如何用异步方法实现IStringLocalizer索引器

IStringLocalizer 接口。

修饰符“async”对此项无效

public async LocalizedString this[string name] => new LocalizedString(name, await I(name));

如何实施 IString定位器 使用EF核心异步数据访问的接口?

using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Localization;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

/// <summary>
/// Translation service.
/// Retrieves localized strings from database
/// </summary>
public sealed class Localizer : IStringLocalizer
{
    readonly EevaContext ctx;

    public Localizer(EevaContext ctx)
    {
        this.ctx = ctx;
    }

    async Task<string> I(string str)
        {   
            return await ctx.Strings
                            .Where((s) => s.Est == estString.)
                            .SingleOrDefaultAsync(); 
        }

    #region interface implementation
    public async LocalizedString this[string name] => new LocalizedString(name, await I(name));
    public LocalizedString this[string name, params object[] arguments] => throw new NotImplementedException();
}

回答 async Indexer in C#