C# 实体框架：在6.1.1中检查实体的所有关系失败

在使用EntityFramework版本时，我成功地使用此代码检查了所有关系。5. （摘自yildizm85）

升级到EF 6.1.1后失败。 错误消息是：

Unable to cast object of type 'System.Data.Entity.DynamicProxies.UnitName_F023365757AB452259D6FFA34E2DC147E423592BFB4A49619F41A60AA3AF5ECA' to type 'System.Data.Objects.DataClasses.IEntityWithRelationships'.

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使用EF 6.1.1检查所有关系是否有更好的方法？

我在将实体的动态代理实例强制转换到EF 6.1.3的

IEntityWithRelationships

接口时遇到了相同的问题！ 由于我没有父项的所有关联实体的导航属性，因此我提出了这个基于反射的代码，以最终获得

RelationshipManager

实例：

var entityProxy = DbContext.FooBars.First(fb => fb.Id == someId);
var proxyType = entityProxy.GetType();

var wrapperField = proxyType.GetField("_entityWrapper");
var wrapper = wrapperField.GetValue(entityProxy);
var wrapperType = wrapper.GetType();

var relManProp = wrapperType.GetProperty("RelationshipManager");
Debug.Assert(relManProp != null, nameof(relManProp) + " != null");
var relMan = (RelationshipManager)relManProp.GetValue(wrapper);

var allEnds = relMan.GetAllRelatedEnds();
foreach (var relatedEnd in allEnds)
{
    Debug.Print("RELATIONSHIP-NAME:" + relatedEnd.RelationshipName);
} 

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我认为使用

var wrapperField=proxyType.GetField（“_entityWrapper”）var entityProxy = DbContext.FooBars.First(fb => fb.Id == someId);
var proxyType = entityProxy.GetType();

var wrapperField = proxyType.GetField("_entityWrapper");
var wrapper = wrapperField.GetValue(entityProxy);
var wrapperType = wrapper.GetType();

var relManProp = wrapperType.GetProperty("RelationshipManager");
Debug.Assert(relManProp != null, nameof(relManProp) + " != null");
var relMan = (RelationshipManager)relManProp.GetValue(wrapper);

var allEnds = relMan.GetAllRelatedEnds();
foreach (var relatedEnd in allEnds)
{
    Debug.Print("RELATIONSHIP-NAME:" + relatedEnd.RelationshipName);
}