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私はユニ・コースワークのための小さなオンラインストアを作ろうとしています。私はこのエラーを理解できませんでした。まずここに注文ページのコードがあります。今ここにSystem.FormatException：入力文字列の形式が正しくありません
<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Dim strSessionID As String
Dim strItem As String
Dim strQuantity As String
strSessionID = Session.SessionID
strItem = Session("Item")
strQuantity = Session("Quantity")
tbxItem.Text = strItem
tbxQuantity.Text = strQuantity
End sub
Protected Sub btnAddOrder_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim strItem As String
Dim strQuantity As String
Dim strFullName As String
Dim strAddressLine As String
Dim intPhoneNumber As Integer
Dim intCardNumber As Integer
Dim strNameOnCard As String
Dim strExpirationDate As String
strItem = tbxItem.Text
strQuantity = tbxQuantity.Text
strFullName = tbxFullName.Text
strAddressLine = tbxAddressLine.Text
intPhoneNumber = tbxPhoneNumber.Text
intCardNumber = tbxCardNumber.Text
strNameOnCard = tbxNameOnCard.Text
strExpirationDate = tbxExpirationDate.Text
Dim strDatabaseNameAndLocation As String
strDatabaseNameAndLocation = Server.MapPath("pcland.mdb")
Dim strSQLCommand As String
strSQLCommand = "INSERT INTO orders(Item, Quantity, FullName, AddressLine, PhoneNumber, CardNumber, NameOnCard, ExpirationDate) " & _
"Values ('" & strItem & "','" & strQuantity & "','" & strFullName & "', '" & strAddressLine & "', '" & intPhoneNumber & "', '" & intCardNumber & "', '" & strNameOnCard & "', '" & strExpirationDate & "');"
Dim objOleDbConnection As System.Data.OleDb.OleDbConnection
objOleDbConnection = New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.Oledb.4.0; Data Source=" & strDatabaseNameAndLocation)
objOleDbConnection.Open()
Dim objOleDbCommand As System.Data.OleDb.OleDbCommand
objOleDbCommand = New System.Data.OleDb.OleDbCommand(strSQLCommand, objOleDbConnection)
objOleDbCommand.ExecuteNonQuery()
objOleDbConnection.Close()
strSQLCommand = "SELECT orders.* FROM orders ORDER BY orders.Price DESC;"
objOleDbConnection = New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.Oledb.4.0; Data Source=" & strDatabaseNameAndLocation)
tbxItem.Text = ""
tbxQuantity.Text = ""
tbxFullName.Text = ""
tbxAddressLine.Text = ""
tbxPhoneNumber.Text = ""
tbxCardNumber.Text = ""
tbxNameOnCard.Text = ""
tbxExpirationDate.Text = ""
lblConfirmationMessage.Text = "Thank you for order."
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>PC land | Cart</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<link href="#" rel="stylesheet" type="text/css" />
</head>
<body>
<form id="webform" runat="server">
<div>
<table border="0">
<tr>
<td>Item:</td>
<td><asp:TextBox ID="tbxItem" ReadOnly="True" runat="server"></asp:TextBox></td>
</tr>
<tr>
<td>Quantity:</td>
<td><asp:TextBox ID="tbxQuantity" ReadOnly="True" runat="server"></asp:TextBox></td>
</tr>
<tr>
<td>Full Name:</td>
<td><asp:TextBox ID="tbxFullName" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvFullName" runat="server" ControlToValidate="tbxFullName"
Display="Dynamic">You must enter your full name</asp:RequiredFieldValidator></td>
</tr>
<tr>
<td>Address Line:</td>
<td><asp:TextBox ID="tbxAddressLine" TextMode="MultiLine" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvAddressLine" runat="server" ControlToValidate="tbxAddressLine"
Display="Dynamic">You must enter your address</asp:RequiredFieldValidator></td>
</tr>
<td>Phone Number:</td>
<td><asp:TextBox ID="tbxPhoneNumber" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvPhoneNumber" runat="server" ControlToValidate="tbxPhoneNumber"
Display="Dynamic">You must enter your phone number (No spaces or dashs)</asp:RequiredFieldValidator></td>
</tr>
<td>Card Number:</td>
<td><asp:TextBox ID="tbxCardNumber" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvCardNumber" runat="server" ControlToValidate="tbxCardNumber"
Display="Dynamic">You must enter the card number (No spaces or dashs)</asp:RequiredFieldValidator></td>
</tr>
<td>Name On Card:</td>
<td><asp:TextBox ID="tbxNameOnCard" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvNameOnCard" runat="server" ControlToValidate="tbxNameOnCard"
Display="Dynamic">You must enter the full name that is on the card </asp:RequiredFieldValidator></td>
</tr>
<td>Expiration Date:</td>
<td><asp:TextBox ID="tbxExpirationDate" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvExpirationDate" runat="server" ControlToValidate="tbxExpirationDate"
Display="Dynamic">You must enter the expiration date (Example format: 01/02/90)</asp:RequiredFieldValidator></td>
</tr>
<tr>
<td><asp:Button id="btnAddRecord" runat="server" onclick="btnAddOrder_Click" postbackurl="confirm.aspx" text="Submit" /></td><br />
</tr>
</table>
<asp:Label ID="lblConfirmationMessage" runat="server"></asp:Label><br />
</div>
</form>
<div id="footer">Copyright © 2012 PC Land - All Rights Reserved</div>
</body>
</html>
は、ユーザーが注文ページに選んだという選択肢が表示されるはずです確認ページのコードです
<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
Dim tbxItem As TextBox
Dim tbxQuantity As TextBox
Dim tbxFullName As TextBox
Dim tbxAddressLine As TextBox
Dim tbxPhoneNumber As TextBox
Dim tbxCardNumber As TextBox
Dim tbxNameOnCard As TextBox
Dim tbxExpirationDate As TextBox
Dim strItem As String
Dim strQuantity As String
Dim strFullName As String
Dim strAddressLine As String
Dim intPhoneNumber As Integer
Dim intCardNumber As Integer
Dim strNameOnCard As String
Dim strExpirationDate As String
tbxItem = CType(Me.PreviousPage.FindControl("tbxItem"), TextBox)
tbxQuantity = CType(Me.PreviousPage.FindControl("tbxQuantity"), TextBox)
tbxFullName = CType(Me.PreviousPage.FindControl("tbxFullName"), TextBox)
tbxAddressLine = CType(Me.PreviousPage.FindControl("tbxAddressLine"), TextBox)
tbxPhoneNumber = CType(Me.PreviousPage.FindControl("tbxPhoneNumber"), TextBox)
tbxCardNumber = CType(Me.PreviousPage.FindControl("tbxCardNumber"), TextBox)
tbxNameOnCard = CType(Me.PreviousPage.FindControl("tbxNameOnCard"), TextBox)
tbxExpirationDate = CType(Me.PreviousPage.FindControl("tbxExpirationDate"), TextBox)
strItem = tbxItem.Text
strQuantity = tbxQuantity.Text
strFullName = tbxFullName.Text
strAddressLine = tbxAddressLine.Text
intPhoneNumber = tbxPhoneNumber.Text
intCardNumber = tbxCardNumber.Text
strNameOnCard = tbxNameOnCard.Text
strExpirationDate = tbxExpirationDate.Text
lblItem.Text = "You said your item was " & strItem
lblQuantity.Text = "You said your quantity was " & strQuantity
lblFullName.Text = "You said your full Name was " & strFullName
lblAddressLine.Text = "You said your Address was " & strAddressLine
lblPhoneNumber.Text = "You said your item was " & intPhoneNumber
lblCardNumber.Text = "You said your item was " & intCardNumber
lblNameOnCard.Text = "You said the name on your card was " & strNameOnCard
lblExpirationDate.Text = "You said the expiration date was " & strExpirationDate
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>PC land | Cart</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<link href="#" rel="stylesheet" type="text/css" />
</head>
<body>
<form id="webform" runat="server">
<div>
<p><asp:Label ID="lblItem" runat="server"></asp:Label></p>
<p><asp:Label ID="lblQuantity" runat="server"></asp:Label></p>
<p><asp:Label ID="lblFullName" runat="server"></asp:Label></p>
<p><asp:Label ID="lblAddressLine" runat="server"></asp:Label></p>
<p><asp:Label ID="lblPhoneNumber" runat="server"></asp:Label></p>
<p><asp:Label ID="lblCardNumber" runat="server"></asp:Label></p>
<p><asp:Label ID="lblNameOnCard" runat="server"></asp:Label></p>
<p><asp:Label ID="lblExpirationDate" runat="server"></asp:Label></p>
</div>
</form>
<div id="footer">Copyright © 2012 PC Land - All Rights Reserved</div>
</body>
</html>
私が手にエラーがある：
Server Error in '/' Application.
Input string was not in a correct format.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.FormatException: Input string was not in a correct format.
Source Error:
Line 37: strFullName = tbxFullName.Text
Line 38: strAddressLine = tbxAddressLine.Text
Line 39: intPhoneNumber = tbxPhoneNumber.Text
Line 40: intCardNumber = tbxCardNumber.Text
Line 41: strNameOnCard = tbxNameOnCard.Text
Source File: D:\SOC Students Web Site\students\insc\insc209\project\confirm.aspx Line: 39
Stack Trace:
[FormatException: Input string was not in a correct format.]
Microsoft.VisualBasic.CompilerServices.Conversions.ParseDouble(String Value, NumberFormatInfo NumberFormat) +201
Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value) +66
[InvalidCastException: Conversion from string "" to type 'Integer' is not valid.]
Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value) +246
ASP.students_insc_insc209_project_confirm_aspx.Page_Load(Object sender, EventArgs e) in D:\SOC Students Web Site\students\insc\insc209\project\confirm.aspx:39
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
System.Web.UI.Control.OnLoad(EventArgs e) +99
System.Web.UI.Control.LoadRecursive() +50
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627
はそれです情報をデータベースに入れても、明らかにエラーを取り除きたいのです。このエラーメッセージが表示されたら
テストは番号など123523. Iのだけのシンプルなラインだったとき、私は電話番号フィールドに入力された情報：私は、彼らが実際に検証しているものの種類、例えばに適切なエラーメッセージで両方のバリデータを作る推薦します利用可能な検証があることを知っていますが、私はこの問題をまず解決してから、何かを追加したいと思っています。 –
私の例で示したように、 'CInt（tbxPhoneNumber.Text）'コードを追加してみてください。 – mellamokb