在ASP.NET Core的其他类中未获取连接字符串

Question

在Connection类中

public Connection(IConfiguration _Configuration)
{
    dbConnectionString = _Configuration.GetConnectionString("DefaultConnection");
}

在“配置方法”的“启动”类中

services.AddDbContext<Models.AwardContext>(option =>
option.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

Answer 1

您首先应该在Configuration中将Singleton添加为ConfigureServices：

 services.AddSingleton(_ => Configuration);