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c# - 无法在代码隐藏中访问 asp.net changepassword 控件

转载 作者:行者123 更新时间:2023-12-02 22:36:08 24 4
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我无法访问代码隐藏中的任何 asp 控件。 .aspx页面如下

<%@ Page Title="" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="ChangePassword.aspx.cs" Inherits="ChangePassword" ValidateRequest="false"  %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:ChangePassword ID="ChangePassword1" runat="server" CssClass="MinutesList"
onchangedpassword="ChangePassword1_ChangedPassword">
<ChangePasswordTemplate>
<table cellpadding="1" cellspacing="0" style="border-collapse:collapse;">
<tr>
<td>
<table cellpadding="0">
<tr>
<td align="center" colspan="2">
Change Your Password</td>
</tr>
<tr>
<td align="right">
<asp:Label ID="CurrentPasswordLabel" runat="server"
AssociatedControlID="CurrentPassword">Password:</asp:Label>
</td>
<td>
<asp:TextBox ID="CurrentPassword" runat="server" TextMode="Password" Visible="false" >></asp:TextBox>
<asp:RequiredFieldValidator ID="CurrentPasswordRequired" runat="server"
ControlToValidate="CurrentPassword" ErrorMessage="Password is required."
ToolTip="Password is required." ValidationGroup="ChangePassword1">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td align="right">
<asp:Label ID="NewPasswordLabel" runat="server"
AssociatedControlID="NewPassword">New Password:</asp:Label>
</td>
<td>
<asp:TextBox ID="NewPassword" runat="server" TextMode="Password"></asp:TextBox>
<asp:RequiredFieldValidator ID="NewPasswordRequired" runat="server"
ControlToValidate="NewPassword" ErrorMessage="New Password is required."
ToolTip="New Password is required." ValidationGroup="ChangePassword1">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td align="right">
<asp:Label ID="ConfirmNewPasswordLabel" runat="server"
AssociatedControlID="ConfirmNewPassword">Confirm New Password:</asp:Label>
</td>
<td>
<asp:TextBox ID="ConfirmNewPassword" runat="server" TextMode="Password"></asp:TextBox>
<asp:RequiredFieldValidator ID="ConfirmNewPasswordRequired" runat="server"
ControlToValidate="ConfirmNewPassword"
ErrorMessage="Confirm New Password is required."
ToolTip="Confirm New Password is required." ValidationGroup="ChangePassword1">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td align="center" colspan="2">
<asp:CompareValidator ID="NewPasswordCompare" runat="server"
ControlToCompare="NewPassword" ControlToValidate="ConfirmNewPassword"
Display="Dynamic"
ErrorMessage="The Confirm New Password must match the New Password entry."
ValidationGroup="ChangePassword1"></asp:CompareValidator>
</td>
</tr>
<tr>
<td align="center" colspan="2" style="color:Red;">
<asp:Literal ID="FailureText" runat="server" EnableViewState="False"></asp:Literal>
</td>
</tr>
<tr>
<td align="right">
<asp:Button ID="ChangePasswordPushButton" runat="server"
CommandName="ChangePassword" Text="Change Password"
ValidationGroup="ChangePassword1" />
</td>
<td>
<asp:Button ID="CancelPushButton" runat="server" CausesValidation="False"
CommandName="Cancel" Text="Cancel" />
</td>
</tr>
</table>
</td>
</tr>
</table>
</ChangePasswordTemplate>
<SuccessTemplate>
<table cellpadding="1" cellspacing="0" style="border-collapse:collapse;">
<tr>
<td>
<table cellpadding="0">
<tr>
<td align="center" colspan="2">
Change Password Complete</td>
</tr>
<tr>
<td>
Your password has been changed!</td>
</tr>
<tr>
<td>
<asp:Button ID="HomePageButton" runat="server" Text="Continue" CausesValidation="true"
onclick="HomePageButton_Click" />
</td>
</tr>
</table>
</td>
</tr>
</table>
</SuccessTemplate>
</asp:ChangePassword>
</asp:Content>

代码隐藏是

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class ChangePassword : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//TextBox password = (TextBox)ChangePassword1.FindControl("CurrentPassword");
//Label passwordLabel = (Label)ChangePassword1.FindControl("CurrentPasswordLabel");
TextBox password = ChangePassword1.FindControl("CurrentPassword") as TextBox;
Label passwordLabel = ChangePassword1.FindControl("CurrentPasswordLabel") as Label;
//TextBox CurrentPassword = ChangePassword1.FindControl("CurrentPassword") as TextBox;
if (Request.QueryString["p"] != null)
{
passwordLabel.Visible = false;
password.TextMode = TextBoxMode.SingleLine;
password.Visible = false;
password.Text = Request.QueryString["p"];
}
}
protected void ChangePassword1_ChangedPassword(object sender, EventArgs e)
{

}
protected void HomePageButton_Click(object sender, EventArgs e)
{
//Link.ToHomePage();
Response.Redirect("HomePage.aspx");
}

}

我遇到的问题是我得到的对象引用未设置为 passwordLabel 和密码上的对象实例。有谁知道如何将它们纳入范围,以便我可以在代码隐藏中编辑文本和可见性属性?

最佳答案

尝试使用:

  TextBox password = ChangePassword1.Controls[0].FindControl("CurrentPassword") as TextBox;
Label passwordLabel = ChangePassword1.Controls[0].FindControl("CurrentPasswordLabel") as Label;

关于c# - 无法在代码隐藏中访问 asp.net changepassword 控件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/11424716/

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