1、非数据模型作为数据模型的属性时,如果非数据模型中没有ID属性,则会报模型验证错误 (如:EntityType 'MonitorTag' has no key defined. Define the key for this EntityType) 解决方法:加上[NotMapped]属性 示例: User:是数据模型,MonitorTag是业务模型; public class User{ public string ID{ get;set;} [...
使用该类生成Controler类时发生异常 错误提示:EntityType has no key defined.Define the key for this EntityType.(网上资料不是很多,难道我哪里写错了?继续研究..) 从提示看,没有创建类数据的Key值,OK,我们在类中定义一个KEY, [Key] ---添加Key属性时引用了using System.ComponentModel.DataAnnotations命名空间 ...
可以做主键的类型只有两种 ，Guid或者Int。
entity type has no key defined error - help please! Enum and [Display(Name = "")] enum args in controller action methods? Enum Display within View enum to convert int in c# MVC? EnumDropDownListFor Set Default Value EPPlus multiple cell formatting not applying ERR_CACHE_MISS in MVC 5 ra...
System.Data.Edm.EdmEntityType: : EntityType 'UserInfo' has no key defined. Define the key for this EntityType.System.Data.Edm.EdmEntitySet: EntityType: EntitySet �UserInfo� is based on type �UserInfo� that has no keys defined. ...
EntityType [TableName] has no key defined. Define the key for this EntityType 2013-01-30 10:54 − Code First 1. 基于Model中 字段 ID / [className]+ID / 某字段有[Key] , 来自动生成主键的, 如果没有将会报如标题的错. public class Order{ public int ID{get;set;} } public clas.....
Define the key for this EntityType. Web.DAL.IdentityUserRole: : EntityType 'IdentityUserRole' has no key defined. Define the key for this EntityType. IdentityUserLogins: EntityType: EntitySet 'IdentityUserLogins' is based on type 'IdentityUserLogin' that has no keys defined. IdentityUse...
向GUID添加了一个EmployeeProfile和一个CustomerProfile
HasSharedClrType Gets a value indicating whether this structural type is mapped to a Type that other structural types are also mapped to. (Inherited from IReadOnlyTypeBase) IsKeyless Gets or sets a value indicating whether the entity type has no keys. If set to true it will only be ...
通俗地说，即使有攻击者在偷窥你与服务器的网络传输，客户端（client）依然可以利用“密钥协商机制”与服...