尝试加载应用程序时出现以下错误。 - OwinStartupAttribute.FriendlyName 值

Question

我想用 AspNetRoles 创建下拉列表。我使用此代码：

身份会议：

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);
        }
    }
}

。网络配置：

<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>

但是当我运行项目向我显示此错误时：

The following errors occurred while attempting to load the app. - The OwinStartupAttribute.FriendlyName value '' does not match the given value 'Identity_Work.IdentityConfig' in Assembly 'Identity_Work, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. - The given type or method 'Identity_Work.IdentityConfig' was not found. Try specifying the Assembly. To disable OWIN startup discovery, add the appSetting owin:AutomaticAppStartup with a value of "false" in your web.config. To specify the OWIN startup Assembly, Class, or Method, add the appSetting owin:AppStartup with the fully qualified startup class or configuration method name in your web.config.

。有什么问题？

编辑

Answer 1

就像错误信息解释的那样

The OwinStartupAttribute.FriendlyName value '' does not match the given value 'Identity_Work.IdentityConfig'

按照错误信息的指示进行操作

The given type or method 'Identity_Work.IdentityConfig' was not found. Try specifying the Assembly. To disable OWIN startup discovery, add the appSetting owin:AutomaticAppStartup with a value of "false" in your web.config. To specify the OWIN startup Assembly, Class, or Method, add the appSetting owin:AppStartup with the fully qualified startup class or configuration method name in your web.config.

首先你应该检查 Startup.cs 看看它是否正确引用了 class

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

如果存在，那么您需要删除 web.config 中的 owin:AppStartup（如果它存在并且未引用正确的 class

）

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

否则你可以更新web.config让owin使用

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

Answer 2

我只是指定了完整的路线，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出现以下错误。 - OwinStartupAttribute.FriendlyName 值

The following errors occurred while attempting to load the app. - The OwinStartupAttribute.FriendlyName value

c#

asp.net-mvc

owin

asp.net-identity-2