如何从appsettings.json中正确拉取NLog DB ConnectionString

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },
  "ConnectionStrings": {
    "NLogDBConnectionString": "Server=myServerAddress;Database=myDataBase;User Id=myUsername;Password=myPassword;"
  }
}

public class Startup
{
    public IConfiguration Configuration { get; }

    public Startup(IConfiguration configuration)
    {
        Configuration = configuration;
    }

    public void ConfigureServices(IServiceCollection services)
    {
        // 其他服务配置...

        // 配置NLog
        services.AddLogging(loggingBuilder =>
        {
            loggingBuilder.AddNLog(new NLogProviderOptions
            {
                CaptureMessageTemplates = true,
                CaptureMessageProperties = true
            });
        });
    }

    public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
    {
        // 配置NLog
        var nlogConfig = new NLogLoggingConfiguration(Configuration.GetSection("NLog"));
        loggerFactory.AddNLog(nlogConfig);

        // 其他中间件配置...
    }
}

<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      autoReload="true"
      throwConfigExceptions="true">

  <targets>
    <target name="database" xsi:type="Database" 
            dbProvider="System.Data.SqlClient" 
            connectionString="${configsetting:name=ConnectionStrings.NLogDBConnectionString}" 
            commandText="INSERT INTO Logs (Level, Message, Timestamp) VALUES (@Level, @Message, @Timestamp)">
      <parameter name="@Level" layout="${level}" />
      <parameter name="@Message" layout="${message}" />
      <parameter name="@Timestamp" layout="${date:format=yyyy-MM-dd HH\:mm\:ss}" />
    </target>
  </targets>

  <rules>
    <logger name="*" minlevel="Info" writeTo="database" />
  </rules>
</nlog>