What is the difference between C# configuration files AppSettings and ConnectionStrings?

AppSettings is a node used to store configuration information for an application, in the form of key-value pairs. It can store various types of configuration information such as database connection strings, API keys, and more.

ConnectionStrings is a node used to store database connection strings. It is specifically used to store database connection information and can store multiple database connection strings distinguished by name. The connection string contains information necessary to connect to the database, such as the database server address, database name, user credentials, and so on.

In conclusion, AppSettings is used to store various types of application configuration information, whereas ConnectionStrings is used to store database connection strings. The main difference between the two lies in the type of content stored and their respective purposes.