c#-更改MVC主页登录页面：未注册类型为“ Microsoft.Extensions.DependencyInjection.IServiceCollection”的服务

我尝试使用此命令更改网页mvc应用程序的登录页面.

我在下面收到此错误.我该如何解决？

    public void Configure(IServiceCollection services,IApplicationBuilder app,IHostingEnvironment env)
    {


        app.AddMvc().AddRazorPagesOptions(options =>
        {
            options.Conventions.AddPageRoute("/Products/Index","");
        });

错误：

InvalidOperationException: No service for type 'Microsoft.Extensions.DependencyInjection.IServiceCollection' has been registered.

最佳答案

添加一个ConfigureServices方法以配置服务和DI：

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc().AddRazorPagesOptions(options =>
    {
        options.Conventions.AddPageRoute("/Products/Index","");
    });
}

应该使用Configure方法来配置HTTP管道(即app.UseMvc();)

欲了解更多信息,请参见App startup in ASP.NET Core