asp.net - 对象引用不是......在 _mscustomerRepository.Insert(customer); 的时候

Question

我正在开发 Nopcommerce 2.40。我在项目中创建了新表、它的类和映射

班级代码

namespace Nop.Core.Domain.Customers
{
   public partial class MSCustomer:BaseEntity
    {


       public virtual string Name { get; set; }

        public virtual string Email { get; set; }

        public virtual string Address { get; set; }

       public virtual string PhoneNumber { get; set; }

       public virtual string ComapnyName { get; set; }


        public virtual DateTime CreatedOnUtc { get; set; }


    }
}

下面是我的映射

 public partial class MSCustomerMap : EntityTypeConfiguration<MSCustomer>
    {
        public MSCustomerMap()
        {
            this.ToTable("MSCustomer");
            this.HasKey(c => c.Id);
            this.Property(u => u.Name).HasMaxLength(1000);
            this.Property(u => u.Address).HasMaxLength(1000);
            this.Property(u => u.Email).HasMaxLength(100);
            this.Property(c => c.PhoneNumber).HasMaxLength(100);
            this.Property(c => c.CompanyName).HasMaxLength(100);

        }
    }



public virtual void CreateCustomer(MSCustomer customer)
        {
            if (customer == null)
                throw new ArgumentNullException("cutomer");

            _mscustomerRepository.Insert(customer);

            //event notification
            _eventPublisher.EntityUpdated(customer);

        }

我在数据库中创建了“MScustomer”表，但在插入时抛出错误“对象引用未设置为对象的实例”。

在控制器中，我将值分配给属性并将客户类传递给插入方法。有没有什么解决办法。

它在 _mscustomerRepository.Insert(customer); 处引发异常

提前致谢