.SalesUserID = _cashier.userID;
pre.SiteID = _cashier.siteID;
pre.SalesDate = DateTime.Now;
pre.IsCancelled = false;
pre.IsPrinted = false;
pre.IsActivated = true;
pre.IsRedeemed = false;
pre.IsActive = true;
db.Prepaids.InsertOnSubmit(pre);
db.SubmitChanges();
pre.SerialNumber = Convert.ToString(pre.PrepaidID).PadLeft(9, '0');
db.SubmitChanges();
String SegmentedOTP = newID;
SegmentedOTP = SegmentedOTP.Substring(0, 4) + "-" +
SegmentedOTP.Substring(4, 4) + "-" +
SegmentedOTP.Substring(8, 4) + "-" +
SegmentedOTP.Substring(12, 4);
// Log successful voucher sale.
_logs.successfulVoucherSales(_cashier.accountID, _cashier.siteID, _cashier.userID, pre.SerialNumber, pre.Pin, pre.Amount, _cashier.username);
Voucher _voucher = new Voucher();
_voucher.prepaidID = pre.PrepaidID;
_voucher.amount = pre.Amount;
_voucher.serialNumber = pre.SerialNumber;
_voucher.segmentedOTP = SegmentedOTP;
_voucher.accountTerms = pre.Account.AccountTerms.ToString();
_voucher.isPrinted = false;
Session["VoucherInfo"] = _voucher;
// update the database and set isPrinted = 1
db.SubmitChanges();
tbGeneratePIN.Text = string.Empty;
myIFrame.Visible = true;
pre.IsPrinted = true;
db.SubmitChanges();
lblVoucherPIN.ForeColor = System.Drawing.Color.Green;
lblVoucherPIN.Text = "Successful";
}
catch (Exception ex)
{
lblVoucherPIN.ForeColor = System.Drawing.Color.Red;
lblVoucherPIN.Text = ex.Message;
}
}
}
}
}
亚太证券交易所
<body id="Body">
<form id="form1" runat="server">
<link href="styles/Voucher.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" >
function PrintVoucher() {
window.focus();
window.print();
return;
}
</script>
<table id="PrintTable" runat="server">
<tr align="center" >
<td colspan="2" style="border-bottom:0.1px solid black;padding-bottom:5px;margin-bottom:5px;" >
<asp:Image ID="Logo" runat="server" Height="41px" ImageUrl="~/images/Logo.png"
Width="247px" />
</td>
</tr>
<tr>
<td colspan="2" style="line-height:8px;padding:5px 0;" >
<asp:Label ID="label1" runat="server" Text="SERIAL NUMBER:" Font-Names="Consolas" Font-Size="14px"></asp:Label>
</td>
</tr>
<tr>
<td colspan="2" style="line-height:12px;padding-bottom:12px;">
<asp:Label ID="lblSerialNumber" runat="server" Font-Names="Consolas" Font-Size="24px"></asp:Label>
</td>
</tr>
<tr>
<td colspan="2" style="line-height:8px;padding-bottom:5px;">
<asp:Label ID="label2" runat="server" Text="PIN:" Font-Names="Consolas" Font-Size="14px"></asp:Label>
</td>
</tr>
<tr>
<td colspan="2" style="line-height:12px;padding-bottom:12px;">
<asp:Label ID="lblPIN" runat="server" Font-Names="Consolas" Font-Size="24px"></asp:Label>
</td>
</tr>
<tr>
<td colspan="2" style="line-height:8px;padding-bottom:5px;">
<asp:Label ID="label3" runat="server" Text="AMOUNT:" Font-Names="Consolas" Font-Size="14px"></asp:Label>
</td>
</tr>
<tr>
<td colspan="2" style="border-bottom:0.7px solid black;line-height:12px;padding-bottom:8px;">
<asp:Label ID="lblAmount" runat="server" Font-Names="Consolas" Font-Size="24px"></asp:Label>
</td>
</tr>
<tr>
<td style="line-height:8px;" class="style1">
<asp:Label ID="label5" runat="server" Text="Account: " Font-Names="Arial" Font-Size="10px"></asp:Label>
</td>
<td style="line-height:8px;height:0px;">
<asp:Label ID="lblAccount" runat="server" Text="Supabets South Africa" Font-Names="Arial" Font-Size="10px"></asp:Label>
</td>
</tr>
<tr>
<td style="line-height:8px;" class="style2">
<asp:Label ID="label7" runat="server" Text="Site: " Font-Names="Arial" Font-Size="10px"></asp:Label>
</td>
<td style="line-height:8px;height:0px;">
<asp:Label ID="lblSite" runat="server" Font-Names="Arial" Font-Size="10px"></asp:Label>
</td>
</tr>
<tr>
<td style="line-height:8px;" class="style2">
<asp:Label ID="label6" runat="server" Text="Cashier: " Font-Names="Arial" Font-Size="10px"></asp:Label>
</td>
<td style="line-height:8px;height:0px;">
<asp:Label ID="lblCashier" runat="server" Font-Names="Arial" Font-Size="10px"></asp:Label>
</td>
</tr>
<tr>
<td style="line-height:8px;padding-bottom:3px;" class="style1">
<asp:Label ID="label8" runat="server" Text="Date: " Font-Names="Arial" Font-Size="10px"></asp:Label>
</td>
<td style="line-height:8px;padding-bottom:3px;">
<asp:Label ID="lblDate" runat="server" Font-Names="Arial" Font-Size="10px"></asp:Label>
</td>
</tr>
<tr>
<td colspan="2" style="border-bottom:1.2px solid black;font-weight:bold; font-family:Consolas;font-size:20px;line-height:12px">
</td>
</tr>
</table>
<%=Clients %>
</form>
后面的凭证 iFrame 代码
public partial class VoucherInformation : System.Web.UI.Page
{
public string Clients { get; set; }
protected void Page_Load(object sender, EventArgs e)
{
Voucher _voucher = (Voucher)Session["VoucherInfo"];
try
{
Cashiers _cashier = (Cashiers)Session["CashierInfo"];
if (!_voucher.isPrinted)
{
if (!String.IsNullOrEmpty(_voucher.accountTerms))
{
Clients = _voucher.accountTerms;
}
else
{
Clients = "";
}
lblAmount.Text = _cashier.currencySymbol + " " + _voucher.amount + ".00";
lblSerialNumber.Text = _voucher.serialNumber;
lblPIN.Text = _voucher.segmentedOTP;
lblSite.Text = _cashier.siteName;
lblAccount.Text = _cashier.accountName;
lblCashier.Text = _cashier.username;
lblDate.Text = Convert.ToString(DateTime.Now);
Page.ClientScript.RegisterStartupScript(this.GetType(), "Print", "PrintVoucher();", true);
_voucher.isPrinted = true;
}
}
catch (Exception)
{
_voucher.isPrinted = false;
}
}
}