我运行C#代码时似乎不存在HiddenField1
。
错误如下:
当前上下文中不存在名称“HiddenField1”。
第54行的HiddenField1
抱歉,我不知道为什么C#代码会在网站上显示出来。
public partial class Login : System.Web.UI.Page
{
protected void LoginButton_Click1(object sender, EventArgs e)
{
string userName1 = Login1.UserName;
string userPassword1 = Login1.Password;
bool logSuccess = false;
foreach (GridViewRow gvRow in GridView1.Rows)
{
if (userName1 == gvRow.Cells[1].Text && userPassword1 == gvRow.Cells[2].Text)
{
Response.Write("Logged in");
logSuccess = true;
break;
}
}
if (logSuccess == true)
{ Response.Redirect("~/MemberPages/Members.aspx"); }
else
{ HiddenField1.Value = ""; }
}
}
<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Login.aspx.cs" Inherits="Login" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
<style type="text/css">
.auto-style4 {
width: 158px;
}
.auto-style5 {
height: 28px;
}
.auto-style6 {
width: 158px;
height: 28px;
}
</style>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<h2>Login</h2>
<p>
<asp:Login ID="Login1" runat="server" Height="135px" Width="252px" OnAuthenticate="Login1_Authenticate">
<LayoutTemplate>
<table cellpadding="1" cellspacing="0" style="border-collapse:collapse;">
<tr>
<td>
<table cellpadding="0" style="height:135px;width:252px;">
<tr>
<td align="center" colspan="2">Log In</td>
</tr>
<tr>
<td align="right" class="auto-style5">
<asp:Label ID="UserNameLabel" runat="server" AssociatedControlID="UserName">User Email:</asp:Label>
</td>
<td class="auto-style6">
<asp:TextBox ID="UserName" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="UserNameRequired" runat="server" ControlToValidate="UserName" ErrorMessage="User Name is required." ToolTip="User Name is required." ValidationGroup="Login1">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td align="right">
<asp:Label ID="PasswordLabel" runat="server" AssociatedControlID="Password">Password:</asp:Label>
</td>
<td class="auto-style4">
<asp:TextBox ID="Password" runat="server" TextMode="Password"></asp:TextBox>
<asp:RequiredFieldValidator ID="PasswordRequired" runat="server" ControlToValidate="Password" ErrorMessage="Password is required." ToolTip="Password is required." ValidationGroup="Login1">*</asp:RequiredFieldValidator>
</td>
</tr>
<tr>
<td colspan="2">
<asp:CheckBox ID="RememberMe" runat="server" Text="Remember me next time." />
</td>
</tr>
<tr>
<td align="center" colspan="2" style="color:Red" >
<asp:HiddenField ID="HiddenField1" Value="Invalid user email or password." runat="server" />
</td>
</tr>
<tr>
<td align="right" colspan="2">
<asp:Button ID="LoginButton" runat="server" CommandName="Login" Text="Log In" ValidationGroup="Login1" OnClick="LoginButton_Click1" />
</td>
</tr>
</table>
</td>
</tr>
</table>
</LayoutTemplate>
</asp:Login>
</p>
<asp:ValidationSummary ID="ValidationSummary1" runat="server"
Group="Login1" />
<p>
</p>
</asp:Content>
答案 0 :(得分:5)
由于HiddenField
控件位于LayoutTemplate
内,您需要使用FindControl
方法来查找它:
((HiddenField)Login1.FindControl("HiddenField1")).Value = "";