达网络核心2.0的AppSettings使用ConfigurationManager中.NET完整的

假设下面的项目结构：

1. A计划：

   • .NET完整的框架（4.6.2）
   • 内部经由访问配置：

   ConfigurationManager.AppSettings [ “键”];

2. 项目B：

   • 达网络核心2.0（编译到.NET 4.6.2）
   • 引用并使用一个项目

问题：
达网络核心使用新的配置机制 - 是有办法的方式，将使项目甲经由ConfigurationManager中消耗配置挂钩（项目B）的.NET芯配置 - 即没有在项目A码的变化？

添加NuGet包System.Configuration.ConfigurationManager像这个答案只增加ConfigurationManager中，以项目B，但在项目中没有配置通过ConfigurationManager中可用

Answer 1:

诀窍是使用ConfigurationManager.AppSettings.Set方法预填充ConfigurationManager.AppSettings从.NET这样的核心类库以后可以使用它。

我使用下列类来JSON设置加入到ConfigurationManager 。

public class CustomJsonConfigurationProvider : JsonConfigurationProvider
{
    public CustomJsonConfigurationProvider(JsonConfigurationSource source) : base(source) { }

    public override void Load()
    {
        base.Load();
        foreach (string key in Data.Keys)
        {
            string[] keyParts = key.Split(new[] { ":" }, StringSplitOptions.RemoveEmptyEntries);
            ConfigurationManager.AppSettings.Set(keyParts[keyParts.Length - 1], Data[key]);
        }
    }
}

public class CustomJsonConfigurationSource : JsonConfigurationSource
{
    public override IConfigurationProvider Build(IConfigurationBuilder builder)
    {
        FileProvider = FileProvider ?? builder.GetFileProvider();
        return new CustomJsonConfigurationProvider(this);
    }
}

public static class CustomConfiguratorExtensions
{
    public static IConfigurationBuilder AddCustomJsonFile(this IConfigurationBuilder builder, string path)
    {
        return AddCustomJsonFile(builder, provider: null, path: path, optional: false, reloadOnChange: false);
    }

    public static IConfigurationBuilder AddCustomJsonFile(this IConfigurationBuilder builder, string path, bool optional)
    {
        return AddCustomJsonFile(builder, provider: null, path: path, optional: optional, reloadOnChange: false);
    }

    public static IConfigurationBuilder AddCustomJsonFile(this IConfigurationBuilder builder, string path, bool optional, bool reloadOnChange)
    {
        return AddCustomJsonFile(builder, provider: null, path: path, optional: optional, reloadOnChange: reloadOnChange);
    }

    public static IConfigurationBuilder AddCustomJsonFile(this IConfigurationBuilder builder, IFileProvider provider, string path, bool optional, bool reloadOnChange)
    {
        if (provider == null && Path.IsPathRooted(path))
        {
            provider = new PhysicalFileProvider(Path.GetDirectoryName(path));
            path = Path.GetFileName(path);
        }

        var source = new CustomJsonConfigurationSource
        {
            FileProvider = provider,
            Path = path,
            Optional = optional,
            ReloadOnChange = reloadOnChange
        };

        builder.Add(source);

        return builder;
    }
}

用法：

builder.ConfigureAppConfiguration((w, c) =>
{
    c.AddCustomJsonFile("appsettings.json");
});

文章来源: .Net Core 2.0 appsettings with .net full framework using ConfigurationManager