how to get the connection string from appsettings.json code example

Example 1: how to get connection string value from appsettings.json in .net core

{
  "ConnectionStrings": {
    "myDb1": "Server=myServer;Database=myDb1;Trusted_Connection=True;",
    "myDb2": "Server=myServer;Database=myDb2;Trusted_Connection=True;"
  }
}

Example 2: how to define connection string in appsettings.json

{
  "Modules": {
    "Logging": {
      "logDb": "Server=myServer;Database=myDb1;Trusted_Connection=True;",
    },
    "Tenants": {
      "tenantsDb": "Server=myServer;Database=myDb1;Trusted_Connection=True;",
    }
  } 
}