https://localhost:7055/Identity/Account/Login时，提示A database operati
on failed while processing the request
.
SqlExcepti
on: 列名 'CmbId' 无效。 列名 'IsActive' 无效。应该修改登陆面，这是我的登陆页面，请给修改@page
@model LogoutModel
@{
ViewData["Title"] = "Log out";
}
<header>
<h1>@ViewData["Title"]</h1>
@{
if (User
.Identity?
.IsAuthenticated ?? false)
{
<form class="form-inline"
asp-area="Identity"
asp-page="/Account/Logout"
asp-route-returnUrl="@Url
.Page("/", new { area = "" })" method="post">
<
button type="
submit" class="nav-link btn btn-link text-dark">
Click here to Logout</
button>
</form>
}
else
{
<p>You have successfully logged out of the applicati
on.</p>
}
}
</header>
；；// Licensed to the
.NET Foundati
on under
one or more agreements
.
// The
.NET Foundati
on licenses this file to you under the MIT license
.
#nullable
disable
using System;
using System
.Threading
.Tasks;
using Microsoft
.AspNetCore
.Authorizati
on;
using Microsoft
.AspNetCore
.Identity;
using Microsoft
.AspNetCore
.Mvc;
using Microsoft
.AspNetCore
.Mvc
.RazorPages;
using Microsoft
.Extensi
ons
.Logging;
using UserManagementSystem
.Web
.Models;
namespace UserManagementSystem
.Web
.Areas
.Identity
.Pages
.Account
{
public class LogoutModel : PageModel
{
private read
only SignInManager<Applicati
onUser> _signInManager;
private read
only ILogger<LogoutModel> _logger;
public LogoutModel(SignInManager<Applicati
onUser> signInManager, ILogger<LogoutModel> logger)
{
_signInManager = signInManager;
_logger = logger;
}
public async Task<IActi
onResult>
OnPost(string returnUrl = null)
{
await _signInManager
.SignOutAsync();
_logger
.LogInformati
on("User logged out
.");
if (returnUrl != null)
{
return LocalRedirect(returnUrl);
}
else
{
// This needs to be a redirect so that the browser performs a new
// request and the identity for the user gets updated
.
return RedirectToPage();
}
}
}
}
// Licensed to the
.NET Foundati
on under
one or more agreements
.
// The
.NET Foundati
on licenses this file to you under the MIT license
.
#nullable
disable
using System;
using System
.Threading
.Tasks;
using Microsoft
.AspNetCore
.Authorizati
on;
using Microsoft
.AspNetCore
.Identity;
using Microsoft
.AspNetCore
.Mvc;
using Microsoft
.AspNetCore
.Mvc
.RazorPages;
using Microsoft
.Extensi
ons
.Logging;
using UserManagementSystem
.Web
.Models;
namespace UserManagementSystem
.Web
.Areas
.Identity
.Pages
.Account
{
public class LogoutModel : PageModel
{
private read
only SignInManager<Applicati
onUser> _signInManager;
private read
only ILogger<LogoutModel> _logger;
public LogoutModel(SignInManager<Applicati
onUser> signInManager, ILogger<LogoutModel> logger)
{
_signInManager = signInManager;
_logger = logger;
}
public async Task<IActi
onResult>
OnPost(string returnUrl = null)
{
await _signInManager
.SignOutAsync();
_logger
.LogInformati
on("User logged out
.");
if (returnUrl != null)
{
return LocalRedirect(returnUrl);
}
else
{
// This needs to be a redirect so that the browser performs a new
// request and the identity for the user gets updated
.
return RedirectToPage();
}
}
}
}；；// Licensed to the
.NET Foundati
on under
one or more agreements
.
// The
.NET Foundati
on licenses this file to you under the MIT license
.
#nullable
disable
using System;
using System
.Threading
.Tasks;
using Microsoft
.AspNetCore
.Authorizati
on;
using Microsoft
.AspNetCore
.Identity;
using Microsoft
.AspNetCore
.Mvc;
using Microsoft
.AspNetCore
.Mvc
.RazorPages;
using Microsoft
.Extensi
ons
.Logging;
using UserManagementSystem
.Web
.Models;
namespace UserManagementSystem
.Web
.Areas
.Identity
.Pages
.Account
{
public class LogoutModel : PageModel
{
private read
only SignInManager<Applicati
onUser> _signInManager;
private read
only ILogger<LogoutModel> _logger;
public LogoutModel(SignInManager<Applicati
onUser> signInManager, ILogger<LogoutModel> logger)
{
_signInManager = signInManager;
_logger = logger;
}
public async Task<IActi
onResult>
OnPost(string returnUrl = null)
{
await _signInManager
.SignOutAsync();
_logger
.LogInformati
on("User logged out
.");
if (returnUrl != null)
{
return LocalRedirect(returnUrl);
}
else
{
// This needs to be a redirect so that the browser performs a new
// request and the identity for the user gets updated
.
return RedirectToPage();
}
}
}
}
本文介绍了一种在ASP.NET中使用按钮控件时的小技巧，通过客户端JavaScript和服务器端事件相结合的方式，在按钮被点击后立即禁用它，避免用户重复提交表单。这种方法对于改善用户体验非常有效。
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