獲取ConnectionStrings節點資料

//appsettings.json

{
  "ConnectionStrings": {
    //DEV
    "DbConn": "Server=**;Integrated Security=no;User ID=**;PWD=**;initial catalog=DB**;MultipleActiveResultSets=true;Max Pool Size=1024;Min Pool Size=10;Pooling=true;"
    //QA
    //PROD
  },
  "ErrorPage": "/Error/Error",
  "Environment
 
": "DEV"
}

//startup.cs

 public Startup(IConfiguration configuration)   //依賴注入
        {
            _configuration = configuration;
        }

        public IConfiguration _configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public
 
 void ConfigureServices(IServiceCollection services)
        {
            string _conn;
            //config db
            try
            {
//GetSection("Environment")獲取Environment節點的資料
                if (_configuration.GetSection("Environment").Value.Equals("PROD", StringComparison.OrdinalIgnoreCase))
                {
                    
 
var service = new DecryptService("ProjectICE_Portal");
                    _conn = service.Decrypt(_configuration.GetConnectionString("DbConn"));//加密獲取節點資料
                }
                else
                {
                    _conn = _configuration.GetConnectionString("DbConn");//非加密
                }
            }
            catch (Exception ex)
            {
                throw new Exception($"Database connection initialization failed: {ex.Message}{ex.StackTrace}");
            }
}