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CheckBox Class

 
System_CAPS_noteNote

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Displays a check box that allows the user to select a true or false condition.

Namespace:   System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

System.Object
  System.Web.UI.Control
    System.Web.UI.WebControls.WebControl
      System.Web.UI.WebControls.CheckBox
        System.Web.UI.WebControls.RadioButton

<ControlValuePropertyAttribute("Checked")>
Public Class CheckBox
	Inherits WebControl
	Implements IPostBackDataHandler, ICheckBoxControl
Name Description
System_CAPS_pubmethod CheckBox()

Initializes a new instance of the CheckBox class.

Name Description
System_CAPS_pubproperty AccessKey

Gets or sets the access key that allows you to quickly navigate to the Web server control.(Inherited from WebControl.)

System_CAPS_protproperty Adapter

Gets the browser-specific adapter for the control.(Inherited from Control.)

System_CAPS_pubproperty AppRelativeTemplateSourceDirectory

Gets or sets the application-relative virtual directory of the Page or UserControl object that contains this control.(Inherited from Control.)

System_CAPS_pubproperty Attributes

Gets the collection of arbitrary attributes (for rendering only) that do not correspond to properties on the control.(Inherited from WebControl.)

System_CAPS_pubproperty AutoPostBack

Gets or sets a value indicating whether the CheckBox state automatically posts back to the server when clicked.

System_CAPS_pubproperty BackColor

Gets or sets the background color of the Web server control.(Inherited from WebControl.)

System_CAPS_pubproperty BindingContainer

This API supports the product infrastructure and is not intended to be used directly from your code. Gets the control that contains this control's data binding.(Inherited from Control.)

System_CAPS_pubproperty BorderColor

Gets or sets the border color of the Web control.(Inherited from WebControl.)

System_CAPS_pubproperty BorderStyle

Gets or sets the border style of the Web server control.(Inherited from WebControl.)

System_CAPS_pubproperty BorderWidth

Gets or sets the border width of the Web server control.(Inherited from WebControl.)

System_CAPS_pubproperty CausesValidation

Gets or sets a value indicating whether validation is performed when the CheckBox control is selected.

System_CAPS_pubproperty Checked

Gets or sets a value indicating whether the CheckBox control is checked.

System_CAPS_protproperty ChildControlsCreated

Gets a value that indicates whether the server control's child controls have been created.(Inherited from Control.)

System_CAPS_pubproperty ClientID

Gets the control ID for HTML markup that is generated by ASP.NET.(Inherited from Control.)

System_CAPS_pubproperty ClientIDMode

Gets or sets the algorithm that is used to generate the value of the ClientID property.(Inherited from Control.)

System_CAPS_protproperty ClientIDSeparator

Gets a character value representing the separator character used in the ClientID property.(Inherited from Control.)

System_CAPS_protproperty Context

Gets the HttpContext object associated with the server control for the current Web request.(Inherited from Control.)

System_CAPS_pubproperty Controls

Gets a ControlCollection object that represents the child controls for a specified server control in the UI hierarchy.(Inherited from Control.)

System_CAPS_pubproperty ControlStyle

Gets the style of the Web server control. This property is used primarily by control developers.(Inherited from WebControl.)

System_CAPS_pubproperty ControlStyleCreated

Gets a value indicating whether a Style object has been created for the ControlStyle property. This property is primarily used by control developers.(Inherited from WebControl.)

System_CAPS_pubproperty CssClass

Gets or sets the Cascading Style Sheet (CSS) class rendered by the Web server control on the client.(Inherited from WebControl.)

System_CAPS_pubproperty DataItemContainer

Gets a reference to the naming container if the naming container implements IDataItemContainer.(Inherited from Control.)

System_CAPS_pubproperty DataKeysContainer

Gets a reference to the naming container if the naming container implements IDataKeysControl.(Inherited from Control.)

System_CAPS_protproperty DesignMode

Gets a value indicating whether a control is being used on a design surface.(Inherited from Control.)

System_CAPS_pubproperty Enabled

Gets or sets a value indicating whether the Web server control is enabled.(Inherited from WebControl.)

System_CAPS_pubproperty EnableTheming

Gets or sets a value indicating whether themes apply to this control.(Inherited from WebControl.)

System_CAPS_pubproperty EnableViewState

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.)

System_CAPS_protproperty Events

Gets a list of event handler delegates for the control. This property is read-only.(Inherited from Control.)

System_CAPS_pubproperty Font

Gets the font properties associated with the Web server control.(Inherited from WebControl.)

System_CAPS_pubproperty ForeColor

Gets or sets the foreground color (typically the color of the text) of the Web server control.(Inherited from WebControl.)

System_CAPS_pubproperty HasAttributes

Gets a value indicating whether the control has attributes set.(Inherited from WebControl.)

System_CAPS_protproperty HasChildViewState

Gets a value indicating whether the current server control's child controls have any saved view-state settings.(Inherited from Control.)

System_CAPS_pubproperty Height

Gets or sets the height of the Web server control.(Inherited from WebControl.)

System_CAPS_pubproperty ID

Gets or sets the programmatic identifier assigned to the server control.(Inherited from Control.)

System_CAPS_protproperty IdSeparator

This API supports the product infrastructure and is not intended to be used directly from your code. Gets the character used to separate control identifiers.(Inherited from Control.)

System_CAPS_pubproperty InputAttributes

Gets a reference to the collection of attributes for the rendered input element of the CheckBox control.

System_CAPS_protproperty IsChildControlStateCleared

Gets a value indicating whether controls contained within this control have control state.(Inherited from Control.)

System_CAPS_protproperty IsEnabled

Gets a value indicating whether the control is enabled.(Inherited from WebControl.)

System_CAPS_protproperty IsTrackingViewState

Gets a value that indicates whether the server control is saving changes to its view state.(Inherited from Control.)

System_CAPS_protproperty IsViewStateEnabled

Gets a value indicating whether view state is enabled for this control.(Inherited from Control.)

System_CAPS_pubproperty LabelAttributes

Gets a reference to the collection of attributes for the rendered LABEL element of the CheckBox control.

System_CAPS_protproperty LoadViewStateByID

Gets a value indicating whether the control participates in loading its view state by ID instead of index. (Inherited from Control.)

System_CAPS_pubproperty NamingContainer

Gets a reference to the server control's naming container, which creates a unique namespace for differentiating between server controls with the same Control.ID property value.(Inherited from Control.)

System_CAPS_pubproperty Page

Gets a reference to the Page instance that contains the server control.(Inherited from Control.)

System_CAPS_pubproperty Parent

Gets a reference to the server control's parent control in the page control hierarchy.(Inherited from Control.)

System_CAPS_pubproperty RenderingCompatibility

Gets a value that specifies the ASP.NET version that rendered HTML will be compatible with.(Inherited from Control.)

System_CAPS_pubproperty Site

Gets information about the container that hosts the current control when rendered on a design surface.(Inherited from Control.)

System_CAPS_pubproperty SkinID

Gets or sets the skin to apply to the control.(Inherited from WebControl.)

System_CAPS_pubproperty Style

Gets a collection of text attributes that will be rendered as a style attribute on the outer tag of the Web server control.(Inherited from WebControl.)

System_CAPS_pubproperty SupportsDisabledAttribute

Gets a value that indicates whether the control should set the disabled attribute of the rendered HTML element to "disabled" when the control's IsEnabled property is false.(Inherited from WebControl.)

System_CAPS_pubproperty TabIndex

Gets or sets the tab index of the Web server control.(Inherited from WebControl.)

System_CAPS_protproperty TagKey

Gets the HtmlTextWriterTag value that corresponds to this Web server control. This property is used primarily by control developers.(Inherited from WebControl.)

System_CAPS_protproperty TagName

Gets the name of the control tag. This property is used primarily by control developers.(Inherited from WebControl.)

System_CAPS_pubproperty TemplateControl

Gets or sets a reference to the template that contains this control. (Inherited from Control.)

System_CAPS_pubproperty TemplateSourceDirectory

Gets the virtual directory of the Page or UserControl that contains the current server control.(Inherited from Control.)

System_CAPS_pubproperty Text

Gets or sets the text label associated with the CheckBox.

System_CAPS_pubproperty TextAlign

Gets or sets the alignment of the text label associated with the CheckBox control.

System_CAPS_pubproperty ToolTip

Gets or sets the text displayed when the mouse pointer hovers over the Web server control.(Inherited from WebControl.)

System_CAPS_pubproperty UniqueID

Gets the unique, hierarchically qualified identifier for the server control.(Inherited from Control.)

System_CAPS_pubproperty ValidateRequestMode

Gets or sets a value that indicates whether the control checks client input from the browser for potentially dangerous values.(Inherited from Control.)

System_CAPS_pubproperty ValidationGroup

Gets or sets the group of controls for which the CheckBox control causes validation when it posts back to the server.

System_CAPS_protproperty ViewState

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.)

System_CAPS_protproperty ViewStateIgnoresCase

Gets a value that indicates whether the StateBag object is case-insensitive.(Inherited from Control.)

System_CAPS_pubproperty ViewStateMode

Gets or sets the view-state mode of this control.(Inherited from Control.)

System_CAPS_pubproperty Visible

Gets or sets a value that indicates whether a server control is rendered as UI on the page.(Inherited from Control.)

System_CAPS_pubproperty Width

Gets or sets the width of the Web server control.(Inherited from WebControl.)

Name Description
System_CAPS_protmethod AddAttributesToRender(HtmlTextWriter)

Adds the HTML attributes and styles of a CheckBox control to be rendered to the specified output stream.(Overrides WebControl.AddAttributesToRender(HtmlTextWriter).)

System_CAPS_protmethod AddedControl(Control, Int32)

Called after a child control is added to the Controls collection of the Control object.(Inherited from Control.)

System_CAPS_protmethod AddParsedSubObject(Object)

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.)

System_CAPS_pubmethod ApplyStyle(Style)

Copies any nonblank elements of the specified style to the Web control, overwriting any existing style elements of the control. This method is primarily used by control developers.(Inherited from WebControl.)

System_CAPS_pubmethod ApplyStyleSheetSkin(Page)

Applies the style properties defined in the page style sheet to the control.(Inherited from Control.)

System_CAPS_protmethod BeginRenderTracing(TextWriter, Object)

Begins design-time tracing of rendering data.(Inherited from Control.)

System_CAPS_protmethod BuildProfileTree(String, Boolean)

This API supports the product infrastructure and is not intended to be used directly from your code. 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.)

System_CAPS_protmethod ClearCachedClientID()

This API supports the product infrastructure and is not intended to be used directly from your code. Sets the cached ClientID value to null.(Inherited from Control.)

System_CAPS_protmethod ClearChildControlState()

Deletes the control-state information for the server control's child controls. (Inherited from Control.)

System_CAPS_protmethod ClearChildState()

Deletes the view-state and control-state information for all the server control's child controls.(Inherited from Control.)

System_CAPS_protmethod ClearChildViewState()

Deletes the view-state information for all the server control's child controls.(Inherited from Control.)

System_CAPS_protmethod ClearEffectiveClientIDMode()

This API supports the product infrastructure and is not intended to be used directly from your code. Sets the ClientIDMode property of the current control instance and of any child controls to Inherit.(Inherited from Control.)

System_CAPS_pubmethod CopyBaseAttributes(WebControl)

Copies the properties not encapsulated by the Style object from the specified Web server control to the Web server control that this method is called from. This method is used primarily by control developers.(Inherited from WebControl.)

System_CAPS_protmethod CreateChildControls()

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.)

System_CAPS_protmethod CreateControlCollection()

Creates a new ControlCollection object to hold the child controls (both literal and server) of the server control.(Inherited from Control.)

System_CAPS_protmethod CreateControlStyle()

Creates the style object that is used internally by the WebControl class to implement all style related properties. This method is used primarily by control developers.(Inherited from WebControl.)

System_CAPS_pubmethod DataBind()

Binds a data source to the invoked server control and all its child controls.(Inherited from Control.)

System_CAPS_protmethod DataBind(Boolean)

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.)

System_CAPS_protmethod DataBindChildren()

Binds a data source to the server control's child controls.(Inherited from Control.)

System_CAPS_pubmethod Dispose()

Enables a server control to perform final clean up before it is released from memory.(Inherited from Control.)

System_CAPS_protmethod EndRenderTracing(TextWriter, Object)

Ends design-time tracing of rendering data.(Inherited from Control.)

System_CAPS_protmethod EnsureChildControls()

Determines whether the server control contains child controls. If it does not, it creates child controls.(Inherited from Control.)

System_CAPS_protmethod EnsureID()

Creates an identifier for controls that do not have an identifier assigned.(Inherited from Control.)

System_CAPS_pubmethod Equals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethod Finalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethod FindControl(String)

Searches the current naming container for a server control with the specified id parameter.(Inherited from Control.)

System_CAPS_protmethod FindControl(String, Int32)

This API supports the product infrastructure and is not intended to be used directly from your code. 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. You should not override this version of the FindControl method.(Inherited from Control.)

System_CAPS_pubmethod Focus()

Sets input focus to a control.(Inherited from Control.)

System_CAPS_protmethod GetDesignModeState()

This API supports the product infrastructure and is not intended to be used directly from your code. Gets design-time data for a control.(Inherited from Control.)

System_CAPS_pubmethod GetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethod GetRouteUrl(Object)

Gets the URL that corresponds to a set of route parameters.(Inherited from Control.)

System_CAPS_pubmethod GetRouteUrl(RouteValueDictionary)

Gets the URL that corresponds to a set of route parameters.(Inherited from Control.)

System_CAPS_pubmethod GetRouteUrl(String, Object)

Gets the URL that corresponds to a set of route parameters and a route name.(Inherited from Control.)

System_CAPS_pubmethod GetRouteUrl(String, RouteValueDictionary)

Gets the URL that corresponds to a set of route parameters and a route name.(Inherited from Control.)

System_CAPS_pubmethod GetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethod GetUniqueIDRelativeTo(Control)

Returns the prefixed portion of the UniqueID property of the specified control.(Inherited from Control.)

System_CAPS_pubmethod HasControls()

Determines if the server control contains any child controls.(Inherited from Control.)

System_CAPS_protmethod HasEvents()

Returns a value indicating whether events are registered for the control or any child controls.(Inherited from Control.)

System_CAPS_protmethod IsLiteralContent()

This API supports the product infrastructure and is not intended to be used directly from your code. Determines if the server control holds only literal content.(Inherited from Control.)

System_CAPS_protmethod LoadControlState(Object)

Restores control-state information from a previous page request that was saved by the SaveControlState method.(Inherited from Control.)

System_CAPS_protmethod LoadPostData(String, NameValueCollection)

Processes the postback data for the CheckBox control.

System_CAPS_protmethod LoadViewState(Object)

Loads the previously saved view state of the CheckBox control.(Overrides WebControl.LoadViewState(Object).)

System_CAPS_protmethod MapPathSecure(String)

Retrieves the physical path that a virtual path, either absolute or relative, maps to.(Inherited from Control.)

System_CAPS_protmethod MemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethod MergeStyle(Style)

Copies any nonblank elements of the specified style to the Web control, but will not overwrite any existing style elements of the control. This method is used primarily by control developers.(Inherited from WebControl.)

System_CAPS_protmethod OnBubbleEvent(Object, EventArgs)

Determines whether the event for the server control is passed up the page's UI server control hierarchy.(Inherited from Control.)

System_CAPS_protmethod OnCheckedChanged(EventArgs)

Raises the CheckedChanged event of the CheckBox control. This allows you to handle the event directly.

System_CAPS_protmethod OnDataBinding(EventArgs)

Raises the DataBinding event.(Inherited from Control.)

System_CAPS_protmethod OnInit(EventArgs)

Raises the Init event.(Inherited from Control.)

System_CAPS_protmethod OnLoad(EventArgs)

Raises the Load event.(Inherited from Control.)

System_CAPS_protmethod OnPreRender(EventArgs)

This API supports the product infrastructure and is not intended to be used directly from your code. Registers client script for generating postback prior to rendering on the client if AutoPostBack is true.(Overrides Control.OnPreRender(EventArgs).)

System_CAPS_protmethod OnUnload(EventArgs)

Raises the Unload event.(Inherited from Control.)

System_CAPS_protmethod OpenFile(String)

Gets a Stream used to read a file.(Inherited from Control.)

System_CAPS_protmethod RaiseBubbleEvent(Object, EventArgs)

Assigns any sources of the event and its information to the control's parent.(Inherited from Control.)

System_CAPS_protmethod RaisePostDataChangedEvent()

Invokes the OnCheckedChanged method when the posted data for the CheckBox control has changed.

System_CAPS_protmethod RemovedControl(Control)

Called after a child control is removed from the Controls collection of the Control object.(Inherited from Control.)

System_CAPS_protmethod Render(HtmlTextWriter)

This API supports the product infrastructure and is not intended to be used directly from your code. Displays the CheckBox on the client.(Overrides WebControl.Render(HtmlTextWriter).)

System_CAPS_pubmethod RenderBeginTag(HtmlTextWriter)

Renders the HTML opening tag of the control to the specified writer. This method is used primarily by control developers.(Inherited from WebControl.)

System_CAPS_protmethod RenderChildren(HtmlTextWriter)

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.)

System_CAPS_protmethod RenderContents(HtmlTextWriter)

Renders the contents of the control to the specified writer. This method is used primarily by control developers.(Inherited from WebControl.)

System_CAPS_pubmethod RenderControl(HtmlTextWriter)

Outputs server control content to a provided HtmlTextWriter object and stores tracing information about the control if tracing is enabled.(Inherited from Control.)

System_CAPS_protmethod RenderControl(HtmlTextWriter, ControlAdapter)

Outputs server control content to a provided HtmlTextWriter object using a provided ControlAdapter object.(Inherited from Control.)

System_CAPS_pubmethod RenderEndTag(HtmlTextWriter)

Renders the HTML closing tag of the control into the specified writer. This method is used primarily by control developers.(Inherited from WebControl.)

System_CAPS_protmethod ResolveAdapter()

Gets the control adapter responsible for rendering the specified control.(Inherited from Control.)

System_CAPS_pubmethod ResolveClientUrl(String)

Gets a URL that can be used by the browser.(Inherited from Control.)

System_CAPS_pubmethod ResolveUrl(String)

Converts a URL into one that is usable on the requesting client.(Inherited from Control.)

System_CAPS_protmethod SaveControlState()

Saves any server control state changes that have occurred since the time the page was posted back to the server.(Inherited from Control.)

System_CAPS_protmethod SaveViewState()

Saves the changes to the CheckBox view state since the time the page was posted back to the server.(Overrides WebControl.SaveViewState().)

System_CAPS_protmethod SetDesignModeState(IDictionary)

Sets design-time data for a control.(Inherited from Control.)

System_CAPS_pubmethod SetRenderMethodDelegate(RenderMethod)

This API supports the product infrastructure and is not intended to be used directly from your code. Assigns an event handler delegate to render the server control and its content into its parent control.(Inherited from Control.)

System_CAPS_pubmethod SetTraceData(Object, Object)

Sets trace data for design-time tracing of rendering data, using the trace data key and the trace data value.(Inherited from Control.)

System_CAPS_pubmethod SetTraceData(Object, Object, Object)

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.)

System_CAPS_pubmethod ToString()

Returns a string that represents the current object.(Inherited from Object.)

System_CAPS_protmethod TrackViewState()

Tracks view-state changes to the CheckBox control so that they can be stored in the control's StateBag object. This object is accessible through the ViewState property. (Overrides WebControl.TrackViewState().)

Name Description
System_CAPS_pubevent CheckedChanged

Occurs when the value of the Checked property changes between posts to the server.

System_CAPS_pubevent DataBinding

Occurs when the server control binds to a data source.(Inherited from Control.)

System_CAPS_pubevent Disposed

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.)

System_CAPS_pubevent Init

Occurs when the server control is initialized, which is the first step in its lifecycle.(Inherited from Control.)

System_CAPS_pubevent Load

Occurs when the server control is loaded into the Page object.(Inherited from Control.)

System_CAPS_pubevent PreRender

Occurs after the Control object is loaded but prior to rendering.(Inherited from Control.)

System_CAPS_pubevent Unload

Occurs when the server control is unloaded from memory.(Inherited from Control.)

Name Description
System_CAPS_pubinterface System_CAPS_privmethod IAttributeAccessor.GetAttribute(String)

This API supports the product infrastructure and is not intended to be used directly from your code. Gets an attribute of the Web control with the specified name.(Inherited from WebControl.)

System_CAPS_pubinterface System_CAPS_privmethod IAttributeAccessor.SetAttribute(String, String)

Sets an attribute of the Web control to the specified name and value.(Inherited from WebControl.)

System_CAPS_pubinterface System_CAPS_privmethod IControlDesignerAccessor.GetDesignModeState()

For a description of this member, see IControlDesignerAccessor.GetDesignModeState.(Inherited from Control.)

System_CAPS_pubinterface System_CAPS_privmethod IControlDesignerAccessor.SetDesignModeState(IDictionary)

For a description of this member, see IControlDesignerAccessor.SetDesignModeState. (Inherited from Control.)

System_CAPS_pubinterface System_CAPS_privmethod IControlDesignerAccessor.SetOwnerControl(Control)

This API supports the product infrastructure and is not intended to be used directly from your code. For a description of this member, see IControlDesignerAccessor.SetOwnerControl. (Inherited from Control.)

System_CAPS_pubinterface System_CAPS_privmethod IParserAccessor.AddParsedSubObject(Object)

For a description of this member, see IParserAccessor.AddParsedSubObject. (Inherited from Control.)

System_CAPS_pubinterface System_CAPS_privmethod IPostBackDataHandler.LoadPostData(String, NameValueCollection)

This API supports the product infrastructure and is not intended to be used directly from your code. Processes posted data for the CheckBox control.

System_CAPS_pubinterface System_CAPS_privmethod IPostBackDataHandler.RaisePostDataChangedEvent()

This API supports the product infrastructure and is not intended to be used directly from your code. Raises when posted data for a control has changed.

System_CAPS_pubinterface System_CAPS_privproperty IControlBuilderAccessor.ControlBuilder

For a description of this member, see IControlBuilderAccessor.ControlBuilder. (Inherited from Control.)

System_CAPS_pubinterface System_CAPS_privproperty IControlDesignerAccessor.UserData

For a description of this member, see IControlDesignerAccessor.UserData. (Inherited from Control.)

System_CAPS_pubinterface System_CAPS_privproperty IDataBindingsAccessor.DataBindings

For a description of this member, see IDataBindingsAccessor.DataBindings. (Inherited from Control.)

System_CAPS_pubinterface System_CAPS_privproperty IDataBindingsAccessor.HasDataBindings

For a description of this member, see IDataBindingsAccessor.HasDataBindings. (Inherited from Control.)

System_CAPS_pubinterface System_CAPS_privproperty IExpressionsAccessor.Expressions

For a description of this member, see IExpressionsAccessor.Expressions. (Inherited from Control.)

System_CAPS_pubinterface System_CAPS_privproperty IExpressionsAccessor.HasExpressions

For a description of this member, see IExpressionsAccessor.HasExpressions. (Inherited from Control.)

Name Description
System_CAPS_pubmethod FindDataSourceControl()

Returns the data source that is associated with the data control for the specified control.(Defined by DynamicDataExtensions.)

System_CAPS_pubmethod FindFieldTemplate(String)

Returns the field template for the specified column in the specified control's naming container.(Defined by DynamicDataExtensions.)

System_CAPS_pubmethod FindMetaTable()

Returns the metatable object for the containing data control.(Defined by DynamicDataExtensions.)

Use the CheckBox control to allow the user to select a true or false state.

If you plan to use multiple CheckBox controls, the CheckBoxList control is an alternative control that provides convenient data binding capabilities. However, individual CheckBox controls provide greater control over layout.

System_CAPS_security Security Note

A CheckBox control accepts user input, which is a potential security threat. By default, ASP.NET mobile Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview.

<asp:CheckBox
    AccessKey="string"
    AutoPostBack="True|False"
    BackColor="color name|#dddddd"
    BorderColor="color name|#dddddd"
    BorderStyle="NotSet|None|Dotted|Dashed|Solid|Double|Groove|Ridge|
        Inset|Outset"
    BorderWidth="size"
    CausesValidation="True|False"
    Checked="True|False"
    CssClass="string"
    Enabled="True|False"
    EnableTheming="True|False"
    EnableViewState="True|False"
    Font-Bold="True|False"
    Font-Italic="True|False"
    Font-Names="string"
    Font-Overline="True|False"
    Font-Size="string|Smaller|Larger|XX-Small|X-Small|Small|Medium|
        Large|X-Large|XX-Large"
    Font-Strikeout="True|False"
    Font-Underline="True|False"
    ForeColor="color name|#dddddd"
    Height="size"
    ID="string"
    OnCheckedChanged="CheckedChanged event handler"
    OnDataBinding="DataBinding event handler"
    OnDisposed="Disposed event handler"
    OnInit="Init event handler"
    OnLoad="Load event handler"
    OnPreRender="PreRender event handler"
    OnUnload="Unload event handler"
    runat="server"
    SkinID="string"
    Style="string"
    TabIndex="integer"
    Text="string"
    TextAlign="Left|Right"
    ToolTip="string"
    ValidationGroup="string"
    Visible="True|False"
    Width="size"
/>

The following example demonstrates how to use a CheckBox control to indicate whether tax is included in the calculation for a sales total.

System_CAPS_note Note

The following code sample uses the single-file code model and may not work correctly if copied directly into a code-behind file. This code sample must be copied into an empty text file that has an .aspx extension. For more information on the Web Forms code model, see ASP.NET Web Forms Page Code Model.


<%@ 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>CheckBox CheckedChanged Example</title>
<script runat="server">

      Sub Check_Clicked(sender As Object, e As EventArgs) 

         ' Calculate the subtotal and display the result in currency format.
         ' Include tax if the check box is selected.
         Message.Text = CalculateTotal(checkbox1.Checked).ToString("c")

      End Sub

      Sub Page_Load(sender As Object, e As EventArgs)

         ' Display the subtotal without tax when the page is first loaded.
         If Not IsPostBack Then

            ' Calculate the subtotal and display the result in currency format.
            Message.Text = CalculateTotal(false).ToString("c")

         End If

      End Sub

      Function CalculateTotal(Taxable As Boolean) As Double 

         ' Calculate the subtotal for the example.
         Dim Result As Double = 1.99 + 2.99 + 3.99

         ' Add tax, if applicable.
         If(Taxable)

            Result += Result * 0.086

         End If

         Return Result 

      End Function

   </script>

</head>

<body>

   <form id="form1" runat="server">

      <h3>CheckBox CheckedChanged Example</h3>

      Select whether to include tax in the subtotal.

      <br /><br />

      <table border="1" cellpadding="5">

         <tr>

            <th colspan="2">

               Shopping cart

            </th>

         </tr>

         <tr>

            <td>

               Item 1

            </td>

            <td>

               $1.99

            </td>

         </tr>

         <tr>

            <td>

               Item 2

            </td>

            <td>

               $2.99

            </td>

         </tr>

         <tr>

            <td>

               Item 3

            </td>

            <td>

               $3.99

            </td>

         </tr>

         <tr>

            <td>

               <b>Subtotal</b>

            </td>

            <td>

               <asp:Label id="Message" runat="server"/>

            </td>

         </tr>

         <tr>

            <td colspan="2">

               <asp:CheckBox id="checkbox1" runat="server"
                    AutoPostBack="True"
                    Text="Include 8.6% sales tax"
                    TextAlign="Right"
                    OnCheckedChanged="Check_Clicked"/>

            </td>

         </tr>

      </table>

   </form>

</body>

</html>

.NET Framework
Available since 1.1

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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