IOptionsWriter

Easy way to write appsettings.json or other configuration json file

How to use

Installation

Nuget Package Manager Console:

Install-Package IOptionsWriter

.Net CLI:

dotnet add package IOptionsWriter

Using

IServiceCollection.ConfigureWritable<TOptions>(string sectionName = null, string settingsFile = "appsettings.json", bool reloadAfterWrite = false)

TOptions - type of your settings

sectionName - your configuration section name(default: TOptions type name)

settingsFile - default appsettings.json

reloadAfterWrite - you can enable this option if you have problems detecting file changes or if add the settings file with false value of reloadOnChange parameter (builder.AddJsonFile(appsettings.json, optional: false, reloadOnChange: false);)

Simple sample

appsettings.json:

{
    "MySettings": {
        "MyOption": "MyValue"
    }
}

Startup.cs:

public void ConfigureServices(IServiceCollection services)
{
    services
        .AddOptions()
        .ConfigureWritable<MySettings>();
}

Controllers/MyController.cs:

[Controller]
public class MyController : Controller {
    private readonly IOptionsWritable<MySettings> _myOptionsAccessor;

    public MyController(IOptionsWritable<MySettings> myOptionsAccessor) {
        _myOptionsAccessor = myOptionsAccessor;
    }

    [HttpPut]
    public IActionResult SetMyOptionValue(string value) {
        _myOptionsAccessor.Update(options => options.MyOption = value);
    }
}