我按照模式使用EF Core和ASP.NET核心,一切都很顺利。但最近我创建了一个“计算”项目,并希望从中进行数据库调用。
问题是我不知道如何创建新的DbContextOptions
。在我用
services.AddDbContext<RetContext>(options => options
.UseLazyLoadingProxies()
.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));
但是在新的.NET核心类中,我需要手动提供它。我该怎么做呢 ?我的代码是这样的:
public static class LoadData
{
public static IConfiguration Configuration { get; }
public static RefProgramProfileData Load_RefProgramProfileData(string code)
{
// var optionsBuilder = new DbContextOptionsBuilder<RetContext>();
// optionsBuilder.UseSqlServer(Configuration.GetConnectionString("DefaultConnection"));
//How do I make an optionsbuilder and get the configuration from the WEB project?
UnitOfWork uow = new UnitOfWork(new RetContext(optionsBuilder));
var loadedRefProgramProfileData = uow.RefProgramProfileDataRepository
.Find(x => x.ProgramCode == code).FirstOrDefault();
return loadedRefProgramProfileData;
}
}
答案 0 :(得分:1)
您可以像这样实例化DbContext
:
var builder = new ConfigurationBuilder().SetBasePath(Directory.GetCurrentDirectory()).AddJsonFile("appsettings.json");
var configuration = builder.Build();
var optionsBuilder = new DbContextOptionsBuilder<RetContext>();
optionsBuilder.UseSqlServer(configuration.GetConnection("DefaultConnection"));
_context = new RetContext(optionsBuilder.Options);