Question

我在SimpleRepository中使用Subsonic：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using SubSonic.DataProviders;
using SubSonic.Repository;

namespace SubSonicTest
{
    class Program
    {
        public class Product
        {
            public int ProductID { get; set; }
            public int CategoryID { get; set; }
            public string ProductName { get; set; }
            public decimal UnitPrice { get; set; }
            public bool Discontinued { get; set; }


        }
        static void Main(string[] args)
        {

            var repo = new SimpleRepository("SubSonic", SimpleRepositoryOptions.RunMigrations);
            var newProduct = new Product();
            newProduct.CategoryID = 5;
            newProduct.ProductName = "Pretzel";
            newProduct.UnitPrice = 100;
            newProduct.Discontinued = false;
            repo.Add<Product>(newProduct);
        }
    }
}

然而，当我运行它时，我得到：列'CategoryID'不能为空这是MySQL和Windows和VS2008。有什么想法吗？

由于

Answer 1

尝试更改类属性定义;

public int? CategoryID { get; set; }

您无法将int类型设置为null。

SubSonic3 - 列'CategoryID'不能为空

1 个答案: