无法从根提供程序解析作用域服务Microsoft.AspNetCore.Mvc.ViewFeatures.Internal.IViewBufferScope [英] Cannot resolve scoped service Microsoft.AspNetCore.Mvc.ViewFeatures.Internal.IViewBufferScope from root provider

问题描述

我正在尝试在我的ASP.NET Core 2.0 Web应用程序中使用此示例 RazorViewEngineEmailTemplates 从View创建HTML电子邮件正文.但是当我运行它并且我的控制器收到ajax请求时，我得到了这个错误:

I'm trying to use in my ASP.NET Core 2.0 web app this sample RazorViewEngineEmailTemplates to create an html email body from View. But when I run it and my controller gets an ajax request, I get this error:

无法从根提供程序解析作用域服务Microsoft.AspNetCore.Mvc.ViewFeatures.Internal.IViewBufferScope

Cannot resolve scoped service Microsoft.AspNetCore.Mvc.ViewFeatures.Internal.IViewBufferScope from root provider

它可能来自解析 RazorViewToStringRenderer类中的依赖项，但我不知道如何解决.

It's probably coming from resolving dependencies in the RazorViewToStringRenderer class but I have no idea how to fix this.

推荐答案

好的，问题是我使用了Singleton服务(EmailerService)中的渲染器.我将其注册更改为Scoped，并且现在都可以使用:

ok, the problem was I used renderer from a Singleton service (EmailerService). I changed its registration to Scoped and it all works now:

services.AddScoped<IEmailer, EmailerService>();

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