DefaultExpressionVisitor.VisitGroupAggregate 方法
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实现组聚合的访问者模式。
命名空间: System.Data.Entity.Core.Common.CommandTrees
程序集: EntityFramework(在 EntityFramework.dll 中)
语法
声明
Protected Overridable Function VisitGroupAggregate ( _
aggregate As DbGroupAggregate _
) As DbGroupAggregate
用法
Dim aggregate As DbGroupAggregate
Dim returnValue As DbGroupAggregate
returnValue = Me.VisitGroupAggregate(aggregate)
protected virtual DbGroupAggregate VisitGroupAggregate(
DbGroupAggregate aggregate
)
protected:
virtual DbGroupAggregate^ VisitGroupAggregate(
DbGroupAggregate^ aggregate
)
abstract VisitGroupAggregate :
aggregate:DbGroupAggregate -> DbGroupAggregate
override VisitGroupAggregate :
aggregate:DbGroupAggregate -> DbGroupAggregate
protected function VisitGroupAggregate(
aggregate : DbGroupAggregate
) : DbGroupAggregate
参数
- aggregate
类型:System.Data.Entity.Core.Common.CommandTrees.DbGroupAggregate
聚合。
返回值
类型:System.Data.Entity.Core.Common.CommandTrees.DbGroupAggregate
实现的访问者模式。