Timer Class

Definition

在定义的时间间隔执行异步或同步网页回发。Performs asynchronous or synchronous Web page postbacks at a defined interval.

public ref class Timer : System::Web::UI::Control, System::Web::UI::IPostBackEventHandler, System::Web::UI::IScriptControl
[System.Drawing.ToolboxBitmap(typeof(EmbeddedResourceFinder), "System.Web.Resources.Timer.bmp")]
public class Timer : System.Web.UI.Control, System.Web.UI.IPostBackEventHandler, System.Web.UI.IScriptControl
type Timer = class
    inherit Control
    interface IPostBackEventHandler
    interface IScriptControl
Public Class Timer
Inherits Control
Implements IPostBackEventHandler, IScriptControl
Inheritance
Timer
Attributes
Implements

Examples

下面的示例演示一个 UpdatePanel 控件,该控件显示随机生成的股票价格和生成股票价格的时间。The following example shows an UpdatePanel control that displays a randomly generated stock price and the time that the stock price was generated. Timer 控件每10秒更新一次 UpdatePanel 控件中的内容。The Timer control updates the content in the UpdatePanel control every 10 seconds.

Note

在此示例中,计时器间隔设置为10秒,以便在运行该示例时,无需等待很长时间即可查看结果。In this example, the timer interval is set to 10 seconds so that when you run the example, you do not have to wait a long time to see the results. 由于每个计时器间隔导致回发导致网络流量,因此在生产应用程序中,应将间隔设置为应用程序仍然可行的最长时间。Because each timer interval causes a postback that causes network traffic, in a production application you should set the interval to the longest time that is still practical for your application.

<%@ Page Language="C#" AutoEventWireup="true" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Timer Example Page</title>
    <script runat="server">
        protected void Page_Load(object sender, EventArgs e)
        {
            OriginalTime.Text = DateTime.Now.ToLongTimeString();
        }

        protected void Timer1_Tick(object sender, EventArgs e)
        {
            StockPrice.Text = GetStockPrice();
            TimeOfPrice.Text = DateTime.Now.ToLongTimeString();
        }

        private string GetStockPrice()
        {
            double randomStockPrice = 50 + new Random().NextDouble();
            return randomStockPrice.ToString("C");
        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server" />
        <asp:Timer ID="Timer1" OnTick="Timer1_Tick" runat="server" Interval="10000" />
      
        <asp:UpdatePanel ID="StockPricePanel" runat="server" UpdateMode="Conditional">
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" />
        </Triggers>
        <ContentTemplate>
            Stock price is <asp:Label id="StockPrice" runat="server"></asp:Label><BR />
            as of <asp:Label id="TimeOfPrice" runat="server"></asp:Label>  
        </ContentTemplate>
        </asp:UpdatePanel>
        <div>
        Page originally created at <asp:Label ID="OriginalTime" runat="server"></asp:Label>
        </div>
    </form>
</body>
</html>
<%@ Page Language="VB" AutoEventWireup="true" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Timer Example Page</title>
    <script runat="server">
        Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
            OriginalTime.Text = DateTime.Now.ToLongTimeString()
        End Sub

        Protected Sub Timer1_Tick(ByVal sender As Object, ByVal e As EventArgs)
            StockPrice.Text = GetStockPrice()
            TimeOfPrice.Text = DateTime.Now.ToLongTimeString()
        End Sub

        Private Function GetStockPrice() As String
            Dim randomStockPrice As Double = 50 + New Random().NextDouble()
            Return randomStockPrice.ToString("C")
        End Function
            
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <asp:ScriptManager ID="ScriptManager1" runat="server" />
        <asp:Timer ID="Timer1" OnTick="Timer1_Tick" runat="server" Interval="10000" />
      
        <asp:UpdatePanel ID="StockPricePanel" runat="server" UpdateMode="Conditional">
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" />
        </Triggers>
        <ContentTemplate>
            Stock price is <asp:Label id="StockPrice" runat="server"></asp:Label><BR />
            as of <asp:Label id="TimeOfPrice" runat="server"></asp:Label>  
        </ContentTemplate>
        </asp:UpdatePanel>
        <div>
        Page originally created at <asp:Label ID="OriginalTime" runat="server"></asp:Label>
        </div>
    </form>
</body>
</html>

Remarks

本主题内容:In this topic:

简介Introduction

使用 Timer 控件,可以按指定的时间间隔执行回发。The Timer control enables you to perform postbacks at a specified interval. 当使用 Timer 控件作为 UpdatePanel 控件的触发器时,UpdatePanel 控件将使用异步的部分页面更新进行更新。When you use the Timer control as a trigger for an UpdatePanel control, the UpdatePanel control is updated by using an asynchronous, partial-page update. 必须在网页中包含一个 ScriptManager 对象,才能使用 Timer 控件。You must include a ScriptManager object in a Web page to use the Timer control.

通过在 UpdatePanel 控件内包含计时器,使用 Timer 控件来更新 UpdatePanel 控件。You use the Timer control to update an UpdatePanel control by including the timer inside the UpdatePanel control. 或者,可以将计时器置于 UpdatePanel 控件外,并将计时器设置为触发器。Alternatively, you can place the timer outside the UpdatePanel control and set the timer as a trigger.

还可以通过在网页中包含 "Timer" 控件,而不是将其设置为 UpdatePanel 控件的触发器,来启动整个网页的完全回发。You can also initiate full postback of a complete Web page by including the Timer control in the Web page and not setting it as a trigger for an UpdatePanel control.

通过为 Tick 事件创建事件处理程序,可以在计时器间隔结束后运行服务器代码。You can run server code when the timer interval has elapsed by creating an event handler for the Tick event. 在事件处理程序中,可以包括用于动态调整 Timer 控件的行为的代码。In the event handler, you can include code that dynamically adjusts the behavior of the Timer control.

设置 Interval 属性以指定发生回发的频率。Set the Interval property to specify how often postbacks will occur. 设置 Enabled 属性以打开或关闭 TimerSet the Enabled property to turn the Timer on or off.

Note

Timer 控件回发到 Web 服务器时的准确性取决于浏览器中运行的 ECMAScript (JavaScript) window.setTimeout 函数的准确性。The accuracy of when the Timer control posts back to the Web server depends on the accuracy of the ECMAScript (JavaScript) window.setTimeout function that is running in the browser.

Interval 属性以毫秒为单位定义。The Interval property is defined in milliseconds. 必须将 Interval 属性设置为一个值,以便在启动下一个回发之前至少完成一个异步回发。You must set the Interval property to a value that lets at least one asynchronous postback complete before the next postback is initiated. Timer 控件位于 UpdatePanel 控件之外时,计时器将继续运行,同时刷新 UpdatePanel 控件的内容。When the Timer control is outside an UpdatePanel control, the timer continues to run while the content of the UpdatePanel control is refreshed. 如果在处理较早的回发时启动了新的回发,则将取消第一个回发。If a new postback is initiated while an earlier postback is being processed, the first postback will be canceled. 默认值为60000毫秒(60秒)。The default value is 60,000 milliseconds (60 seconds).

Note

Interval 属性中添加具有较小值的 Timer 控件可能会产生与 Web 服务器之间的大量通信。Adding a Timer control with a small value in the Interval property can generate significant traffic to and from the Web server. 根据需要,使用 Timer 控件来仅刷新内容。Use the Timer control to refresh the content only as often as necessary.

声明性语法Declarative Syntax

<asp:Timer  
    Enabled="True|False"  
    EnableTheming="True|False"  
    EnableViewState="True|False"  
    ID="string"  
    Interval="integer"  
    OnDataBinding="DataBinding event handler"  
    OnDisposed="Disposed event handler"  
    OnInit="Init event handler"  
    OnLoad="Load event handler"  
    OnPreRender="PreRender event handler"  
    OnTick="Tick event handler"  
    OnUnload="Unload handler"  
    runat="server"  
    SkinID="string"  
    Visible="True|False"  
/>  

Constructors

Timer()

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

Properties

Adapter

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

(Inherited from 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.

(Inherited from Control)
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.

(Inherited from 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.

(Inherited from Control)
ClientID

获取由 ASP.NET 生成的 HTML 标记的控件 ID。Gets the control ID for HTML markup that is generated by ASP.NET.

(Inherited from Control)
ClientIDMode

获取或设置用于生成 ClientID 属性值的算法。Gets or sets the algorithm that is used to generate the value of the ClientID property.

(Inherited from Control)
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.

(Inherited from Control)
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.

(Inherited from 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.

(Inherited from Control)
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.

(Inherited from 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.

(Inherited from Control)
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.

(Inherited from Control)
Enabled

获取或设置一个值,该值指示 Timer 控件在经过 Interval 属性中指定的毫秒数后是否启动到服务器的回发。Gets or sets a value that indicates whether the Timer control initiates a postback to the server after the number of milliseconds specified in the Interval property has elapsed.

EnableTheming

获取或设置一个值,该值指示主题是否应用于该控件。Gets or sets a value indicating whether themes apply to this control.

(Inherited from 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.

(Inherited from Control)
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. 此属性为只读。This property is read-only.

(Inherited from Control)
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.

(Inherited from 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.

(Inherited from Control)
IdSeparator

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

(Inherited from Control)
Interval

获取或设置在启动回发之前需要等待的毫秒数。Gets or sets the number of milliseconds to wait before initiating a postback.

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.

(Inherited from 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.

(Inherited from 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.

(Inherited from 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.

(Inherited from 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.

(Inherited from Control)
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.

(Inherited from 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.

(Inherited from 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.

(Inherited from Control)
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.

(Inherited from Control)
SkinID

获取或设置要应用于控件的外观。Gets or sets the skin to apply to the control.

(Inherited from Control)
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.

(Inherited from 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.

(Inherited from 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.

(Inherited from Control)
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.

(Inherited from 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.

(Inherited from 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.

(Inherited from 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.

(Inherited from Control)
Visible

重写 Visible 类的 Control 属性可以禁止设置此值。Overrides the Visible property of the Control class to prevent this value from being set.

Methods

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.

(Inherited from 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.

(Inherited from Control)
ApplyStyleSheetSkin(Page)

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

(Inherited from Control)
BeginRenderTracing(TextWriter, Object)

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

(Inherited from 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.

(Inherited from Control)
ClearCachedClientID()

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

(Inherited from 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.

(Inherited from 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.

(Inherited from 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.

(Inherited from 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.

(Inherited from 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.

(Inherited from Control)
CreateControlCollection()

创建一个新 ControlCollection 对象来保存服务器控件的子控件(包括文本控件和服务器控件)。Creates a new ControlCollection object to hold the child controls (both literal and server) of the server control.

(Inherited from 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.

(Inherited from 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.

(Inherited from 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.

(Inherited from 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.

(Inherited from Control)
EndRenderTracing(TextWriter, Object)

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

(Inherited from 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.

(Inherited from 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.

(Inherited from 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.

(Inherited from 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.

(Inherited from Control)
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.

(Inherited from Control)
Focus()

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

(Inherited from Control)
GetDesignModeState()

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

(Inherited from Control)
GetHashCode()

作为默认哈希函数。Serves as the default hash function.

(Inherited from 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.

(Inherited from 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.

(Inherited from 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.

(Inherited from 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.

(Inherited from Control)
GetScriptDescriptors()

从传递给在浏览器中实现计时器逻辑的客户端组件的 Timer 对象中检索属性。Retrieves properties from a Timer object that are passed to the client component that implements timer logic in the browser.

GetScriptReferences()

检索 Timer 控件的客户端脚本。Retrieves the client script for the Timer control.

GetType()

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

(Inherited from 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.

(Inherited from 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.

(Inherited from Control)
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.

(Inherited from 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.

(Inherited from Control)
LoadControlState(Object)

SaveControlState() 方法保存的上一个页请求还原控件状态信息。Restores control-state information from a previous page request that was saved by the SaveControlState() method.

(Inherited from Control)
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.

(Inherited from 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.

(Inherited from Control)
MemberwiseClone()

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

(Inherited from 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.

(Inherited from Control)
OnDataBinding(EventArgs)

引发 DataBinding 事件。Raises the DataBinding event.

(Inherited from Control)
OnInit(EventArgs)

引发 Init 事件。Raises the Init event.

(Inherited from Control)
OnLoad(EventArgs)

引发 Load 事件。Raises the Load event.

(Inherited from Control)
OnPreRender(EventArgs)

引发 PreRender 控件的 Timer 事件。Raises the PreRender event of the Timer control.

OnTick(EventArgs)

引发 Tick 控件的 Timer 事件。Raises the Tick event of the Timer control.

OnUnload(EventArgs)

引发 Unload 事件。Raises the Unload event.

(Inherited from Control)
OpenFile(String)

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

(Inherited from 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.

(Inherited from Control)
RaisePostBackEvent(String)

启用 Timer 控件可在将页发送到服务器时引发 Tick 事件。Enables a Timer control to raise the Tick event when a page is posted to the server.

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.

(Inherited from Control)
Render(HtmlTextWriter)

使用指定的 Timer 对象将 HtmlTextWriter 控件内容呈现给浏览器。Renders the Timer control content to the browser by using the specified HtmlTextWriter object.

RenderChildren(HtmlTextWriter)

将服务器控件子级的内容输出到提供的 HtmlTextWriter 对象,该对象可写入要在客户端上呈现的内容。Outputs the content of a server control's children to a provided HtmlTextWriter object, which writes the content to be rendered on the client.

(Inherited from 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.

(Inherited from Control)
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.

(Inherited from 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.

(Inherited from Control)
ResolveClientUrl(String)

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

(Inherited from 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.

(Inherited from Control)
SaveControlState()

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

(Inherited from Control)
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.

(Inherited from Control)
SetDesignModeState(IDictionary)

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

(Inherited from 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.

(Inherited from 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.

(Inherited from 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.

(Inherited from Control)
ToString()

返回表示当前对象的字符串。Returns a string that represents the current object.

(Inherited from 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.

(Inherited from Control)

Events

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.

(Inherited from Control)
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.

(Inherited from 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.

(Inherited from Control)
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.

(Inherited from 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.

(Inherited from Control)
Tick

在经过 Interval 属性中指定的毫秒数并向服务器发送页时发生。Occurs when the number of milliseconds specified in the Interval property has elapsed and the page is posted to the server.

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.

(Inherited from Control)

Explicit Interface Implementations

IControlBuilderAccessor.ControlBuilder

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

(Inherited from Control)
IControlDesignerAccessor.GetDesignModeState()

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

(Inherited from 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).

(Inherited from 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).

(Inherited from Control)
IControlDesignerAccessor.UserData

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

(Inherited from Control)
IDataBindingsAccessor.DataBindings

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

(Inherited from Control)
IDataBindingsAccessor.HasDataBindings

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

(Inherited from Control)
IExpressionsAccessor.Expressions

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

(Inherited from Control)
IExpressionsAccessor.HasExpressions

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

(Inherited from Control)
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).

(Inherited from Control)
IPostBackEventHandler.RaisePostBackEvent(String)

在将页发送到服务器时引发 Tick 事件。Raises the Tick event when a page is posted to the server.

IScriptControl.GetScriptDescriptors()

从传递给客户端组件的 Timer 对象中检索属性。Retrieves properties from a Timer object that are passed to the client component.

IScriptControl.GetScriptReferences()

检索 Timer 控件的客户端脚本。Retrieves the client script for the Timer control.

Extension Methods

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.

Applies to