验证导航属性是否遍历到另一实体集，然后再验证导航属性合作伙伴是否已遍历，目标是否将成为源实体集。
命名空间： Microsoft.Data.Edm.Validation
程序集： Microsoft.Data.Edm（在 Microsoft.Data.Edm.dll 中）
语法
声明
Public Shared ReadOnly EntitySetNavigationMappingMustBeBidirectional As ValidationRule(Of IEdmEntitySet)
用法
Dim value As ValidationRule(Of IEdmEntitySet)
value = ValidationRules.EntitySetNavigationMappingMustBeBidirectional
public static readonly ValidationRule<IEdmEntitySet> EntitySetNavigationMappingMustBeBidirectional
public:
static initonly ValidationRule<IEdmEntitySet^>^ EntitySetNavigationMappingMustBeBidirectional
static val EntitySetNavigationMappingMustBeBidirectional: ValidationRule<IEdmEntitySet>
public static final var EntitySetNavigationMappingMustBeBidirectional : ValidationRule<IEdmEntitySet>