从IHostingEnvironment迁移到IWebHostEnvironment

Question

我有这个：

let configureApp (app : IApplicationBuilder) =
    let env = app.ApplicationServices.GetService<IHostingEnvironment>()
    (match env.IsDevelopment() with
    | true  -> app.UseDeveloperExceptionPage()
    | false -> app.UseGiraffeErrorHandler errorHandler)

当我尝试迁移时，出现错误：

let configureApp (app : IApplicationBuilder) =
    let env = app.ApplicationServices.GetService<IWebHostEnvironment>()
    (match env. with

我不知道该代码段应更改什么。

Answer 1

基于the documentation，您需要确保已打开命名空间Microsoft.AspNetCore.Hosting。