Question

我想在_Layout视图的导航栏上显示当前的ApplicationUsers Firstname + Lastname。我发现您可以从当前的RenderedBody控制器传递您的视图包，如下所示：

  private readonly IHttpContextAccessor _httpContext;
    private readonly UserManager<ApplicationUser> _userManager;
    private readonly ApplicationUser _user;

    public HomeController(IHttpContextAccessor httpContextAccessor, UserManager<ApplicationUser> userManager) {
       _httpContext = httpContextAccessor;
       _userManager = userManager;
        _user = _userManager.Users.Single(u => u.Id == _httpContext.HttpContext.User.FindFirst(ClaimTypes.NameIdentifier).Value);
    }

在控制器中：

public IActionResult Index()
    {

        ViewBag.Username = $"{_user.FirstName} {_user.Surname}";
        return View();
    }

最后在我的_Layout视图中：

<strong class="font-bold">@ViewBag.Username</strong>

这种方法似乎与谷物相悖，对每一种观点来说都是一种巨大的痛苦。实现这一目标的标准是什么？

Answer 1

您可以将UserManager和SignInManager注入视图。

@inject SignInManager<ApplicationUser> SignInManager
@inject UserManager<ApplicationUser> UserManager

然后，您可以测试用户是否使用SignInManager.IsSignedIn(User)登录并使用UserManager.GetUserName(User)显示用户名

@if (SignInManager.IsSignedIn(User))
{
  <form asp-area="" asp-controller="Account" asp-action="LogOff" method="post" id="logoutForm" class="navbar-right">
   <ul class="nav navbar-nav navbar-right">
    <li>
     <a asp-area="" asp-controller="Manage" asp-action="Index" title="Manage">Hello @UserManager.GetUserName(User)!</a>
    </li>
    <li>
      <button type="submit" class="btn btn-link navbar-btn navbar-link">Log off</button>
    </li>
   </ul>
 </form>
}

PS。此外，您还需要添加这两个using

@using Microsoft.AspNetCore.Identity
@using MyWebApp.Models

Answer 2

您可以从您的扩展用户（ApplicationUser）获取任何信息：

// Inject SignInManager and UserManager in your _Layout.cshtml
@inject SignInManager<ApplicationUser> signInManager;
@inject UserManager<ApplicationUser> userManager;


 @if (signInManager.IsSignedIn(User))
                {
                   // Get the current logged in user
                    Task<ApplicationUser> GetCurrentUserAsync() => userManager.GetUserAsync(User);

                    var user = await GetCurrentUserAsync();

                    var firstName = user.FirstName;
                    var lastName = user.LastName;
                    var lastLogin = user.LastLogin;
                    var nationality = user.Nationality;
                    var phoneNumber = user.PhoneNumber;

                    <h4>@firstName @lastName</h4>                                                                     
                    <h4>@lastLogin</h4>                                                
                    <h4>@nationality</h4>                                                
                    <h4>@phoneNumber</h4>
                }

Answer 3

对于ASP.Core Razor页面，将UserManager注入_Layout.cshtml

@using Microsoft.AspNetCore.Identity
@using webApp.Models
@inject UserManager<ApplicationUser> userManager
@{
    Layout = "/Pages/Shared/_Layout.cshtml";
    var user = await userManager.GetUserAsync(User);
    var displayName = user.DisplayName;
    var imagePath = user.GravatarImageUrl;
}

<h1>Manage your account</h1>

<div>
    <h4>Change your account settings</h4>
    <hr />
    <div class="row">
        <div class="col-md-3">
            <img src="@imagePath" alt="Avatar" />
            <h4>@displayName</h4>
            <partial name="_ManageNav" />
        </div>
        <div class="col-md-9">
            @RenderBody()
        </div>
    </div>
</div>

@section Scripts {
    @RenderSection("Scripts", required: false)
}

Answer 4

最新答案，在您的_Layout.cshtml中：

@using System.Security.Claims
@using  Microsoft.AspNetCore.Http

@inject IHttpContextAccessor httpContextAccessor
@{
    string name = 
       httpContextAccessor.HttpContext.User.FindFirst(ClaimTypes.NameIdentifier).Value;
}

在_Layout视图

4 个答案: