是多个调用AddRazorPages允许吗?

Question

在Program.cs中，我正在调用AddRazorPages来设置流畅验证和一些本地化的东西。不幸的是，这有很多重复的代码，我想知道如果它是完全合法的，通过调用AddRazorPages两次减少它?

我试着运行代码，它似乎工作，但谁能确认新版本是有效地与旧版本相同?

当前Program.cs

if (isDevelopment)
// Run-time compilation added during development
builder.Services.AddRazorPages(options => options.Conventions.Add(new CultureTemplatePageRouteModelConvention()))
.AddFluentValidation(fv =>
{
fv.RegisterValidatorsFromAssemblyContaining<PersonValidator>();
fv.LocalizationEnabled = true;
fv.DisableDataAnnotationsValidation = false;
})
.AddViewLocalization(LanguageViewLocationExpanderFormat.Suffix)
.AddDataAnnotationsLocalization()
.AddRazorRuntimeCompilation();
else
// No Run-time compilation needed when deployed
builder.Services.AddRazorPages(options => options.Conventions.Add(new CultureTemplatePageRouteModelConvention()))
.AddFluentValidation(fv =>
{
fv.RegisterValidatorsFromAssemblyContaining<PersonValidator>();
fv.LocalizationEnabled = true;
fv.DisableDataAnnotationsValidation = false;
})
.AddViewLocalization(LanguageViewLocationExpanderFormat.Suffix)
.AddDataAnnotationsLocalization();

新Program.cs

builder.Services.AddRazorPages(options => options.Conventions.Add(new CultureTemplatePageRouteModelConvention()))
.AddFluentValidation(fv =>
{
fv.RegisterValidatorsFromAssemblyContaining<PersonValidator>();
fv.LocalizationEnabled = true;
fv.DisableDataAnnotationsValidation = false;
})
.AddViewLocalization(LanguageViewLocationExpanderFormat.Suffix)
.AddDataAnnotationsLocalization();
// Run-time compilation added during development
if (isDevelopment)
builder.Services.AddRazorPages().AddRazorRuntimeCompilation();

Answer 1

您可以随意调用AddRazorPages。在内部，它使用一系列TryAdd*调用来添加该方法负责注册的各种服务。如果服务已经在服务容器中注册了，那么什么也不会发生。

https://github.com/dotnet/aspnetcore/blob/207f2c39ee1eccbc339450570fe6297026ea549c/src/Mvc/Mvc.RazorPages/src/DependencyInjection/MvcRazorPagesMvcCoreBuilderExtensions.cs L95