1)数据库表明的映射
首先我们先来看看数据表明的映射。这里我需要将Departments映射到表名为tb_Departments的表上:
protected override void OnModelCreating(System.Data.Entity.ModelConfiguration.ModelBuilder modelBuilder) { modelBuilder.Entity<Department>().MapSingleType().ToTable("tb_Departments"); }
2)字段的映射
我想在数据库中的每个字段中都会加上前缀“col_”,比如DepartmentID就是“col_DepartmentID”:
protected override void OnModelCreating(System.Data.Entity.ModelConfiguration.ModelBuilder modelBuilder) { modelBuilder.Entity<Department>().MapSingleType(depart => new { col_DepartmentID = depart.DepartmentID, col_DepartmentName = depart.DepartName, col_Remark = depart.Remark }) .ToTable("tb_Departments"); }
3)复杂类型的映射
在这里我们添加一个CreateInfo的Model:
public class CreateInfo { public string CreateUserID { get; set; } public DateTime? CreateDate { get; set; } }
public class Department { public int DepartmentID { get; set; } public string DepartName { get; set; } public string Remark { get; set; } public CreateInfo CreateInfo { get; set; } public virtual ICollection<Employee> Employees { get; set; } }
protected override void OnModelCreating(System.Data.Entity.ModelConfiguration.ModelBuilder modelBuilder) { modelBuilder.Entity<Department>().MapSingleType(depart => new { col_DepartmentID = depart.DepartmentID, col_DepartmentName = depart.DepartName, col_Remark = depart.Remark, col_CreateUserID= depart.CreateInfo.CreateUserID, col_CreateDate = depart.CreateInfo.CreateDate }) .ToTable("tb_Departments"); }
原因是我们没有注册CreateInfo为complex 类型。所以我们首先需要注册CreateInfo为复合类型,在OnModelCreating中加上注册的代码:
OK.