Question

我想用AspNetRoles创建下拉列表。我使用这段代码：

Idnetity Conf：

public class ApplicationRoleManager : RoleManager<IdentityRole>
{
    public ApplicationRoleManager(IRoleStore<IdentityRole, string> roleStore)
        : base(roleStore)
    {
    }

    public static ApplicationRoleManager Create(IdentityFactoryOptions<ApplicationRoleManager> options, IOwinContext context)
    {
        return new ApplicationRoleManager(new RoleStore<IdentityRole>(context.Get<ApplicationDbContext>()));
    }
}

启动：

using System;
using Microsoft.AspNet.Identity;
using Microsoft.AspNet.Identity.Owin;
using Microsoft.Owin;
using Microsoft.Owin.Security.Cookies;
using Microsoft.Owin.Security.Google;
using Owin;
using Identity_Work.Models;

namespace Identity_Work
{
    public partial class Startup
    {
        public void ConfigureAuth(IAppBuilder app)
        {
            app.CreatePerOwinContext(ApplicationDbContext.Create);
            app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
            app.CreatePerOwinContext<ApplicationRoleManager>(ApplicationRoleManager.Create);
            app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);
            app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
                LoginPath = new PathString("/Account/Login"),
                Provider = new CookieAuthenticationProvider
                {  
                    OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<ApplicationUserManager, ApplicationUser>(
                        validateInterval: TimeSpan.FromMinutes(30),
                        regenerateIdentity: (manager, user) => user.GenerateUserIdentityAsync(manager))
                }
            });
            app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);            app.UseTwoFactorSignInCookie(DefaultAuthenticationTypes.TwoFactorCookie, TimeSpan.FromMinutes(5));    app.UseTwoFactorRememberBrowserCookie(DefaultAuthenticationTypes.TwoFactorRememberBrowserCookie);
        }
    }
}

。 Web配置：

<appSettings>
<add key="webpages:Version" value="3.0.0.0" />
<add key="webpages:Enabled" value="false" />
<add key="ClientValidationEnabled" value="true" />
<add key="UnobtrusiveJavaScriptEnabled" value="true" />
<add key="owin:AppStartup" value="Identity_Work.IdentityConfig" />

控制器：

[AllowAnonymous]
public ActionResult Register()
{
    ViewBag.name = new SelectList(db.Roles, "RoleID", "RoleName");

    return View();
}

查看：

<div class="form-group">
    <label>نوع عضویت</label>
    <div class="col-md-10">
        @Html.DropDownList("name", "--Select Name--")
    </div>
</div>

但是当我运行项目时显示这个错误：

尝试加载应用时发生以下错误。 - OwinStartupAttribute.FriendlyName值＆＃39;＆＃39;与给定值不匹配＆＃39; Identity_Work.IdentityConfig＆＃39;在Assembly＆＃39; Identity_Work，Version = 1.0.0.0，Culture = neutral，PublicKeyToken = null＆＃39;。 - 给定的类型或方法＆＃39; Identity_Work.IdentityConfig＆＃39;没找到。尝试指定程序集。要禁用OWIN启动发现，请添加appSetting owin：AutomaticAppStartup，其值为＆＃34; false＆＃34;在你的web.config中。要指定OWIN启动程序集，类或方法，请在web.config中添加appSetting owin：AppStartup以及完全限定的启动类或配置方法名称。

。有什么问题？

修改

Answer 1

与错误消息解释一样

OwinStartupAttribute.FriendlyName值''与给定值'Identity_Work.IdentityConfig'

按照错误消息

的说明进行操作

找不到给定的类型或方法“Identity_Work.IdentityConfig”。尝试指定程序集。要禁用OWIN启动发现，请添加 appSetting owin：AutomaticAppStartup，其值为“false” 你的web.config。指定OWIN启动程序集，类或方法，添加appSetting owin：AppStartup与完全限定 web.config中的启动类或配置方法名称。

首先您应该检查Startup.cs以查看它是否具有对该类的正确引用

[assembly: OwinStartup(typeof(Identity_Work.Startup))]

如果是，那么你需要删除web.config中的owin:AppStartup（如果它存在且没有引用正确的类

）

<add key="owin:AutomaticAppStartup" value="true" />

否则你可以更新web.config以让owin使用

<add key="owin:AutomaticAppStartup" value="false" />
<add key="owin:AppStartup" value="Identity_Work.Startup" />

Answer 2

我只是指定完整的路线，它对我有用！

Project name: Users.Web
Folders: App_Start
Class name: IdentityConfig

<add key="owin:AppStartup" value="Users.Web.App_Start.IdentityConfig" />

尝试加载应用程序时发生以下错误。 - OwinStartupAttribute.FriendlyName值

2 个答案: