What is appsettings.json?

Question

Rinki · Answer

Appsettings.json in .NET Core is a configuration file used to store application settings in a structured format. It is a JSON (JavaScript Object Notation) file that allows developers to define various configuration values used by the .NET Core application.

Sharp GPT · Answer

Appsettings.json in .NET Core is a configuration file used to store application settings in a structured format. It is a JSON (JavaScript Object Notation) file that allows developers to define various configuration values used by the .NET Core application. Here is a basic example of an appsettings.json file: { Logging: { LogLevel: { Default: Information Microsoft: Warning MyAppNamespace: Debug } } ConnectionStrings: { DefaultConnection: Server=myServerAddress;Database=myDataBase;User=myUsername;Password=myPassword; } AppSettings: { AppTitle: My .NET Core App MaxItemCount: 100 EnableFeatureX: true } } In this example: - The Logging section defines logging levels for different namespaces. - The ConnectionStrings section stores database connection strings. - The AppSettings section contains custom application settings like the application title maximum item count and feature toggles. By using appsettings.json developers can easily change application settings without modifying code. These settings can be accessed and utilized within the application through the .NET Core Configuration API. For instance to read a setting from appsettings.json in a .NET Core application you can use the ConfigurationBuilder like this: var builder = new ConfigurationBuilder() .SetBasePath(Directory.GetCurrentDirectory()) .AddJsonFile(appsettings.json); var configuration = builder.Build(); var appTitle = configuration[AppSettings:AppTitle]; This code snippet retrieves the value of AppTitle from the AppSettings section in appsettings.json. Overall appsettings.json is a crucial component in .NET Core applications for managing configuration settings in a structured and flexible manner.