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我想通过开发人员命令提示符为VS2015创建数据库EF迁移。当我尝试使用以下命令行：尝试使用实体框架和迁移创建数据库时遇到问题
dotnet ef migrations add v1
我得到这个错误：
The property 'partCategoriess' cannot be added to the entity type 'PartCategoryPart' because a navigation property with the same name already exists on entity type 'PartCategoryPart'.
是什么毛病DbContext？我正在尝试创建一个介于categoryParts和parts之间的多对多表。
public class ShoppingDbContext : IdentityDbContext<User>
{
public ShoppingDbContext(DbContextOptions options) : base(options)
{
}
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
base.OnConfiguring(optionsBuilder);
}
public DbSet<PartCategory> PartCategories { get; set; }
public DbSet<Part> Parts { get; set; }
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.Entity<PartCategoryPart>()
.HasKey(t => new { t.partCategoriess, t.Part });
modelBuilder.Entity<PartCategoryPart>()
.HasOne(pt => pt.partCategoriess)
.WithMany(p => p.PartCategoryPart)
.HasForeignKey(pt => pt.PartCategoryId);
modelBuilder.Entity<PartCategoryPart>()
.HasOne(pt => pt.Part)
.WithMany(t => t.PartCategoryPart)
.HasForeignKey(pt => pt.PartId);
}
}
public class PartCategoryPart
{
public int Id { get; set; }
public int PartCategoryId { get; set; }
public PartCategory partCategoriess { get; set; }
public int PartId { get; set; }
public Part Part { get; set; }
}
public class PartCategory
{
public int PartCategoryId { get; set; }
public string Category { get; set; }
public List<ProductPartCategory> ProductPartCategories { get; set; }
public List<PartCategoryPart> PartCategoryPart { get; set; }
}
public class Part
{
public int PartId { get; set; }
public string Code { get; set; }
public string Name { get; set; }
public double? Price { get; set; }
public List<PartCategoryPart> PartCategoryPart { get; set; }
}