IObjectSet<TEntity> 接口

定义

提供允许对一组数据对象进行修改的功能。Provides functionality to allow making modifications to a set of data objects.

generic <typename TEntity>
 where TEntity : classpublic interface class IObjectSet : System::Collections::Generic::IEnumerable<TEntity>, System::Linq::IQueryable<TEntity>
public interface IObjectSet<TEntity> : System.Collections.Generic.IEnumerable<TEntity>, System.Linq.IQueryable<TEntity> where TEntity : class
type IObjectSet<'Entity (requires 'Entity : null)> = interface
    interface IQueryable<'Entity (requires 'Entity : null)>
    interface seq<'Entity (requires 'Entity : null)>
    interface IEnumerable
    interface IQueryable
Public Interface IObjectSet(Of TEntity)
Implements IEnumerable(Of TEntity), IQueryable(Of TEntity)

类型参数

TEntity

从查询返回的实体对象的类型。The type of an entity object returned from the query.

派生
实现

属性

ElementType

获取在执行与 IQueryable 的此实例关联的表达式树时返回的元素的类型。Gets the type of the element(s) that are returned when the expression tree associated with this instance of IQueryable is executed.

(继承自 IQueryable)
Expression

获取与 IQueryable 的实例关联的表达式树。Gets the expression tree that is associated with the instance of IQueryable.

(继承自 IQueryable)
Provider

获取与此数据源相关联的查询提供程序。Gets the query provider that is associated with this data source.

(继承自 IQueryable)

方法

AddObject(TEntity)

通知对象集,必须将表示新实体的对象添加到该集中。Notifies the set that an object that represents a new entity must be added to the set.

Attach(TEntity)

通知对象集,必须将表示现有实体的对象添加到该集中。Notifies the set that an object that represents an existing entity must be added to the set.

DeleteObject(TEntity)

通知对象集必须从中删除表示现有实体的对象。Notifies the set that an object that represents an existing entity must be deleted from the set.

Detach(TEntity)

通知对象集必须从中分离表示现有实体的对象。Notifies the set that an object that represents an existing entity must be detached from the set.

GetEnumerator()

返回循环访问集合的枚举数。Returns an enumerator that iterates through a collection.

(继承自 IEnumerable)

扩展方法

CopyToDataTable<T>(IEnumerable<T>)

在给定其泛型参数 TDataTable 的输入 DataRow 对象的情况下,返回包含 IEnumerable<T> 对象副本的 DataRowReturns a DataTable that contains copies of the DataRow objects, given an input IEnumerable<T> object where the generic parameter T is DataRow.

CopyToDataTable<T>(IEnumerable<T>, DataTable, LoadOption)

在给定其泛型参数 TDataRow 的输入 DataTable 对象的情况下,将 IEnumerable<T> 对象复制到指定的 DataRowCopies DataRow objects to the specified DataTable, given an input IEnumerable<T> object where the generic parameter T is DataRow.

CopyToDataTable<T>(IEnumerable<T>, DataTable, LoadOption, FillErrorEventHandler)

在给定其泛型参数 TDataRow 的输入 DataTable 对象的情况下,将 IEnumerable<T> 对象复制到指定的 DataRowCopies DataRow objects to the specified DataTable, given an input IEnumerable<T> object where the generic parameter T is DataRow.

Cast<TResult>(IEnumerable)

IEnumerable 的元素强制转换为指定的类型。Casts the elements of an IEnumerable to the specified type.

OfType<TResult>(IEnumerable)

根据指定类型筛选 IEnumerable 的元素。Filters the elements of an IEnumerable based on a specified type.

AsParallel(IEnumerable)

启用查询的并行化。Enables parallelization of a query.

AsQueryable(IEnumerable)

IEnumerable 转换为 IQueryableConverts an IEnumerable to an IQueryable.

Cast<TResult>(IQueryable)

IQueryable 的元素转换为指定的类型。Converts the elements of an IQueryable to the specified type.

OfType<TResult>(IQueryable)

根据指定类型筛选 IQueryable 的元素。Filters the elements of an IQueryable based on a specified type.

SortBy<T>(IQueryable<T>, String)

指定排序顺序。Specifies a sort order.

Ancestors<T>(IEnumerable<T>)

返回元素集合,其中包含源集合中每个节点的上级。Returns a collection of elements that contains the ancestors of every node in the source collection.

Ancestors<T>(IEnumerable<T>, XName)

返回经过筛选的元素集合,其中包含源集合中每个节点的上级。Returns a filtered collection of elements that contains the ancestors of every node in the source collection. 集合中仅包括具有匹配 XName 的元素。Only elements that have a matching XName are included in the collection.

DescendantNodes<T>(IEnumerable<T>)

返回源集合中每个文档和元素的子代节点的集合。Returns a collection of the descendant nodes of every document and element in the source collection.

Descendants<T>(IEnumerable<T>)

返回元素集合,其中包含源集合中每个元素和文档的子代元素。Returns a collection of elements that contains the descendant elements of every element and document in the source collection.

Descendants<T>(IEnumerable<T>, XName)

返回经过筛选的元素集合,其中包含源集合中每个元素和文档的子代元素。Returns a filtered collection of elements that contains the descendant elements of every element and document in the source collection. 集合中仅包括具有匹配 XName 的元素。Only elements that have a matching XName are included in the collection.

Elements<T>(IEnumerable<T>)

返回源集合中每个元素和文档的子元素的集合。Returns a collection of the child elements of every element and document in the source collection.

Elements<T>(IEnumerable<T>, XName)

返回源集合中经过筛选的每个元素和文档的子元素集合。Returns a filtered collection of the child elements of every element and document in the source collection. 集合中仅包括具有匹配 XName 的元素。Only elements that have a matching XName are included in the collection.

InDocumentOrder<T>(IEnumerable<T>)

返回节点集合(其中包含源集合中的所有节点),并按文档顺序排列。Returns a collection of nodes that contains all nodes in the source collection, sorted in document order.

Nodes<T>(IEnumerable<T>)

返回源集合中每个文档和元素的子节点集合。Returns a collection of the child nodes of every document and element in the source collection.

Remove<T>(IEnumerable<T>)

将源集合中的每个节点从其父节点中移除。Removes every node in the source collection from its parent node.

适用于