Read values from appsettings.json before configuration.build

Question

Is that possible to read values from appsettings.json before configuration.build ?

i need to get endpoint, clientId, secret and tenant to bind configuration with azure app configuration

Configuration = builder.AddAzureAppConfiguration(options =>
           {
              //here i need to get some values from appsettings.json

           }).Build()

Answer 1

It's not possible.

Here are two examples of a scenario similar to yours in the Azure App Configuration GitHub examples:

Console Application

https://github.com/Azure/AppConfiguration-DotnetProvider/blob/e227b0b454370751c2ddbebb143fd6e02a07c47b/examples/ConsoleApplication/Program.cs#L36

The example shows that the ConfigurationBuilder is built to obtain an intermediate IConfiguration that is then used to provide a connection string for adding Azure App Configuration to the builder.

ASP.NET Core Web Application

https://github.com/Azure/AppConfiguration-DotnetProvider/blob/e227b0b454370751c2ddbebb143fd6e02a07c47b/examples/ConfigStoreDemo/Program.cs#L26

In the ASP.NET Core web application example the same pattern is used with the framework provided IConfigurationBuilder