��权限没有,则隐藏 function forum_list_access_filter($forumlist, $gid, $allow = 'allowread') { global $grouplist; if (empty($forumlist)) return array(); if (1 == $gid) return $forumlist; $forumlist_filter = $forumlist; $group = $grouplist[$gid]; foreach ($forumlist_filter as $fid => $forum) { if (empty($forum['accesson']) && empty($group[$allow]) || !empty($forum['accesson']) && empty($forum['accesslist'][$gid][$allow])) { unset($forumlist_filter[$fid]); } unset($forumlist_filter[$fid]['accesslist']); } return $forumlist_filter; } function forum_filter_moduid($moduids) { $moduids = trim($moduids); if (empty($moduids)) return ''; $arr = explode(',', $moduids); $r = array(); foreach ($arr as $_uid) { $_uid = intval($_uid); $_user = user_read($_uid); if (empty($_user)) continue; if ($_user['gid'] > 4) continue; $r[] = $_uid; } return implode(',', $r); } function forum_safe_info($forum) { //unset($forum['moduids']); return $forum; } function forum_filter($forumlist) { foreach ($forumlist as &$val) { unset($val['brief'], $val['announcement'], $val['seo_title'], $val['seo_keywords'], $val['create_date_fmt'], $val['icon_url'], $val['modlist']); } return $forumlist; } function forum_format_url($forum) { global $conf; if (0 == $forum['category']) { // 列表URL $url = url('list-' . $forum['fid'], '', FALSE); } elseif (1 == $forum['category']) { // 频道 $url = url('category-' . $forum['fid'], '', FALSE); } elseif (2 == $forum['category']) { // 单页 $url = url('read-' . trim($forum['brief']), '', FALSE); } if ($conf['url_rewrite_on'] > 1 && $forum['well_alias']) { if (0 == $forum['category'] || 1 == $forum['category']) { $url = url($forum['well_alias'], '', FALSE); } elseif (2 == $forum['category']) { // 单页 $url = ($forum['threads'] && $forum['brief']) ? url($forum['well_alias'] . '-' . trim($forum['brief']), '', FALSE) : url($forum['well_alias'], '', FALSE); } } return $url; } function well_forum_alias() { $forumlist = forum_list_cache(); if (empty($forumlist)) return ''; $key = 'forum-alias'; static $cache = array(); if (isset($cache[$key])) return $cache[$key]; $cache[$key] = array(); foreach ($forumlist as $val) { if ($val['well_alias']) $cache[$key][$val['fid']] = $val['well_alias']; } return array_flip($cache[$key]); } function well_forum_alias_cache() { global $conf; $key = 'forum-alias-cache'; static $cache = array(); // 用静态变量只能在当前 request 生命周期缓存,跨进程需要再加一层缓存:redis/memcached/xcache/apc if (isset($cache[$key])) return $cache[$key]; if ('mysql' == $conf['cache']['type']) { $arr = well_forum_alias(); } else { $arr = cache_get($key); if (NULL === $arr) { $arr = well_forum_alias(); !empty($arr) AND cache_set($key, $arr); } } $cache[$key] = empty($arr) ? '' : $arr; return $cache[$key]; } ?>How to use C# WebAssemly from JavaScript without Blazor web components - Stack Overflow
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How to use C# WebAssemly from JavaScript without Blazor web components - Stack Overflow

programmeradmin4浏览0评论

To pile C# into WebAssemly and interop with JS it's required to use Blazor WebAssembly ASP.NET framework, which is designed for SPA and contains lot of overhead in case you just want to use a C# library from JS.

What is the minimum setup to just pile a DLL to WebAssembly and use it from JavaScript?

To pile C# into WebAssemly and interop with JS it's required to use Blazor WebAssembly ASP.NET framework, which is designed for SPA and contains lot of overhead in case you just want to use a C# library from JS.

What is the minimum setup to just pile a DLL to WebAssembly and use it from JavaScript?

Share Improve this question asked Oct 27, 2021 at 17:44 ElringusElringus 67910 silver badges15 bronze badges
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1 Answer 1

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Update: Starting with .NET 7 the use case has first-party support: https://devblogs.microsoft./dotnet/use-net-7-from-any-javascript-app-in-net-7/ Below is still relevant for older .NET versions or in case you'd like to dig deeper and/or implement custom interop layer.


Create a new empty C# project with the following configuration (via .csproj):

<Project Sdk="Microsoft.NET.Sdk.BlazorWebAssembly">

    <PropertyGroup>
        <TargetFramework>net6.0</TargetFramework>
        <LangVersion>10</LangVersion>
    </PropertyGroup>

    <ItemGroup>
        <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="6.0.0" />
        <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="6.0.0" PrivateAssets="all" />
    </ItemGroup>

</Project>

Initialize Blazor JS runtime and specify the bindings:

namespace WasmTest;

public class Program
{
    private static IJSRuntime js;

    private static async Task Main (string[] args)
    {
        var builder = WebAssemblyHostBuilder.CreateDefault(args);
        var host = builder.Build();
        js = host.Services.GetRequiredService<IJSRuntime>();
        await host.RunAsync();
    }

    [JSInvokable]
    public static async Task<string> BuildMessage (string name)
    {
        var time = await GetTimeViaJS();
        return $"Hello {name}! Current time is {time}.";
    }

    public static async Task<DateTime> GetTimeViaJS ()
    {
        return await js.InvokeAsync<DateTime>("getTime");
    }
}

Publish with dotnet publish and use the C# library from JS:

<script src="_framework/blazor.webassembly.js" autostart="false"></script>

<script>
    window.getTime = () => {
        return new Date().toJSON();
    };
    window.onload = async function () {
        await Blazor.start();
        const msg = await DotNet.invokeMethodAsync("WasmTest", "BuildMessage", "John");
        console.log(msg);
    };
</script>

Alternatively, here is a solution, that allows piling C# project into single-file UMD library, which can be consumed in any JavaScript environment: browsers, node, and custom restricted environments, such as VS Code's web extensions: https://github./Elringus/DotNetJS

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