我正在尝试在我的控制台应用程序中配置实体框架7。
然而,我注意到DbContextOptionBuilder中未定义“UseSqlServer”。
以下是代码:
public class LetsBreakITContext : DbContext
{
public DbSet<Book> Books { get; set; }
public DbSet<Country> Countries { get; set; }
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
optionsBuilder.UseSqlServer(@"Server=(localdb)\mssqllocaldb;Database=EFGetStarted.ConsoleApp.NewDb;Trusted_Connection=True;");
}
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
//country
modelBuilder.Entity<Country>(c =>
{
c.HasKey(e => e.CountryId);
c.Property(e => e.CountryId).ValueGeneratedOnAdd();
c.Property(e => e.CountryId).IsRequired();
c.Property(e => e.Name).IsRequired();
});
//Book
modelBuilder.Entity<Book>(l =>
{
l.HasKey(e => e.BookId);
l.Property(e => e.BookId).ValueGeneratedOnAdd();
l.Property(e => e.CountryId).IsRequired();
l.Property(e => e.Name).IsRequired();
});
}
}
我使用Nuget添加了EF 7 "install-package entityframework.commands -pre"
我正在使用微软EF 7文档中的示例代码,不确定我漏掉了什么。
-Alan-