Net Core + EF Core + Sql Server

class UsersInfo { [DatabaseGenerated(DatabaseGeneratedOption.Identity)] //设置自增 public int SeqNum { get; set; } [Key,MaxLength(50)] public string UserID { get; set; } //[Required]必填 [Required,MaxLength(50)] public string UserName { get; set; } [MaxLength(1)] public int Gender { get; set; } [MaxLength(50)] public string BelongClass { get; set; } [MaxLength(255)] public string Disc { get; set; } } 实体

 

 

3.再创建一个类库项目

　　创建DemoContext类（与数据库交互）

　　

 

　　

public class DemoContext : DbContext
    {
        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            optionsBuilder.UseSqlServer(
                connectionString: "server=.;database=MyTestDB;uid=sjz2018dbuser;pwd=1ECD9E*#E9DCE1;"
            );
        }

        public DbSet<ClassInfo> ClassInfos { get; set; }
        public DbSet<UsersInfo> UsersInfos { get; set; }
    }

DemoContext

 

所引nuget包

 

Net Core + EF Core + Sql Server

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