如何禁用 net core 2.1+/net 5 中的预编译视图进行调试? [英] How to disable precompiled views in net core 2.1+ / net 5 for debugging?

问题描述

昨天我更新到net core 2.1.

Yesterday I updated to net core 2.1.

现在，如果我正在调试，视图会被预编译，这在启动过程中当然需要很长时间......是否可以退回到以前的行为，如果需要，视图会及时编译?

Now if I am debugging, the views getting precompiled, which ofcourse takes a long time during startup... Is it possible to fall back to the previous behavior, where the Views are compiled just in time, if it is needed?

我的 csproj 中没有与预编译相关的参考资料.它是来自元包的东西吗?

I have no reference related to precompilation in my csproj. Is it something that comes from the meta package?

  <ItemGroup>
    <PackageReference Include="JetBrains.Annotations" Version="11.1.0" />
    <PackageReference Include="Microsoft.AspNetCore.All" Version="2.1.0" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="2.1.0" PrivateAssets="All" />
    <PackageReference Include="Swashbuckle.AspNetCore" Version="2.5.0" />
    <!--<PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.ViewCompilation" Version="2.0.0" PrivateAssets="All" />-->
  </ItemGroup>

推荐答案

.net core >= 3 (也叫.net 5)

Microsoft 创建了一个 Nuget 包.这是此处记录.

只需参考 Microsoft.AspNetCore.Mvc.Razor.有条件地在 .csproj 文件中添加 RuntimeCompilation.不要忘记调整版本，你实际使用的.

Just reference Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation in your .csproj file conditionally. Don't forget to adjust the version, you actualy use.

<PackageReference
    Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation"
    Version="3.1.0"
    Condition="'$(Configuration)' == 'Debug'" />

同时配置您的服务

    public void ConfigureServices(IServiceCollection services)
    {
        // your MVC Builder (AddRazorPages/AddControllersWithViews)
        IMvcBuilder builder = services.AddRazorPages();

#if DEBUG
            // Only use Runtime Compilation on Debug
            if (Env.IsDevelopment())
            {
                builder.AddRazorRuntimeCompilation();
            }
#endif
    }

当然，当你想通用运行时编译时，即使发布，你也不需要所有的条件.

Ofcourse, when you want to general use Runtime Compilation, even when published, you don't need all the conditions.

这可以使用属性 RazorCompileOnBuild:

This can be accomplished using the property RazorCompileOnBuild in the .csproj file:

<PropertyGroup>
  <TargetFramework>netcoreapp2.1</TargetFramework>
  <RazorCompileOnBuild>false</RazorCompileOnBuild>
  <RazorCompileOnPublish>true</RazorCompileOnPublish>
</PropertyGroup>

这样 Razor 文件仅在发布期间进行预编译.

This way the Razor files are only precompiled during publishing.

根据用例，您还想根据构建配置进行配置:

Depending on the usecase you also want to configure this depending on the build configuration:

<PropertyGroup Condition="'$(Configuration)' == 'Debug'">
  <RazorCompileOnBuild>false</RazorCompileOnBuild>
  <RazorCompileOnPublish>true</RazorCompileOnPublish>
</PropertyGroup>

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