File Not Found With Json File Store

[bevanw]

Issue When using .UseJsonFile(), an exception is thrown when a setting is being written to a JSON file and the file does not exist. If the file already exists, the setting will be written correctly.

Workaround

• We have reverted to Config.Json.Net/Config.Net 4.16.2, as this seems to work correctly.

Environment

• .NET Framework 4.8

Affected Versions:

• Config.Net 4.17.0
• Config.Json.Net 4.17.0

Issue Reproduction

1. Create a .NET Framework 4.8 Console Application.
2. Install Config.Json.Net 4.17.0 NuGet package.
3. Write a new configuration builder using .UseJsonFile() with a relative/absolute path reference (example code below).
4. Assign a value to the setting property.

Example:

using Config.Net;

namespace JsonConfigStoreTest
{
    public interface ISettings
    {
        string Setting { get; set; }
    }

    class Program
    {
        static void Main(string[] args)
        {
            ISettings settings = new ConfigurationBuilder<ISettings>()
               .UseJsonFile("file.json")
               .Build();

            settings.Setting = "Test";
        }
    }
}

[luojunyuan]

124