我有以下问题，我想通过使用asp：复选框禁用或启用我的asp窗体中的控件但是当我单击复选框将选中状态更改为true或false时，它将始终发送＆＃34假＃34;
<%@ Page Language="VB" MasterPageFile="~/Site.master" AutoEventWireup="false" CodeFile="Registration.aspx.vb" Inherits="Default2" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
<style type="text/css">
.auto-style2 {
text-align: left;
}
.auto-style3 {
font-family: "Times New Roman", Times, serif;
}
.auto-style4 {
font-family: "Times New Roman", Times, serif;
font-size: medium;
}
.auto-style5 {
font-family: "Times New Roman", Times, serif;
font-weight: bold;
font-size: x-large;
}
.auto-style6 {
font-size: medium;
}
.auto-style7 {
font-family: "Times New Roman", Times, serif;
font-size: x-large;
text-transform: capitalize;
border-style: outset;
border-width: 3px;
}
.auto-style8 {
width: 351px;
}
.auto-style9 {
width: 344px;
}
</style>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<div id="registration" class="auto-style2">
<asp:Label ID="lblMessage" runat="server" Text=""></asp:Label>
<br />
<table>
<tr>
<td>Employees in the database:</td>
<td>
<asp:UpdatePanel ID="upddlEmployee" runat="server">
<ContentTemplate>
<asp:DropDownList
ID="drpEmployee"
runat="server"
Height="30px"
Width="175px"
BackColor="White"
CssClass="auto-style2"
ForeColor="#000099"
AutoPostBack="true">
</asp:DropDownList>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID ="drpEmployee" EventName="SelectedIndexChanged" />
</Triggers>
</asp:UpdatePanel>
</td>
</tr>
</table>
<br />
<br />
<table>
<tr>
<td class="auto-style8">
<asp:Label ID="Label1" runat="server" Text="Employee ID:*" Width="300px"
Font-Bold="True" CssClass="auto-style7" Height="31px" BorderStyle="None"></asp:Label>
</td>
<td class="auto-style9">
<asp:UpdatePanel ID="UpdatePanel5" runat="server">
<ContentTemplate>
<asp:TextBox ID="txtEmployee_id" runat="server" CssClass="auto-style5" Height="30px" Width="200px" AutoPostBack ="true" OnTextChanged ="txtEmployeeUser_id_TextChanged"></asp:TextBox>
</ContentTemplate>
</asp:UpdatePanel>
</td>
<td>
<asp:UpdatePanel ID="UpdatePanel7" runat="server">
<ContentTemplate>
<span class="auto-style6">
<asp:label
ID="lblEmployeeID"
runat="server"
Text =""
InitialValue="" Width="229px"></asp:label>
</span>
</ContentTemplate>
</asp:UpdatePanel>
</td>
</tr>
<tr>
<td class="auto-style8"><span class="auto-style6">
<asp:Label ID="Label4" runat="server" Text="First Name:*" Width="300px"
Font-Bold="True" CssClass="auto-style7" height="30px" BorderStyle="None"></asp:Label>
</span>
</td>
<td class="auto-style9">
<asp:TextBox ID="txtFirstName" runat="server" Width="200px" CssClass="auto-style5" height="30px"></asp:TextBox>
</td>
<td>
<span class="auto-style6">
<asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server"
ControlToValidate="txtFirstName" ErrorMessage="First Name Required" CssClass="auto-style3" Width="300px"></asp:RequiredFieldValidator>
</span>
</td>
</tr>
<tr>
<td class="auto-style8">
<span class="auto-style6">
<asp:Label ID="Label5" runat="server" Text=" Last Name:*" Width="300px"
Font-Bold="True" CssClass="auto-style7" height="30px" BorderStyle="None"></asp:Label>
</span>
</td>
<td class="auto-style9">
<asp:TextBox ID="txtLastName" runat="server" Width="200px" CssClass="auto-style5" height="30px"></asp:TextBox>
</td>
<td>
<span class="auto-style6">
<asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server"
ControlToValidate="txtLastName" ErrorMessage="Last Name Required" CssClass="auto-style3" Width="300px"></asp:RequiredFieldValidator>
</span>
</td>
</tr>
<tr>
<td class="auto-style8">
<span class="auto-style6">
<asp:Label ID="lblUsername" runat="server" Text=" User Name:*" Width="300px"
Font-Bold="True" CssClass="auto-style7" height="30px" BorderStyle="None"></asp:Label>
</span></td>
<td class="auto-style9">
<asp:UpdatePanel ID="UpdatePanel6" runat="server">
<ContentTemplate>
<asp:TextBox ID="txtUserName" runat="server" CssClass="auto-style5" height="30px" Width="200px" AutoPostBack ="True" OnTextChanged="txtEmployeeUser_id_TextChanged"></asp:TextBox>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="txtUserName" EventName="TextChanged" />
</Triggers>
</asp:UpdatePanel>
</td>
<td>
<span class="auto-style6">
<asp:label
ID="lblUsernameCheck"
runat="server"
Text =""
InitialValue="" Width="229px"></asp:label>
</span>
</td>
</tr>
<tr>
<td class="auto-style8">
<span class="auto-style6">
<asp:Label ID="Label6" runat="server" Text="Regular Time:" Width="300px"
Font-Bold="True" CssClass="auto-style7" height="30px" BorderStyle="None"></asp:Label>
</span>
</td>
<td class="auto-style9">
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:TextBox ID="txtRegularTime" runat="server" CssClass="auto-style5" height="30px" TextMode="Number" Width="200px" AutoPostBack ="True" OnTextChanged ="txtRegularTime_TextChanged"></asp:TextBox>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="txtRegularTime" EventName="TextChanged" />
</Triggers>
</asp:UpdatePanel>
</td>
<td> </td>
</tr>
<tr>
<td class="auto-style8">
<span class="auto-style6">
<asp:Label ID="Label7" runat="server" Text="Double Time:" Width="300px"
Font-Bold="True" CssClass="auto-style7" height="30px" BorderStyle="None"></asp:Label>
</span>
</td>
<td class="auto-style9">
<asp:UpdatePanel ID="UpdatePanel2" runat="server">
<ContentTemplate>
<asp:TextBox ID="txtDoubleTime" runat="server" CssClass="auto-style5" height="30px" TextMode="Number" Width="200px"></asp:TextBox>
</ContentTemplate>
</asp:UpdatePanel>
</td>
<td> </td>
</tr>
<tr>
<td class="auto-style8">
<span class="auto-style6">
<asp:Label ID="Label8" runat="server" Text="Part Time:" Width="300px"
Font-Bold="True" CssClass="auto-style7" height="30px" BorderStyle="None"></asp:Label>
</span>
</td>
<td class="auto-style9">
<asp:UpdatePanel ID="UpdatePanel3" runat="server">
<ContentTemplate>
<asp:TextBox ID="txtPartTime" runat="server" Width="200px" TextMode="Number" CssClass="auto-style5" height="30px" AutoPostBack ="True" OnTextChanged ="txtPartTime_TextChanged"></asp:TextBox>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="txtPartTime" EventName="TextChanged" />
</Triggers>
</asp:UpdatePanel>
</td>
<td> </td>
</tr>
<tr>
<td class="auto-style8">
<span class="auto-style6">
<asp:Label ID="Label9" runat="server" Text="Over time:" Width="300px"
Font-Bold="True" CssClass="auto-style7" height="30px" BorderStyle="None"></asp:Label>
</span>
</td>
<td class="auto-style9">
<asp:UpdatePanel ID="UpdatePanel4" runat="server">
<ContentTemplate>
<asp:TextBox ID="txtOverTime" runat="server" Width="200px" TextMode="Number" CssClass="auto-style5" height="30px"></asp:TextBox>
</ContentTemplate>
</asp:UpdatePanel>
</td>
<td> </td>
</tr>
<tr>
<td class="auto-style8">
<asp:Label ID="Label2" runat="server" Text=" Password:*" Width="231px" Font-Bold="True" CssClass="auto-style7" height="30px" BorderStyle="None"></asp:Label>
<asp:UpdatePanel ID="UpdatePanel8" runat="server">
<ContentTemplate>
<asp:CheckBox ID="CheckBox1" runat="server" AutoPostBack="true" OnCheckedChanged="chkChecked" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger EventName="CheckedChanged" ControlID ="CheckBox1" />
</Triggers>
</asp:UpdatePanel>
</td>
<td class="auto-style9">
<asp:UpdatePanel ID="UpdatePanel9" runat="server">
<ContentTemplate>
<asp:TextBox ID="txtPassword" runat="server" Width="200px" TextMode="Password" CssClass="auto-style5" height="30px"></asp:TextBox>
</ContentTemplate>
</asp:UpdatePanel>
</td>
<td>
<span class="auto-style6">
<asp:CustomValidator ID="txtpasswordValidator" runat="server"
ControlToValidate="txtPassword" ErrorMessage="Password Required" CssClass="auto-style3" Width="300px"
OnServerValidate="txtpassword_ServerValidate" >
</asp:CustomValidator>
</span></td>
</tr>
<tr>
<td class="auto-style8">
<span class="auto-style6">
<asp:Label ID="Label3" runat="server" Text=" Confirm Password:*" Width="300px"
Font-Bold="True" CssClass="auto-style7" height="30px" BorderStyle="None"></asp:Label>
</span>
</td>
<td class="auto-style9">
<asp:UpdatePanel ID="UpdatePanel10" runat="server">
<ContentTemplate>
<asp:TextBox ID="txtConfirmpassword" runat="server" Width="200px" TextMode="Password" CssClass="auto-style5" height="30px"></asp:TextBox>
</ContentTemplate>
</asp:UpdatePanel>
</td>
<td>
<span class="auto-style6">
<asp:CustomValidator
ID="CustomValidator1"
runat="server"
ControlToValidate="txtConfirmpassword"
ErrorMessage="Password mismatch"
OnServerValidate="txtConfirmpassword_ServerValidate"
CssClass="auto-style3"
Width="300px"></asp:CustomValidator>
</span></td>
</tr>
<tr>
<td class="auto-style8">
<asp:Label ID="Label10" runat="server" Text="Label" Visible="False"></asp:Label>
</td>
<td class="auto-style9"> </td>
<td> </td>
</tr>
<tr>
<td class="auto-style8"> </td>
<td class="auto-style9"> </td>
<td> </td>
</tr>
</table>
<br />
<span class="auto-style6">
<br class="auto-style3" />
</span><span class="auto-style4"> </span><span class="auto-style6">
<br class="auto-style3" />
<Table runat="server" >
<tr>
<td>
<asp:Button
ID="btnConfirmPassword"
runat="server"
Text="Confirm Registration"
onclick="Button1_Click"
Font-Bold="True"
Font-Size="X-Large"
Height="50px"
Width="250px" />
</td>
<td>
<asp:Button
ID="btnClear"
runat="server"
Text="ClearData"
onclick="btnClear_Click"
Font-Bold="True"
Font-Size="X-Large"
Height="50px"
Width="250px" />
</td>
</tr>
</Table>
</span>
</div>
</asp:Content>
以及asp发出的代码如下：
Imports System.Data
Imports System.Configuration
Imports MySql.Data.MySqlClient
Partial Class Default2
Inherits System.Web.UI.Page
Dim gclass As New GlobalClass
Dim employeeData As New Employee
Dim intEmployee() As Integer
Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles btnConfirmPassword.Click
If drpEmployee.SelectedIndex = -1 Then
ExeQuery("I")
Else
ExeQuery("U")
End If
clearFields()
End Sub
Sub ExeQuery(strMode As String)
If txtRegularTime.Text <> "" Then
Dim query As String = gclass.SPEmployeeCall(strMode, 1, txtUserName.Text, txtPassword.Text, txtConfirmpassword.Text, _
txtEmployee_id.Text, txtFirstName.Text, txtLastName.Text, _
Convert.ToDouble(txtOverTime.Text), Convert.ToDouble(txtDoubleTime.Text), _
Convert.ToDouble(txtPartTime.Text), Convert.ToDouble(txtRegularTime.Text))
gclass.ExecuteSP(query)
End If
End Sub
Protected Sub txtRegularTime_TextChanged(sender As Object, e As EventArgs) Handles txtRegularTime.TextChanged
If Convert.ToDecimal(txtRegularTime.Text) > 0 Then
txtDoubleTime.Text = Convert.ToDecimal(txtRegularTime.Text * 2)
txtOverTime.Text = Convert.ToDecimal(txtRegularTime.Text * 1.5)
txtPartTime.Text = 0
End If
txtPassword.Focus()
End Sub
Protected Sub txtPartTime_TextChanged(sender As Object, e As EventArgs) Handles txtPartTime.TextChanged
If Convert.ToDecimal(txtPartTime.Text) > 0 Then
txtDoubleTime.Text = 0
txtOverTime.Text = 0
txtRegularTime.Text = 0
End If
txtPassword.Focus()
End Sub
Sub clearFields()
drpEmployee.SelectedIndex = 0
checkboxDRPemployee()
txtEmployee_id.Text = Nothing
txtFirstName.Text = Nothing
txtLastName.Text = Nothing
txtUserName.Text = Nothing
txtDoubleTime.Text = Nothing
txtOverTime.Text = Nothing
txtRegularTime.Text = Nothing
txtPartTime.Text = Nothing
End Sub
Sub clearFields(dt As DataTable)
txtEmployee_id.Text = dt.Rows(0)(1)
txtFirstName.Text = dt.Rows(0)(2)
txtLastName.Text = dt.Rows(0)(3)
txtUserName.Text = dt.Rows(0)(8)
txtDoubleTime.Text = dt.Rows(0)(5)
txtOverTime.Text = dt.Rows(0)(4)
txtRegularTime.Text = dt.Rows(0)(7)
txtPartTime.Text = dt.Rows(0)(6)
txtPassword.Text = dt.Rows(0)(9)
txtConfirmpassword.Text = dt.Rows(0)(10)
End Sub
Protected Sub txtEmployeeUser_id_TextChanged(sender As Object, e As EventArgs) Handles txtEmployee_id.TextChanged, txtUserName.TextChanged
Dim intMode As Integer
If sender Is txtEmployee_id Then
intMode = 2
ElseIf sender Is txtUserName Then
intMode = 3
End If
Dim query As String = gclass.SPEmployeeCall("Q", intMode, txtUserName.Text, Nothing, Nothing, _
txtEmployee_id.Text, Nothing, Nothing, _
Nothing, Nothing, _
Nothing, Nothing)
lblEmployeeID.Visible = True
lblEmployeeID.Text = gclass.DatabaseMessages(query)
End Sub
Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
If Session.Contents("Employee") Is Nothing Then
Response.Redirect("Login.aspx")
Else
employeeData = Session("Employee")
End If
If Not IsPostBack And drpEmployee.SelectedIndex = -1 Then
Session.Contents("EmployeeDDL") = gclass.LoadEmployeeAbsent(drpEmployee, 99)
End If
checkboxDRPemployee()
End Sub
Protected Sub drpEmployee_SelectedIndexChanged(sender As Object, e As EventArgs) Handles drpEmployee.SelectedIndexChanged
intEmployee = Session.Contents("EmployeeDDL")
If drpEmployee.SelectedIndex <> 0 Then
Dim query As String = gclass.SPEmployeeCall("Q", 7, Nothing, Nothing, Nothing, intEmployee(drpEmployee.SelectedIndex), Nothing, Nothing, Nothing, Nothing, Nothing, Nothing)
Dim dt As DataTable = gclass.Mysql_CreateDataTable(query)
clearFields(dt)
Else
clearFields()
End If
End Sub
Sub checkboxDRPemployee()
If drpEmployee.SelectedIndex <> 0 Then
CheckBox1.Enabled = True
CheckBox1.Checked = False
Else
CheckBox1.Enabled = False
CheckBox1.Checked = False
End If
End Sub
Protected Sub btnClear_Click(sender As Object, e As EventArgs) Handles btnClear.Click
clearFields()
End Sub
Protected Sub txtpassword_ServerValidate(source As Object, args As ServerValidateEventArgs)
If Not CheckBox1.Checked Then
args.IsValid = (txtPassword.Text <> "")
End If
End Sub
Protected Sub txtConfirmpassword_ServerValidate(source As Object, args As ServerValidateEventArgs)
If Not CheckBox1.Checked Then
args.IsValid = (txtPassword.Text = txtConfirmpassword.Text)
End If
End Sub
Protected Sub chkChecked(sender As Object, e As EventArgs) Handles CheckBox1.CheckedChanged
Dim thisValue As Boolean = CheckBox1.Checked
txtPassword.Enabled = CheckBox1.Checked
txtConfirmpassword.Enabled = CheckBox1.Checked
End Sub
End Class
提前谢谢你 最亲切的问候 Douglas Leekam
答案 0 :(得分：0)
这肯定与AutoPostBack="true"
尝试通过更改为：
进行调试<asp:CheckBox ID="CheckBox1" runat="server" OnCheckedChanged="chkChecked" />
不确定代码的功能是什么，但您可能希望将页面加载代码包装在
中 If Not Page.IsPostBack Then
// code currently in page load
End If
答案 1 :(得分：0)
您可以使用javascript检查复选框是否已根据您可以从javascript本身禁用控件的值进行选中。您可以使用javascript onchange事件来检查复选框值。