类型 'Startup' 已经用相同的参数类型定义了一个名为 'Configuration' 的成员

Question

我有这个 startup.cs

using Microsoft.Owin;
using Owin;

[assembly: OwinStartupAttribute(typeof(xx.yy.Startup))]
namespace xx.yy
{
    public partial class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            ConfigureAuth(app);
        }
    }
}

我有这个 Startup.Auth.cs

using System;
using Microsoft.Owin;
using Microsoft.Owin.Security.Cookies;
using Owin;

namespace xx.yy
{
    public static class xxAuthentication
    {
        public const String ApplicationCookie = "xxAuthenticationType";
    }

    public partial class Startup
    {
        public void ConfigureAuth(IAppBuilder app)
        {
            app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationType = xxAuthentication.ApplicationCookie,
                LoginPath = new PathString("/Login"),
                Provider = new CookieAuthenticationProvider(),
                CookieName = "ComisionesCookie",
                CookieHttpOnly = true,
                ExpireTimeSpan = TimeSpan.FromHours(12), // adjust to your needs
            });
        }
    }
}

然而它没有编译并出现此错误：

我使用此页面中的代码 http://tech.trailmax.info/2016/03/using-owin-and-active-directory-to-authenticate-users-in-asp-net-mvc-5-application/

Answer 1

很容易，但很难找到，问题是另一个开发人员在项目结构的不同文件夹中创建了一个具有相同签名的 startup.cs 文件。将在此处留下证据，因为它可能对其他开发人员有用

Answer 2

您可能需要 Startup class 中的构造函数成员，如下所示：

public class Startup {

    public Startup(IConfiguration _configuration){
        this._configuration = _configuration;
    }

    private IConfiguration _configuration{ 
        get; 
    }

    public Startup(IConfiguration configuration){
        // Expose the injected instance locally so we populate our settings instance
        _configuration = configuration;
    }

类型 'Startup' 已经用相同的参数类型定义了一个名为 'Configuration' 的成员

Type 'Startup' already defines a member called 'Configuration' with the same parameter types

c#

asp.net

asp.net-mvc

owin