Razor 组件未呈现

Question

我有一个简单的 Razor 组件。 应用程序构建，但是当我运行它时，没有显示任何内容。

Razor 组件 (SystemNameLookup.razor) 是

@inherits SystemNameLookupComponent
<h3>Hi @SystemName</h3>

后面的代码是

namespace WebApp.Pages.Shared.Components
{
    public class SystemNameLookupComponent : ComponentBase
    {
        [Parameter]
        public string SystemName { get; set; } = "Something";
    }
}

它被称为

<SystemNameLookup></SystemNameLookup>

_Imports.cshtml 包含

@using Microsoft.AspNetCore.Components
@using WebApp.Pages.Shared.Components

并且 _ViewImports.cshtml 包含

@using WebApp
@using WebApp.Pages.Shared.Components
@namespace WebApp.Pages

但是什么都没有出现？ 我错过了什么。 （未报告错误 - 这是在 ASP.Net Core 5 上运行的）

Answer 1

I test with my blazor project,and it can work.Here is a demo(My project name is BlazorApp_ServerSide,and I don't have _ViewImports.cshtml in my blazor app,you can refer to the link , The _Imports.razor file is similar to the _ViewImports.cshtml file for Razor views and pages but applied specifically to Razor component files. ）：

结构体：

SystemNameLookup.razor：

@inherits SystemNameLookupComponent
<h3>Hi @SystemName</h3>

SystemNameLookupComponent.razor.cs：

namespace BlazorApp_ServerSide.Pages.Shared.Components
{
    public class SystemNameLookupComponent: ComponentBase
    {
        [Parameter]
        public string SystemName { get; set; } = "Something";
    }
}

_Imports.razor：

@using System.Net.Http
@using Microsoft.AspNetCore.Authorization
@using Microsoft.AspNetCore.Components.Authorization
@using Microsoft.AspNetCore.Components.Forms
@using Microsoft.AspNetCore.Components.Routing
@using Microsoft.AspNetCore.Components.Web
@using Microsoft.AspNetCore.Components.Web.Virtualization
@using Microsoft.JSInterop
@using BlazorApp_ServerSide
@using BlazorApp_ServerSide.Shared
@using Microsoft.AspNetCore.Components
@using BlazorApp_ServerSide.Pages.Shared.Components

测试.razor：

@page "/test"
<SystemNameLookup></SystemNameLookup>

结果：