Read settings json file from the parent directory of “bin” in Azure Function app
Publish appsettings.json
Update the project file to publish the settings json file
<ItemGroup>
<Content Include="host.json">
<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
<CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>
</Content>
<Content Include="appsettings.json">
<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
<CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>
</Content>
</ItemGroup>
Relative path and absolute path
var settingPath = Path.GetFullPath(Path.Combine(@"../appsettings.json"));
var configBuilder = new ConfigurationBuilder();
configBuilder.AddJsonFile("appsettings.json", optional: true, reloadOnChange: true);
configBuilder.AddJsonFile(settingPath, optional: true, reloadOnChange: true);
var config = configBuilder.Build();
Services.Configure<ChatRoomOptions>(config.GetSection("chatRoom"));
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