// Licensed to the
.NET Foundation under one or more agreements
.
// The
.NET Foundation licenses th
is file to you under the MIT license
.
#nullable d
isable
using
System;
using
System.Collections
.Generic;
using
System.ComponentModel
.DataAn
notations;
using
System.Linq;
using
System.Text;
using
System.Text
.Encodings
.Web;
using
System.Threading;
using
System.Threading
.Tasks;
using Microsoft
.Asp
NetCore
.Authentication;
using Microsoft
.Asp
NetCore
.Authorization;
using Microsoft
.Asp
NetCore
.Identity;
using Microsoft
.Asp
NetCore
.Identity
.UI
.Services;
using Microsoft
.Asp
NetCore
.Mvc;
using Microsoft
.Asp
NetCore
.Mvc
.RazorPages;
using Microsoft
.Asp
NetCore
.WebUtilities;
using Microsoft
.Extensions
.Logging;
using UserManagement
System.Web
.Models;
namespace UserManagement
System.Web
.Areas
.Identity
.Pages
.Account
{
public class Reg
isterModel : PageModel
{
private readonly SignInManager<ApplicationUser> _signInManager;
private readonly UserManager<ApplicationUser> _userManager;
private readonly IUserStore<ApplicationUser> _userStore;
private readonly IUserEmailStore<ApplicationUser> _emailStore;
private readonly ILogger<Reg
isterModel> _logger;
private readonly IEmailSender _emailSender;
public Reg
isterModel
(
UserManager<ApplicationUser> userManager,
IUserStore<ApplicationUser> userStore,
SignInManager<ApplicationUser> signInManager,
ILogger<Reg
isterModel> logger,
IEmailSender emailSender
)
{
_userManager = userManager;
_userStore = userStore;
_emailStore = GetEmailStore
();
_signInManager = signInManager;
_logger = logger;
_emailSender = emailSender;
}
/// <summary>
/// Th
is API supports the ASP
.NET Core
Identity default UI infrastructure and
is not intended to be used
/// directly from your code
. Th
is API may change or be removed in future releases
.
/// </summary>
[BindProperty]
public InputModel Input { get; set; }
/// <summary>
/// Th
is API supports the ASP
.NET Core
Identity default UI infrastructure and
is not intended to be used
/// directly from your code
. Th
is API may change or be removed in future releases
.
/// </summary>
public string ReturnUrl { get; set; }
/// <summary>
/// Th
is API supports the ASP
.NET Core
Identity default UI infrastructure and
is not intended to be used
/// directly from your code
. Th
is API may change or be removed in future releases
.
/// </summary>
public IL
ist<AuthenticationScheme> ExternalLogins { get; set; }
/// <summary>
/// Th
is API supports the ASP
.NET Core
Identity default UI infrastructure and
is not intended to be used
/// directly from your code
. Th
is API may change or be removed in future releases
.
/// </summary>
public class InputModel
{
/// <summary>
/// Th
is API supports the ASP
.NET Core
Identity default UI infrastructure and
is not intended to be used
/// directly from your code
. Th
is API may change or be removed in future releases
.
/// </summary>
[Required]
[EmailAddress]
[D
isplay
(Name = "Email"
)]
public string Email { get; set; }
/// <summary>
/// Th
is API supports the ASP
.NET Core
Identity default UI infrastructure and
is not intended to be used
/// directly from your code
. Th
is API may change or be removed in future releases
.
/// </summary>
[Required]
[StringLength
(100, ErrorMessage = "The {0} must be at least {2} and at max {1} characters long
.", MinimumLength = 6
)]
[Data
Type(Data
Type.Password
)]
[D
isplay
(Name = "Password"
)]
public string Password { get; set; }
/// <summary>
/// Th
is API supports the ASP
.NET Core
Identity default UI infrastructure and
is not intended to be used
/// directly from your code
. Th
is API may change or be removed in future releases
.
/// </summary>
[Data
Type(Data
Type.Password
)]
[D
isplay
(Name = "Confirm password"
)]
[Compare
("Password", ErrorMessage = "The password and confirmation password do
not match
."
)]
public string ConfirmPassword { get; set; }
}
public async Task OnGetAsync
(string returnUrl = null
)
{
ReturnUrl = returnUrl;
ExternalLogins =
(await _signInManager
.GetExternalAuthenticationSchemesAsync
()).ToL
ist
();
}
public async Task<IActionResult> OnPostAsync
(string returnUrl = null
)
{
returnUrl ??= Url
.Content
("~/"
);
ExternalLogins =
(await _signInManager
.GetExternalAuthenticationSchemesAsync
()).ToL
ist
();
if
(ModelState
.IsVal
id)
{
var user = CreateUser
();
await _userStore
.SetUserNameAsync
(user, Input
.Email, CancellationToken
.None
);
await _emailStore
.SetEmailAsync
(user, Input
.Email, CancellationToken
.None
);
var result = await _userManager
.CreateAsync
(user, Input
.Password
);
if
(result
.Succeeded
)
{
_logger
.LogInformation
("User created a new account with password
."
);
var user
Id = await _userManager
.GetUser
IdAsync
(user
);
var code = await _userManager
.GenerateEmailConfirmationTokenAsync
(user
);
code = WebEncoders
.Base64UrlEncode
(Encoding
.UTF8
.GetBytes
(code
));
var callbackUrl = Url
.Page
(
"/Account/ConfirmEmail",
pageHandler: null,
values: new { area = "
Identity", user
Id = user
Id, code = code, returnUrl = returnUrl },
protocol: Request
.Scheme
);
await _emailSender
.SendEmailAsync
(Input
.Email, "Confirm your email",
$"Please confirm your account by <a href='{HtmlEncoder
.Default
.Encode
(callbackUrl
)}'>clicking here</a>
."
);
if
(_userManager
.Options
.SignIn
.RequireConfirmedAccount
)
{
return RedirectToPage
("Reg
isterConfirmation", new { email = Input
.Email, returnUrl = returnUrl }
);
}
else
{
await _signInManager
.SignInAsync
(user,
isPers
istent: false
);
return LocalRedirect
(returnUrl
);
}
}
foreach
(var error in result
.Errors
)
{
ModelState
.AddModelError
(string
.Empty, error
.Description
);
}
}
// If we got th
is far, something failed, red
isplay form
return Page
();
}
private ApplicationUser CreateUser
()
{
try
{
return Activator
.CreateInstance<ApplicationUser>
();
}
catch
{
throw new Inval
idOperation
Exception($"Can't create an instance of '{nameof
(ApplicationUser
)}'
. " +
$"Ensure that '{nameof
(ApplicationUser
)}'
is not an abstract class and has a
parameterless constructor, or alternatively " +
$"overr
ide the reg
ister page in /Areas/
Identity/Pages/Account/Reg
ister
.cshtml"
);
}
}
private IUserEmailStore<ApplicationUser> GetEmailStore
()
{
if
(!_userManager
.SupportsUserEmail
)
{
throw new
NotSupportedException("The default UI requires a user store with email support
."
);
}
return
(IUserEmailStore<ApplicationUser>
)_userStore;
}
}
}
这是我原来的页面，请给我修改
在学习C# Linq时遇到了一个错误：System.NotSupportedException，具体表现为尝试将类型为'collection Nullable=True, DefaultValue=, MaxLength=50, Unicode FixedLength=False'的对象转换为字符串时失败。问题源于在查询中嵌套查询同一表，导致类型不匹配。解决办法是正确处理关联查询，确保类型转换的正确性。博客作者通过深入研究和理解Linq的查询语法，最终解决了这个问题。
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