AspNet IdentityResult 可能出现哪些错误

AspNet IdentityResult 是 ASP.NET Core 中的一个类，用于表示身份验证和授权操作的结果。在使用 IdentityResult 进行身份验证和授权时，可能会遇到多种错误情况。本文将介绍一些常见的错误，并提供相应的案例代码。

csharp
var user = new ApplicationUser { UserName = "johnDoe", Email = "john@example.com" };
var result = await _userManager.CreateAsync(user, "password123");
if (!result.Succeeded)
{
    foreach (var error in result.Errors)
    {
        if (error.Code == "PasswordTooShort")
        {
            Console.WriteLine("密码长度太短！");
        }
        else if (error.Code == "PasswordRequiresNonAlphanumeric")
        {
            Console.WriteLine("密码必须包含特殊字符！");
        }
        // 其他密码错误的处理逻辑
    }
}

csharp
var user = new ApplicationUser { UserName = "johnDoe", Email = "john@example.com" };
var result = await _userManager.CreateAsync(user, "password123");
if (!result.Succeeded)
{
    foreach (var error in result.Errors)
    {
        if (error.Code == "DuplicateUserName")
        {
            Console.WriteLine("用户名已存在！");
        }
        // 其他用户名错误的处理逻辑
    }
}

csharp
var result = await _signInManager.PasswordSignInAsync("johnDoe", "wrongPassword", false, false);
if (!result.Succeeded)
{
    Console.WriteLine("登录失败！");
}

csharp
var result = await _authorizationService.AuthorizeAsync(User, "AdminOnlyPolicy");
if (!result.Succeeded)
{
    Console.WriteLine("访问受限！");
}