我正在使用成员资格数据库进行用户管理。 布局如下:
如您所见,我添加了一个新表“下载”。 在此表中,我想存储一些其他信息。
我上课了:
public class DownloadInformation
{
public int Id { get; set;}
public int UserId { get; set;}
public string UserName { get; set;}
public string Filename { get; set;}
public string UserIpAddress { get; set;}
public DateTime DownloadDate { get; set; }
}
在我的ApplicationDbContext中,我做了以下事情:
public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
public ApplicationDbContext()
: base("DefaultConnection")
{
}
protected override void OnModelCreating(System.Data.Entity.DbModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
var idUser = modelBuilder.Entity<IdentityUser>().ToTable("UserView");
idUser.Property(p => p.Id).HasColumnName("UserId");
idUser.Property(p => p.PasswordHash).HasColumnName("Password");
idUser.Property(p => p.SecurityStamp).HasColumnName("PasswordSalt");
idUser.Property(p => p.UserName).HasColumnName("UserName");
var appUser = modelBuilder.Entity<ApplicationUser>().ToTable("UserView");
appUser.Property(p => p.Id).HasColumnName("UserId");
appUser.Property(p => p.PasswordHash).HasColumnName("Password");
appUser.Property(p => p.SecurityStamp).HasColumnName("PasswordSalt");
appUser.Property(p => p.UserName).HasColumnName("UserName");
appUser.Property(p => p.Email).HasColumnName("Email");
var download = modelBuilder.Entity<DownloadInformation>().ToTable("Downloads");
download.Property(p => p.Id).HasColumnName("Id");
download.Property(p => p.UserId).HasColumnName("UserId");
download.Property(p => p.UserIpAddress).HasColumnName("UserIpAddress");
download.Property(p => p.UserName).HasColumnName("UserName");
download.Property(p => p.Filename).HasColumnName("Filename");
download.Property(p => p.DownloadDate).HasColumnName("DownloadDate");
}
}
但是当我尝试执行以下操作时:
using (ApplicationDbContext app = new ApplicationDbContext())
{
DownloadInformation downloadInfo = new DownloadInformation() { UserId = user.UserId, UserName = user.UserName, UserIpAddress = user.IpAddress, Filename = document.FilePath, DownloadDate = DateTime.Now };
app.Download.Add(downloadInfo);
app.SaveChanges();
}
编译时,我收到以下错误:
'CustomerPortalDomain.Entities.ApplicationDbContext'不包含“下载”的定义,也没有扩展方法“下载”接受类型为“CustomerPortalDomain.Entities.ApplicationDbContext”的第一个参数(您是否缺少using指令或汇编参考?)
我忘记了什么?我错过了什么?
答案 0 :(得分:2)
看起来您没有向ApplicationDbContext添加任何“下载”属性
public DbSet<DownloadInformation> Download{ get; set; }