EntityDataSource 类

定义

表示 ASP.NET 应用程序中数据绑定控件的实体数据模型 (EDM)。Represents an Entity Data Model (EDM) to data-bound controls in an ASP.NET application.

public ref class EntityDataSource : System::Web::UI::DataSourceControl, System::Web::DynamicData::IDynamicDataSource, System::Web::UI::WebControls::IQueryableDataSource
[System.Drawing.ToolboxBitmap(typeof(System.Web.UI.WebControls.EntityDataSource), "EntityDataSource.ico")]
public class EntityDataSource : System.Web.UI.DataSourceControl, System.Web.DynamicData.IDynamicDataSource, System.Web.UI.WebControls.IQueryableDataSource
type EntityDataSource = class
    inherit DataSourceControl
    interface IDynamicDataSource
    interface IDataSource
    interface IQueryableDataSource
Public Class EntityDataSource
Inherits DataSourceControl
Implements IDynamicDataSource, IQueryableDataSource
继承
EntityDataSource
属性
实现

注解

本主题内容:In this topic:

介绍Introduction

您可以将EntityDataSource控件与数据绑定控件一起使用, 以从 EDM 中检索数据, 并使用少量或没有代码对网页上的数据进行显示、编辑和排序。You can use the EntityDataSource control together with a data-bound control to retrieve data from an EDM and to display, edit, and sort data on a Web page by using little or no code. 有关详细信息, 请参阅EntityDataSource Web 服务器控件概述For more information, see EntityDataSource Web Server Control Overview.

声明性语法Declarative Syntax

<asp:EntityDataSource  
    AutoGenerateOrderByClause="True|False"  
    AutoGenerateWhereClause="True|False"  
    AutoPage="True|False"  
    AutoSort="True|False"  
    CommandText="string"  
    ConnectionString="string"  
    ContextType="typed ObjectContext"  
    ContextTypeName="string"  
    DefaultContainerName="string"  
    EnableDelete="True|False"  
    EnableInsert="True|False"  
    EnableUpdate="True|False"  
    EnableViewState="True|False"  
    EntitySetName="string"  
    EntityTypeFilter="string"  
    GroupBy="string"  
    Include="string"  
    OnContextCreated="ContextCreated event handler"  
    OnContextCreating="ContextCreating event handler"  
    OnContextDisposing="ContextDisposing event handler"  
    OnDataBinding="DataBinding event handler"  
    OnDeleted="Deleted event handler"  
    OnDeleting="Deleting event handler"  
    OnException="IDynamicDataSource.Exception event handler"  
    OnInserted="Inserted event handler"  
    OnInserting="Inserting event handler"  
    OnSelected="Selected event handler"  
    OnSelecting="Selecting event handler"  
    OnUpdated="Updated event handler"  
    OnUpdating="Updating event handler"  
    OrderBy="string"  
    runat="server"  
    Select="string"  
    StoreOriginalValuesInViewState="True|False"  
    Where="string"  
>  
        <CommandParameters />  
        <DeleteParameters />  
        <GroupByParameters />  
        <InsertParameters />  
        <OrderByParameters />  
        <SelectParameters />  
        <UpdateParameters />  
        <WhereParameters />  
</asp:EntityDataSource>  

构造函数

EntityDataSource()

初始化 EntityDataSource 类的新实例。Initializes a new instance of the EntityDataSource class.

EntityDataSource(EntityConnection)

使用提供的连接初始化 EntityDataSource 类的新实例。Initializes a new instance of the EntityDataSource class with the provided connection.

属性

Adapter

获取控件的浏览器特定适配器。Gets the browser-specific adapter for the control.

(继承自 Control)
AppRelativeTemplateSourceDirectory

获取或设置包含该控件的 PageUserControl 对象的应用程序相对虚拟目录。Gets or sets the application-relative virtual directory of the Page or UserControl object that contains this control.

(继承自 Control)
AutoGenerateOrderByClause

获取或设置一个值,该值指示 EntityDataSource 控件是否根据 OrderByParameters 集合中的值动态创建 ORDER BY 子句。Gets or sets a value that indicates whether the EntityDataSource control dynamically creates an ORDER BY clause based on values in the OrderByParameters collection.

AutoGenerateWhereClause

获取或设置一个值,该值指示 EntityDataSource 控件是否基于 WhereParameters 集合中定义的值来动态创建 WHERE 子句。Gets or sets a value that indicates whether the EntityDataSource control dynamically creates a WHERE clause based on values defined in the WhereParameters collection.

AutoPage

获取或设置一个值,该值指示 EntityDataSource 控件是否支持在运行时在数据的各部分之间导航。Gets or sets a value that indicates whether the EntityDataSource control supports navigation through sections of the data at run time.

AutoSort

获取或设置一个值,该值指示 EntityDataSource 控件是否支持在运行时对数据进行排序。Gets or sets a value that indicates whether the EntityDataSource control supports sorting the data at run time.

BindingContainer

获取包含该控件的数据绑定的控件。Gets the control that contains this control's data binding.

(继承自 Control)
ChildControlsCreated

获取一个值,该值指示是否已创建服务器控件的子控件。Gets a value that indicates whether the server control's child controls have been created.

(继承自 Control)
ClientID

获取由 ASP.NET 生成的服务器控件标识符。Gets the server control identifier generated by ASP.NET.

(继承自 DataSourceControl)
ClientIDMode

此属性不用于数据源控件。This property is not used for data source controls.

(继承自 DataSourceControl)
ClientIDSeparator

获取一个字符值,该值表示 ClientID 属性中使用的分隔符字符。Gets a character value representing the separator character used in the ClientID property.

(继承自 Control)
CommandParameters

获取查询的参数集合。Gets the parameter collection for the query.

CommandText

获取或设置定义查询的 Entity SQL 命令。Gets or sets an Entity SQL command that defines the query.

ConnectionString

获取或设置用于执行查询的连接字符串。Gets or sets the connection string that is used to execute the query.

Context

为当前 Web 请求获取与服务器控件关联的 HttpContext 对象。Gets the HttpContext object associated with the server control for the current Web request.

(继承自 Control)
ContextType

获取或设置 ObjectContext 控件使用的类型化 EntityDataSourceGets or sets the typed ObjectContext used by the EntityDataSource control.

ContextTypeName

获取或设置 ObjectContext 控件使用的类型化 EntityDataSource 的完全限定名。Gets or sets the fully qualified name of the typed ObjectContext that is used by the EntityDataSource control.

Controls

获取 ControlCollection 对象,该对象表示 UI 层次结构中的指定服务器控件的子控件。Gets a ControlCollection object that represents the child controls for a specified server control in the UI hierarchy.

(继承自 DataSourceControl)
DataItemContainer

如果命名容器实现 IDataItemContainer,则获取对命名容器的引用。Gets a reference to the naming container if the naming container implements IDataItemContainer.

(继承自 Control)
DataKeysContainer

如果命名容器实现 IDataKeysControl,则获取对命名容器的引用。Gets a reference to the naming container if the naming container implements IDataKeysControl.

(继承自 Control)
DefaultContainerName

获取或设置默认容器名称。Gets or sets the default container name.

DeleteParameters

获取在删除操作过程中使用的参数的集合。Gets the collection of parameters that are used during a delete operation.

DesignMode

获取一个值,该值指示是否正在使用设计图面上的一个控件。Gets a value indicating whether a control is being used on a design surface.

(继承自 Control)
EnableDelete

获取或设置一个值,该值指示是否可以通过 EntityDataSource 控件删除对象。Gets or sets a value that indicates whether objects can be deleted through the EntityDataSource control.

EnableFlattening

获取或设置一个值,该值指示是否关闭包装创建。Gets or sets the value that indicates whether you want to turn off wrapper creation.

EnableInsert

获取或设置一个值,该值指示是否可以通过 EntityDataSource 控件添加对象。Gets or sets a value that indicates whether objects can be added through the EntityDataSource control.

EnableTheming

获取一个值,该值指示此控件是否支持主题。Gets a value indicating whether this control supports themes.

(继承自 DataSourceControl)
EnableUpdate

获取或设置一个值,该值指示是否可以通过 EntityDataSource 控件修改对象。Gets or sets a value that indicates whether objects can be modified through the EntityDataSource control.

EnableViewState

获取或设置一个值,该值指示服务器控件是否向发出请求的客户端保持自己的视图状态以及它所包含的任何子控件的视图状态。Gets or sets a value indicating whether the server control persists its view state, and the view state of any child controls it contains, to the requesting client.

(继承自 Control)
EntitySetName

获取或设置 EntityDataSource 控件使用的实体集的名称。Gets or sets the name of the entity set used by the EntityDataSource control.

EntityTypeFilter

获取或设置将查询结果限定为特定派生类型的表达式。Gets or sets the expression that limits the query to only results of a specific derived type.

Events

获取控件的事件处理程序委托列表。Gets a list of event handler delegates for the control. 此属性是只读的。This property is read-only.

(继承自 Control)
GroupBy

获取或设置指定如何对查询结果分组的 Entity SQL 表达式。Gets or sets the Entity SQL expression that specifies how to group the query results.

HasChildViewState

获取一个值,该值指示当前服务器控件的子控件是否具有任何已保存的视图状态设置。Gets a value indicating whether the current server control's child controls have any saved view-state settings.

(继承自 Control)
ID

获取或设置分配给服务器控件的编程标识符。Gets or sets the programmatic identifier assigned to the server control.

(继承自 Control)
IdSeparator

获取用于分隔控件标识符的字符。Gets the character used to separate control identifiers.

(继承自 Control)
Include

获取或设置指定要包含在查询结果中的相关对象的表达式。Gets or sets the expression that specifies the related objects to include in the query results.

InsertParameters

获取在插入操作过程中使用的参数的集合。Gets the collection of parameters that are used during an insert operation.

IsChildControlStateCleared

获取一个值,该值指示该控件中包含的控件是否具有控件状态。Gets a value indicating whether controls contained within this control have control state.

(继承自 Control)
IsTrackingViewState

获取一个值,用于指示服务器控件是否会将更改保存到其视图状态中。Gets a value that indicates whether the server control is saving changes to its view state.

(继承自 Control)
IsViewStateEnabled

获取一个值,该值指示是否为该控件启用了视图状态。Gets a value indicating whether view state is enabled for this control.

(继承自 Control)
LoadViewStateByID

获取一个值,该值指示控件是否通过 ID 而不是索引参与加载其视图状态。Gets a value indicating whether the control participates in loading its view state by ID instead of index.

(继承自 Control)
NamingContainer

获取对服务器控件的命名容器的引用,此引用创建唯一的命名空间,以区分具有相同 ID 属性值的服务器控件。Gets a reference to the server control's naming container, which creates a unique namespace for differentiating between server controls with the same ID property value.

(继承自 Control)
OrderBy

获取或设置指定如何对查询结果进行排序的 Entity SQL 表达式。Gets or sets the Entity SQL expression that specifies how to order the query results.

OrderByParameters

获取用于创建 ORDER BY 子句的参数的集合。Gets the collection of parameters that are used to create the ORDER BY clause.

Page

获取对包含服务器控件的 Page 实例的引用。Gets a reference to the Page instance that contains the server control.

(继承自 Control)
Parent

获取对页 UI 层次结构中服务器控件的父控件的引用。Gets a reference to the server control's parent control in the page control hierarchy.

(继承自 Control)
RenderingCompatibility

获取一个值,该值指定呈现的 HTML 将与之兼容的 ASP.NET 版本。Gets a value that specifies the ASP.NET version that rendered HTML will be compatible with.

(继承自 Control)
Select

获取或设置投影,该投影定义要包括在查询结果中的属性。Gets or sets the projection that defines the properties to include in the query results.

SelectParameters

获取用于创建投影的参数的集合。Gets the collection of parameters that are used to create the projection.

Site

获取容器信息,该容器在呈现于设计图面上时承载当前控件。Gets information about the container that hosts the current control when rendered on a design surface.

(继承自 Control)
SkinID

获取要应用于 DataSourceControl 控件的外观。Gets the skin to apply to the DataSourceControl control.

(继承自 DataSourceControl)
StoreOriginalValuesInViewState

获取或设置一个值,该值指示数据源中的数据是否存储在视图状态中,以确保数据在更新或删除之前不会由其他进程更改。Gets or sets a value that indicates whether the data from the data source should be stored in view state to make sure that the data has not been changed by another process before it is updated or deleted.

TemplateControl

获取或设置对包含该控件的模板的引用。Gets or sets a reference to the template that contains this control.

(继承自 Control)
TemplateSourceDirectory

获取包含当前服务器控件的 PageUserControl 的虚拟目录。Gets the virtual directory of the Page or UserControl that contains the current server control.

(继承自 Control)
UniqueID

获取服务器控件的唯一的、以分层形式限定的标识符。Gets the unique, hierarchically qualified identifier for the server control.

(继承自 Control)
UpdateParameters

获取在更新操作过程中使用的参数的集合。Gets the collection of parameters that are used during an update operation.

ValidateRequestMode

获取或设置指示控件是否检查来自浏览器的客户端输入是否具有潜在危险值的值。Gets or sets a value that indicates whether the control checks client input from the browser for potentially dangerous values.

(继承自 Control)
ViewState

获取状态信息的字典,这些信息使您可以在同一页的多个请求间保存和还原服务器控件的视图状态。Gets a dictionary of state information that allows you to save and restore the view state of a server control across multiple requests for the same page.

(继承自 Control)
ViewStateIgnoresCase

获取一个值,该值指示 StateBag 对象是否不区分大小写。Gets a value that indicates whether the StateBag object is case-insensitive.

(继承自 Control)
ViewStateMode

获取或设置此控件的视图状态模式。Gets or sets the view-state mode of this control.

(继承自 Control)
Visible

获取或设置一个值,该值指示是否以可视化方式显示控件。Gets or sets a value indicating whether the control is visually displayed.

(继承自 DataSourceControl)
Where

获取或设置指定如何筛选查询结果的 Entity SQL 表达式。Gets or sets the Entity SQL expression that specifies how to filter the query results.

WhereParameters

获取用于创建 WHERE 子句的参数的集合。Gets the collection of parameters that are used to create the WHERE clause.

方法

AddedControl(Control, Int32)

在子控件添加到 Control 对象的 Controls 集合后调用。Called after a child control is added to the Controls collection of the Control object.

(继承自 Control)
AddParsedSubObject(Object)

通知服务器控件,分析了一个元素(XML 或 HTML),并将该元素添加到服务器控件的 ControlCollection 对象中。Notifies the server control that an element, either XML or HTML, was parsed, and adds the element to the server control's ControlCollection object.

(继承自 Control)
ApplyStyleSheetSkin(Page)

将页样式表中定义的样式属性应用于控件。Applies the style properties that are defined in the page style sheet to the control.

(继承自 DataSourceControl)
BeginRenderTracing(TextWriter, Object)

开始输出数据的设计时追踪。Begins design-time tracing of rendering data.

(继承自 Control)
BuildProfileTree(String, Boolean)

收集有关服务器控件的信息并将该信息发送到 Trace 属性,在启用页的跟踪功能时将显示该属性。Gathers information about the server control and delivers it to the Trace property to be displayed when tracing is enabled for the page.

(继承自 Control)
ClearCachedClientID()

将缓存的 ClientID 值设置为 nullSets the cached ClientID value to null.

(继承自 Control)
ClearChildControlState()

删除服务器控件的子控件的控件状态信息。Deletes the control-state information for the server control's child controls.

(继承自 Control)
ClearChildState()

删除服务器控件的所有子控件的视图状态和控件状态信息。Deletes the view-state and control-state information for all the server control's child controls.

(继承自 Control)
ClearChildViewState()

删除服务器控件的所有子控件的视图状态信息。Deletes the view-state information for all the server control's child controls.

(继承自 Control)
ClearEffectiveClientIDMode()

将当前控件实例和任何子控件的 ClientIDMode 属性设置为 InheritSets the ClientIDMode property of the current control instance and of any child controls to Inherit.

(继承自 Control)
CreateChildControls()

由 ASP.NET 页框架调用,以通知服务器控件在准备回发或呈现时使用基于撰写的实现来创建其所包含任何子控件。Called by the ASP.NET page framework to notify server controls that use composition-based implementation to create any child controls they contain in preparation for posting back or rendering.

(继承自 Control)
CreateControlCollection()

创建用于存储子控件的集合。Creates a collection to store child controls.

(继承自 DataSourceControl)
CreateView()

创建与此控件相关联的 EntityDataSourceView 的新实例。Creates a new instance of the EntityDataSourceView that is associated with this control.

DataBind()

将数据源绑定到调用的服务器控件及其所有子控件。Binds a data source to the invoked server control and all its child controls.

(继承自 Control)
DataBind(Boolean)

将数据源绑定到调用的服务器控件及其所有子控件,同时可以选择引发 DataBinding 事件。Binds a data source to the invoked server control and all its child controls with an option to raise the DataBinding event.

(继承自 Control)
DataBindChildren()

将数据源绑定到服务器控件的子控件。Binds a data source to the server control's child controls.

(继承自 Control)
Dispose()

使服务器控件得以在从内存中释放之前执行最后的清理操作。Enables a server control to perform final clean up before it is released from memory.

(继承自 Control)
EndRenderTracing(TextWriter, Object)

结束输出数据的设计时追踪。Ends design-time tracing of rendering data.

(继承自 Control)
EnsureChildControls()

确定服务器控件是否包含子控件。Determines whether the server control contains child controls. 如果不包含,则创建子控件。If it does not, it creates child controls.

(继承自 Control)
EnsureID()

为尚未分配标识符的控件创建标识符。Creates an identifier for controls that do not have an identifier assigned.

(继承自 Control)
Equals(Object)

确定指定的对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(继承自 Object)
FindControl(String)

在当前的命名容器中搜索带指定 id 参数的服务器控件。Searches the current naming container for a server control with the specified id parameter.

(继承自 DataSourceControl)
FindControl(String, Int32)

使用指定的 idpathOffset 参数(该参数有助于搜索)中指定的整数在当前命名容器中搜索服务器控件。Searches the current naming container for a server control with the specified id and an integer, specified in the pathOffset parameter, which aids in the search. 不应重写此版本的 FindControl 方法。You should not override this version of the FindControl method.

(继承自 Control)
Focus()

为控件设置输入焦点。Sets input focus to the control.

(继承自 DataSourceControl)
GetDesignModeState()

获取控件的设计时数据。Gets design-time data for a control.

(继承自 Control)
GetHashCode()

用作默认哈希函数。Serves as the default hash function.

(继承自 Object)
GetRouteUrl(Object)

获取与一组路由参数对应的 URL。Gets the URL that corresponds to a set of route parameters.

(继承自 Control)
GetRouteUrl(RouteValueDictionary)

获取与一组路由参数对应的 URL。Gets the URL that corresponds to a set of route parameters.

(继承自 Control)
GetRouteUrl(String, Object)

获取与一组路由参数以及某个路由名称对应的 URL。Gets the URL that corresponds to a set of route parameters and a route name.

(继承自 Control)
GetRouteUrl(String, RouteValueDictionary)

获取与一组路由参数以及某个路由名称对应的 URL。Gets the URL that corresponds to a set of route parameters and a route name.

(继承自 Control)
GetType()

获取当前实例的 TypeGets the Type of the current instance.

(继承自 Object)
GetUniqueIDRelativeTo(Control)

返回指定控件的 UniqueID 属性的前缀部分。Returns the prefixed portion of the UniqueID property of the specified control.

(继承自 Control)
GetView(String)

获取与数据源控件关联的命名的数据源视图。Gets the named data source view that is associated with the data source control.

GetViewNames()

获取名称的集合,这些名称表示与 EntityDataSource 控件关联的视图对象的列表。Gets a collection of names representing the list of view objects that are associated with the EntityDataSource control.

HasControls()

确定服务器控件是否包含任何子控件。Determines if the server control contains any child controls.

(继承自 DataSourceControl)
HasEvents()

返回一个值,该值指示是否为控件或任何子控件注册事件。Returns a value indicating whether events are registered for the control or any child controls.

(继承自 Control)
IsLiteralContent()

确定服务器控件是否只包含文字内容。Determines if the server control holds only literal content.

(继承自 Control)
LoadControlState(Object)

加载 EntityDataSource 控件中需要保留的属性的状态。Loads the state of the properties in the EntityDataSource control that need to be persisted.

LoadViewState(Object)

从用 SaveViewState() 方法保存的上一个页面请求还原视图状态信息。Restores view-state information from a previous page request that was saved by the SaveViewState() method.

(继承自 Control)
MapPathSecure(String)

检索虚拟路径(绝对的或相对的)映射到的物理路径。Retrieves the physical path that a virtual path, either absolute or relative, maps to.

(继承自 Control)
MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
OnBubbleEvent(Object, EventArgs)

确定服务器控件的事件是否沿页的 UI 服务器控件层次结构向上传递。Determines whether the event for the server control is passed up the page's UI server control hierarchy.

(继承自 Control)
OnDataBinding(EventArgs)

引发 DataBinding 事件。Raises the DataBinding event.

(继承自 Control)
OnInit(EventArgs)

LoadComplete 事件处理程序添加到包含 Page 控件的 EntityDataSource 控件中。Adds a LoadComplete event handler to the Page control that contains the EntityDataSource control.

OnLoad(EventArgs)

引发 Load 事件。Raises the Load event.

(继承自 Control)
OnPreRender(EventArgs)

引发 PreRender 事件。Raises the PreRender event.

(继承自 Control)
OnUnload(EventArgs)

引发 Unload 事件。Raises the Unload event.

OpenFile(String)

获取用于读取文件的 StreamGets a Stream used to read a file.

(继承自 Control)
RaiseBubbleEvent(Object, EventArgs)

将所有事件源及其信息分配给控件的父级。Assigns any sources of the event and its information to the control's parent.

(继承自 Control)
RaiseDataSourceChangedEvent(EventArgs)

引发 DataSourceChanged 事件。Raises the DataSourceChanged event.

(继承自 DataSourceControl)
RemovedControl(Control)

Control 对象的 Controls 集合移除子控件后调用。Called after a child control is removed from the Controls collection of the Control object.

(继承自 Control)
Render(HtmlTextWriter)

将服务器控件内容发送到给定的 HtmlTextWriter 对象,该对象可编写将在客户端呈现的内容。Sends server control content to a provided HtmlTextWriter object, which writes the content to be rendered on the client.

(继承自 Control)
RenderChildren(HtmlTextWriter)

将服务器控件子级的内容输出到提供的 HtmlTextWriter 对象,此对象编写将在客户端呈现的内容。Outputs the content of a server control's children to a provided HtmlTextWriter object, which writes the content to be rendered on the client.

(继承自 Control)
RenderControl(HtmlTextWriter)

将服务器控件内容输出到所提供的 HtmlTextWriter 对象,如果启用了跟踪,则还将存储有关该控件的跟踪信息。Outputs server control content to a provided HtmlTextWriter object and stores tracing information about the control if tracing is enabled.

(继承自 DataSourceControl)
RenderControl(HtmlTextWriter, ControlAdapter)

使用提供的 HtmlTextWriter 对象将服务器控件内容输出到提供的 ControlAdapter 对象。Outputs server control content to a provided HtmlTextWriter object using a provided ControlAdapter object.

(继承自 Control)
ResolveAdapter()

获取负责呈现指定控件的控件适配器。Gets the control adapter responsible for rendering the specified control.

(继承自 Control)
ResolveClientUrl(String)

获取浏览器可以使用的 URL。Gets a URL that can be used by the browser.

(继承自 Control)
ResolveUrl(String)

将 URL 转换为在请求客户端可用的 URL。Converts a URL into one that is usable on the requesting client.

(继承自 Control)
SaveControlState()

保存 EntityDataSource 控件中需要保存的属性状态。Saves the state of the properties in the EntityDataSource control that need to be persisted.

SaveViewState()

保存将页面回发到服务器之后发生的所有服务器控件视图状态更改。Saves any server control view-state changes that have occurred since the time the page was posted back to the server.

(继承自 Control)
SetDesignModeState(IDictionary)

为控件设置设计时数据。Sets design-time data for a control.

(继承自 Control)
SetRenderMethodDelegate(RenderMethod)

分配事件处理程序委托,以将服务器控件及其内容呈现到父控件中。Assigns an event handler delegate to render the server control and its content into its parent control.

(继承自 Control)
SetTraceData(Object, Object)

使用跟踪数据键和跟踪数据值,为呈现数据的设计时追踪设置跟踪数据。Sets trace data for design-time tracing of rendering data, using the trace data key and the trace data value.

(继承自 Control)
SetTraceData(Object, Object, Object)

使用跟踪对象、跟踪数据键和跟踪数据值,为呈现数据的设计时追踪设置跟踪数据。Sets trace data for design-time tracing of rendering data, using the traced object, the trace data key, and the trace data value.

(继承自 Control)
ToString()

返回一个表示当前对象的 string。Returns a string that represents the current object.

(继承自 Object)
TrackViewState()

导致跟踪服务器控件的视图状态的更改,以便这些更改可以存储到服务器控件的 StateBag 对象中。Causes tracking of view-state changes to the server control so they can be stored in the server control's StateBag object. 通过 ViewState 属性可访问此对象。This object is accessible through the ViewState property.

事件

ContextCreated

EntityDataSource 创建完用于处理实体数据对象的 ObjectContext 之后发生。Occurs when the EntityDataSource has finished creating the ObjectContext that is used to work with entity data objects.

ContextCreating

EntityDataSource 创建用于处理实体数据对象的 ObjectContext 时发生。Occurs when the EntityDataSource creates the ObjectContext that is used to work with entity data objects.

ContextDisposing

在释放 ObjectContext 之前发生。Occurs before an ObjectContext is disposed of.

DataBinding

当服务器控件绑定到数据源时发生。Occurs when the server control binds to a data source.

(继承自 Control)
Deleted

在从数据源中删除对象之后发生。Occurs after an object has been deleted from the data source.

Deleting

在从数据源中删除对象之前发生。Occurs before an object is deleted from the data source.

Disposed

当从内存释放服务器控件时发生,这是请求 ASP.NET 页时服务器控件生存期的最后阶段。Occurs when a server control is released from memory, which is the last stage of the server control lifecycle when an ASP.NET page is requested.

(继承自 Control)
Init

当服务器控件初始化时发生;初始化是控件生存期的第一步。Occurs when the server control is initialized, which is the first step in its lifecycle.

(继承自 Control)
Inserted

在数据源中创建新对象之后发生。Occurs after a new object is created at the data source.

Inserting

在将新对象保留到数据源之前发生。Occurs before a new object is persisted to the data source.

Load

当服务器控件加载到 Page 对象中时发生。Occurs when the server control is loaded into the Page object.

(继承自 Control)
PreRender

在加载 Control 对象之后、呈现之前发生。Occurs after the Control object is loaded but prior to rendering.

(继承自 Control)
QueryCreated

出现在 EntityDataSource 创建配置 EntityDataSource 控件过程中指定的 Entity SQL 之后。Occurs after the EntityDataSource creates an Entity SQL query that was specified during the configuration of the EntityDataSource control.

Selected

在执行查询之后发生。Occurs after a query has been executed.

Selecting

在构建并执行查询之前发生。Occurs before a query is constructed and executed.

Unload

当服务器控件从内存中卸载时发生。Occurs when the server control is unloaded from memory.

(继承自 Control)
Updated

在将对象更改保留到数据源之后发生。Occurs after changes to an object have been persisted to the data source.

Updating

在将对象更改保留到数据源之前发生。Occurs before changes to an object are persisted to the data source.

显式界面实现

IControlBuilderAccessor.ControlBuilder

有关此成员的说明,请参见 ControlBuilderFor a description of this member, see ControlBuilder.

(继承自 Control)
IControlDesignerAccessor.GetDesignModeState()

有关此成员的说明,请参见 GetDesignModeState()For a description of this member, see GetDesignModeState().

(继承自 Control)
IControlDesignerAccessor.SetDesignModeState(IDictionary)

有关此成员的说明,请参见 SetDesignModeState(IDictionary)For a description of this member, see SetDesignModeState(IDictionary).

(继承自 Control)
IControlDesignerAccessor.SetOwnerControl(Control)

有关此成员的说明,请参见 SetOwnerControl(Control)For a description of this member, see SetOwnerControl(Control).

(继承自 Control)
IControlDesignerAccessor.UserData

有关此成员的说明,请参见 UserDataFor a description of this member, see UserData.

(继承自 Control)
IDataBindingsAccessor.DataBindings

有关此成员的说明,请参见 DataBindingsFor a description of this member, see DataBindings.

(继承自 Control)
IDataBindingsAccessor.HasDataBindings

有关此成员的说明,请参见 HasDataBindingsFor a description of this member, see HasDataBindings.

(继承自 Control)
IDataSource.DataSourceChanged

当数据源控件以某种影响数据绑定控件的方式发生更改时发生。Occurs when a data source control has changed in a way that affects data-bound controls.

(继承自 DataSourceControl)
IDataSource.GetView(String)

获取与 DataSourceControl 控件关联的指定 DataSourceView 对象。Gets the named DataSourceView object associated with the DataSourceControl control. 有些数据源控件只支持一个视图,有些则支持多个视图。Some data source controls support only one view, while others support more than one.

(继承自 DataSourceControl)
IDataSource.GetViewNames()

获取名称的集合,表示与 DataSourceControl 控件关联的 DataSourceView 对象的列表。Gets a collection of names, representing the list of DataSourceView objects associated with the DataSourceControl control.

(继承自 DataSourceControl)
IDynamicDataSource.Exception

在分部方法中验证失败或引发异常时发生。Occurs when validation fails in a partial methods or when an exception is raised.

IExpressionsAccessor.Expressions

有关此成员的说明,请参见 ExpressionsFor a description of this member, see Expressions.

(继承自 Control)
IExpressionsAccessor.HasExpressions

有关此成员的说明,请参见 HasExpressionsFor a description of this member, see HasExpressions.

(继承自 Control)
IListSource.ContainsListCollection

指示数据源控件是否与一个或多个数据列表相关联。Indicates whether the data source control is associated with one or more lists of data.

(继承自 DataSourceControl)
IListSource.GetList()

获取可用作数据列表的源的数据源控件列表。Gets a list of data source controls that can be used as sources of lists of data.

(继承自 DataSourceControl)
IParserAccessor.AddParsedSubObject(Object)

有关此成员的说明,请参见 AddParsedSubObject(Object)For a description of this member, see AddParsedSubObject(Object).

(继承自 Control)
IQueryableDataSource.RaiseViewChanged()

通知数据绑定控件,告知其参数对象已更改,并且数据绑定控件需要刷新。Notifies the data-bound control that a parameter object has changed and the data-bound control needs to refresh.

扩展方法

ExpandDynamicWhereParameters(IDynamicDataSource)

将动态筛选器扩展到可供数据源使用的 Where 参数中。Expands dynamic filters into Where parameters that are usable by the data source.

FindDataSourceControl(Control)

返回与指定控件的数据控件关联的数据源。Returns the data source that is associated with the data control for the specified control.

FindFieldTemplate(Control, String)

返回指定控件的命名容器中指定列的字段模板。Returns the field template for the specified column in the specified control's naming container.

FindMetaTable(Control)

返回包含数据控件的元表对象。Returns the metatable object for the containing data control.

GetDefaultValues(IDataSource)

为指定数据源获取默认值的集合。Gets the collection of the default values for the specified data source.

GetMetaTable(IDataSource)

获取指定数据源对象中表的元数据。Gets the metadata for a table in the specified data source object.

GetTable(IDynamicDataSource)

返回与指定数据源控件关联的 MetaTable 对象。Returns the MetaTable object that is associated with the specified data source control.

TryGetMetaTable(IDataSource, MetaTable)

确定表元数据是否可用。Determines whether table metadata is available.

适用于

另请参阅