Robware

Hi, I'm Rob. I'm a software developer. I primarily work with C# in my professional life, but my home projects are often PHP and Python based.

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Latest Blog Post

Using a JSON string as a configuration source for a .NET Core project

I recently had a project at work that I wanted to pass in a JSON string as a means of configuration. There is a .NET package that will read in a JSON file, but not one to read in a string. So below you will find a set of classes I made to take in a JSON string and parse it in to the application config using the Newtonsoft JSON library.

public static class ConfigurationExtensions
{
    public static IConfigurationBuilder AddJsonString(this IConfigurationBuilder configurationBuilder, string json)
    {
        configurationBuilder.Add(new JsonStringConfigurationSource(json));
        return configurationBuilder;
    }
}
 
public class JsonStringConfigurationSource : IConfigurationSource
{
    private readonly string _json;
 
    public JsonStringConfigurationSource(string json) => _json = json;
 
    public IConfigurationProvider Build(IConfigurationBuilder builder) => new JsonStringConfigurationProvider(_json);
}
 
public class JsonStringConfigurationProvider : ConfigurationProvider

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