【1】http://stackoverflow.com/questions/1761362/entity-framework-one-to-one-mapping-issues 【2】http://weblogs.asp.net/manavi/associations-in-ef-4-1-code-first-part-3-shared-primary-key-associations 这篇文章里告诉了你使用共享主键方法mapping一对一关系的方法,以及“弊端”,个人觉得弊端说的不是特...
请指定 ON DELETE NO ACTION 或 ON UPDATE NO ACTION,或修改其他 FOREIGN KEY 约束。 无法创建约束。请参阅前面的错误消息。 多重循环引用,纳尼, 难道是SystemAccount中加载了User的导航,User中也有,重复了?于是乎,注释掉UserMapping中的导航配置 1 //this.HasRequired(r => r.Account).WithMany().Has...
程序集: EntityFramework.dll 配置外键的列名。 C# 复制 public System.Data.Entity.ModelConfiguration.Configuration.ForeignKeyAssociationMappingConfiguration MapKey (params string[] keyColumnNames); 参数 keyColumnNames String[] 外键列名。 使用多个外键属性时,必须按照为目标实体类型配...
Currently, I've been trying to figure out how to have the current entity framework completely ignore foreign key associations. Anybody know if this is possible? Thanks, Paul Anonymous June 19, 2009 What are Stub Entities? A stub entity is a partially populated entity that stands in for the ...
Mapping Specification Language (MSL) - 對應規格語言 (MSL) XML 架構語言,用來將定義於概念模型中的項目對應到儲存體模型中的項目。 如需詳細資訊,請參閱MSL 規格。 Modification Function - 修改函式 用於插入、更新和刪除資料來源中之資料的預存程序。 這些函式可用來代替 Entity Framework 產生的命令。 修改函...
如需詳細資訊,請參閱 Entity Framework 的過去版本。 Object Layer - 物件層 Entity Framework 所使用的實體類型和內容物件定義。 Object Query - 物件查詢 在物件內容中針對概念模型執行的查詢,該物件內容會傳回資料做為物件。 如需詳細資訊,請參閱 物件查詢。 Object-Relational Mapping - 物件關聯式對應 將資料...
public class PostMap : EntityMappingConfiguration<Post> { public override void Map(EntityTypeBuilder<Post> b) { b.ToTable("Post"); b.HasKey(k => k.Id); b.Property(p => p.Title); b.Property(p => p.Content); } } 1. 2. ...
Bug #70795Entity Framework migration with Foreign Key fails Submitted:1 Nov 2013 10:44Modified:11 Dec 2013 18:22 Reporter:Toivo AasmaEmail Updates: Status:ClosedImpact on me: None Category:Connector / NETSeverity:S2 (Serious) Version:6.7.4OS:Windows ...
Entity mapping is just some simple mappings that will impact Entity Framework's understanding of how the classes are mapped to the databases. All these we discussed in data annotations and here we will see how to achieve the same things using Fluent API. So rather than going into the domain...
Entity Framework now includes support for foreign keys. Foreign key associations allow you to include foreign key properties on your entities, simplifying a number of key scenarios including data binding and n-tier development. Foreign keys can be used to setup entity relationships using foreign key...