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ImageButton Class

A control that displays an image and responds to mouse clicks on the image.

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

public class ImageButton : Image, 
	IPostBackDataHandler, IPostBackEventHandler, IButtonControl
<asp:ImageButton />

The ImageButton type exposes the following members.

  NameDescription
Public methodImageButtonInitializes a new instance of the ImageButton class.
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  NameDescription
Public propertyAccessKeyGets or sets the access key that allows you to quickly navigate to the Web server control. (Inherited from WebControl.)
Protected propertyAdapterGets the browser-specific adapter for the control. (Inherited from Control.)
Public propertyAlternateTextGets or sets the alternate text displayed in the Image control when the image is unavailable. Browsers that support the ToolTips feature display this text as a ToolTip. (Inherited from Image.)
Public propertyAppRelativeTemplateSourceDirectoryGets or sets the application-relative virtual directory of the Page or UserControl object that contains this control. (Inherited from Control.)
Public propertyAttributesGets the collection of arbitrary attributes (for rendering only) that do not correspond to properties on the control. (Inherited from WebControl.)
Public propertyBackColorGets or sets the background color of the Web server control. (Inherited from WebControl.)
Public propertyBindingContainerInfrastructure. Gets the control that contains this control's data binding. (Inherited from Control.)
Public propertyBorderColorGets or sets the border color of the Web control. (Inherited from WebControl.)
Public propertyBorderStyleGets or sets the border style of the Web server control. (Inherited from WebControl.)
Public propertyBorderWidthGets or sets the border width of the Web server control. (Inherited from WebControl.)
Public propertyCausesValidationGets or sets a value indicating whether validation is performed when the ImageButton control is clicked.
Protected propertyChildControlsCreatedGets a value that indicates whether the server control's child controls have been created. (Inherited from Control.)
Public propertyClientIDGets the control ID for HTML markup that is generated by ASP.NET. (Inherited from Control.)
Public propertyClientIDModeGets or sets the algorithm that is used to generate the value of the ClientID property. (Inherited from Control.)
Protected propertyClientIDSeparatorGets a character value representing the separator character used in the ClientID property. (Inherited from Control.)
Public propertyCommandArgumentGets or sets an optional argument that provides additional information about the CommandName property.
Public propertyCommandNameGets or sets the command name associated with the ImageButton control.
Protected propertyContextGets the HttpContext object associated with the server control for the current Web request. (Inherited from Control.)
Public propertyControlsGets a ControlCollection object that represents the child controls for a specified server control in the UI hierarchy. (Inherited from Control.)
Public propertyControlStyleGets the style of the Web server control. This property is used primarily by control developers. (Inherited from WebControl.)
Public propertyControlStyleCreatedGets 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.)
Public propertyCssClassGets or sets the Cascading Style Sheet (CSS) class rendered by the Web server control on the client. (Inherited from WebControl.)
Public propertyDataItemContainerGets a reference to the naming container if the naming container implements IDataItemContainer. (Inherited from Control.)
Public propertyDataKeysContainerGets a reference to the naming container if the naming container implements IDataKeysControl. (Inherited from Control.)
Public propertyDescriptionUrlGets or sets the location to a detailed description for the image. (Inherited from Image.)
Protected propertyDesignModeGets a value indicating whether a control is being used on a design surface. (Inherited from Control.)
Public propertyEnabledGets or sets a value indicating whether the ImageButton can be clicked to perform a post back to the server. (Overrides Image.Enabled.)
Public propertyEnableThemingGets or sets a value indicating whether themes apply to this control. (Inherited from WebControl.)
Public propertyEnableViewStateGets 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.)
Protected propertyEventsGets a list of event handler delegates for the control. This property is read-only. (Inherited from Control.)
Public propertyFontGets the font properties for the text associated with the control. (Inherited from Image.)
Public propertyForeColorGets or sets the foreground color (typically the color of the text) of the Web server control. (Inherited from WebControl.)
Public propertyGenerateEmptyAlternateTextGets or sets a value indicating whether the control generates an alternate-text attribute for an empty string value. (Overrides Image.GenerateEmptyAlternateText.)
Public propertyHasAttributesGets a value indicating whether the control has attributes set. (Inherited from WebControl.)
Protected propertyHasChildViewStateGets a value indicating whether the current server control's child controls have any saved view-state settings. (Inherited from Control.)
Public propertyHeightGets or sets the height of the Web server control. (Inherited from WebControl.)
Public propertyIDGets or sets the programmatic identifier assigned to the server control. (Inherited from Control.)
Protected propertyIdSeparatorInfrastructure. Gets the character used to separate control identifiers. (Inherited from Control.)
Public propertyImageAlignGets or sets the alignment of the Image control in relation to other elements on the Web page. (Inherited from Image.)
Public propertyImageUrlGets or sets the URL that provides the path to an image to display in the Image control. (Inherited from Image.)
Protected propertyIsChildControlStateClearedGets a value indicating whether controls contained within this control have control state. (Inherited from Control.)
Protected propertyIsEnabledGets a value indicating whether the control is enabled. (Inherited from WebControl.)
Protected propertyIsTrackingViewStateGets a value that indicates whether the server control is saving changes to its view state. (Inherited from Control.)
Protected propertyIsViewStateEnabledGets a value indicating whether view state is enabled for this control. (Inherited from Control.)
Protected propertyLoadViewStateByIDGets a value indicating whether the control participates in loading its view state by ID instead of index. (Inherited from Control.)
Public propertyNamingContainerGets 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.)
Public propertyOnClientClickGets or sets the client-side script that executes when an ImageButton control's Click event is raised.
Public propertyPageGets a reference to the Page instance that contains the server control. (Inherited from Control.)
Public propertyParentGets a reference to the server control's parent control in the page control hierarchy. (Inherited from Control.)
Public propertyPostBackUrlGets or sets the URL of the page to post to from the current page when the ImageButton control is clicked.
Public propertyRenderingCompatibilityGets a value that specifies the ASP.NET version that rendered HTML will be compatible with. (Inherited from Control.)
Public propertySiteGets information about the container that hosts the current control when rendered on a design surface. (Inherited from Control.)
Public propertySkinIDGets or sets the skin to apply to the control. (Inherited from WebControl.)
Public propertyStyleGets 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.)
Public propertySupportsDisabledAttributeGets 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. (Overrides Image.SupportsDisabledAttribute.)
Public propertyTabIndexGets or sets the tab index of the Web server control. (Inherited from WebControl.)
Protected propertyTagKeyGets the HtmlTextWriterTag value that corresponds to the ImageButton control. (Overrides WebControl.TagKey.)
Protected propertyTagNameGets the name of the control tag. This property is used primarily by control developers. (Inherited from WebControl.)
Public propertyTemplateControlGets or sets a reference to the template that contains this control. (Inherited from Control.)
Public propertyTemplateSourceDirectoryGets the virtual directory of the Page or UserControl that contains the current server control. (Inherited from Control.)
Protected propertyTextInfrastructure. Gets or sets the value of the ImageButton control's AlternateText property.
Public propertyToolTipGets or sets the text displayed when the mouse pointer hovers over the Web server control. (Inherited from WebControl.)
Public propertyUniqueIDGets the unique, hierarchically qualified identifier for the server control. (Inherited from Control.)
Public propertyValidateRequestModeGets or sets a value that indicates whether the control checks client input from the browser for potentially dangerous values. (Inherited from Control.)
Public propertyValidationGroupGets or sets the group of controls for which the ImageButton control causes validation when it posts back to the server.
Protected propertyViewStateGets 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.)
Protected propertyViewStateIgnoresCaseGets a value that indicates whether the StateBag object is case-insensitive. (Inherited from Control.)
Public propertyViewStateModeGets or sets the view-state mode of this control. (Inherited from Control.)
Public propertyVisibleGets or sets a value that indicates whether a server control is rendered as UI on the page. (Inherited from Control.)
Public propertyWidthGets or sets the width of the Web server control. (Inherited from WebControl.)
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  NameDescription
Protected methodAddAttributesToRenderAdds the attributes of an ImageButton to the output stream for rendering on the client. (Overrides Image.AddAttributesToRender(HtmlTextWriter).)
Protected methodAddedControlCalled after a child control is added to the Controls collection of the Control object. (Inherited from Control.)
Protected methodAddParsedSubObjectNotifies 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.)
Public methodApplyStyleCopies 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.)
Public methodApplyStyleSheetSkinApplies the style properties defined in the page style sheet to the control. (Inherited from Control.)
Protected methodBeginRenderTracingBegins design-time tracing of rendering data. (Inherited from Control.)
Protected methodBuildProfileTreeInfrastructure. 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.)
Protected methodClearCachedClientIDInfrastructure. Sets the cached ClientID value to null. (Inherited from Control.)
Protected methodClearChildControlStateDeletes the control-state information for the server control's child controls. (Inherited from Control.)
Protected methodClearChildStateDeletes the view-state and control-state information for all the server control's child controls. (Inherited from Control.)
Protected methodClearChildViewStateDeletes the view-state information for all the server control's child controls. (Inherited from Control.)
Protected methodClearEffectiveClientIDModeInfrastructure. Sets the ClientIDMode property of the current control instance and of any child controls to Inherit. (Inherited from Control.)
Public methodCopyBaseAttributesCopies 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.)
Protected methodCreateChildControlsCalled 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.)
Protected methodCreateControlCollectionCreates a new ControlCollection object to hold the child controls (both literal and server) of the server control. (Inherited from Control.)
Protected methodCreateControlStyleCreates 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.)
Public methodDataBind()Binds a data source to the invoked server control and all its child controls. (Inherited from Control.)
Protected methodDataBind(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.)
Protected methodDataBindChildrenBinds a data source to the server control's child controls. (Inherited from Control.)
Public methodDisposeEnables a server control to perform final clean up before it is released from memory. (Inherited from Control.)
Protected methodEndRenderTracingEnds design-time tracing of rendering data. (Inherited from Control.)
Protected methodEnsureChildControlsDetermines whether the server control contains child controls. If it does not, it creates child controls. (Inherited from Control.)
Protected methodEnsureIDCreates an identifier for controls that do not have an identifier assigned. (Inherited from Control.)
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodFindControl(String)Searches the current naming container for a server control with the specified id parameter. (Inherited from Control.)
Protected methodFindControl(String, Int32)Infrastructure. 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.)
Public methodFocusSets input focus to a control. (Inherited from Control.)
Protected methodGetDesignModeStateInfrastructure. Gets design-time data for a control. (Inherited from Control.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Protected methodGetPostBackOptionsCreates a PostBackOptions object that represents the ImageButton control's postback behavior.
Public methodGetRouteUrl(Object)Gets the URL that corresponds to a set of route parameters. (Inherited from Control.)
Public methodGetRouteUrl(RouteValueDictionary)Gets the URL that corresponds to a set of route parameters. (Inherited from Control.)
Public methodGetRouteUrl(String, Object)Gets the URL that corresponds to a set of route parameters and a route name. (Inherited from Control.)
Public methodGetRouteUrl(String, RouteValueDictionary)Gets the URL that corresponds to a set of route parameters and a route name. (Inherited from Control.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodGetUniqueIDRelativeToReturns the prefixed portion of the UniqueID property of the specified control. (Inherited from Control.)
Public methodHasControlsDetermines if the server control contains any child controls. (Inherited from Control.)
Protected methodHasEventsReturns a value indicating whether events are registered for the control or any child controls. (Inherited from Control.)
Protected methodIsLiteralContentInfrastructure. Determines if the server control holds only literal content. (Inherited from Control.)
Protected methodLoadControlStateRestores control-state information from a previous page request that was saved by the SaveControlState method. (Inherited from Control.)
Protected methodLoadPostDataProcesses posted data for the ImageButton control.
Protected methodLoadViewStateRestores view-state information from a previous request that was saved with the SaveViewState method. (Inherited from WebControl.)
Protected methodMapPathSecureRetrieves the physical path that a virtual path, either absolute or relative, maps to. (Inherited from Control.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodMergeStyleCopies 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.)
Protected methodOnBubbleEventDetermines whether the event for the server control is passed up the page's UI server control hierarchy. (Inherited from Control.)
Protected methodOnClickRaises the Click event and allows you to handle the Click event directly.
Protected methodOnCommandRaises the Command event and allows you to handle the Command event directly.
Protected methodOnDataBindingRaises the DataBinding event. (Inherited from Control.)
Protected methodOnInitRaises the Init event. (Inherited from Control.)
Protected methodOnLoadRaises the Load event. (Inherited from Control.)
Protected methodOnPreRenderDetermines whether the image has been clicked prior to rendering on the client. (Overrides Control.OnPreRender(EventArgs).)
Protected methodOnUnloadRaises the Unload event. (Inherited from Control.)
Protected methodOpenFileGets a Stream used to read a file. (Inherited from Control.)
Protected methodRaiseBubbleEventAssigns any sources of the event and its information to the control's parent. (Inherited from Control.)
Protected methodRaisePostBackEventRaises events for the ImageButton control when it posts back to the server.
Protected methodRaisePostDataChangedEventNotifies the ASP.NET application that the state of the ImageButton control has changed.
Protected methodRemovedControlCalled after a child control is removed from the Controls collection of the Control object. (Inherited from Control.)
Protected methodRenderRenders the control to the specified HTML writer. (Inherited from WebControl.)
Public methodRenderBeginTagRenders the HTML opening tag of the control to the specified writer. This method is used primarily by control developers. (Inherited from WebControl.)
Protected methodRenderChildrenOutputs 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.)
Protected methodRenderContentsRenders the image control contents to the specified writer. (Inherited from Image.)
Public methodRenderControl(HtmlTextWriter)Outputs server control content to a provided HtmlTextWriter object and stores tracing information about the control if tracing is enabled. (Inherited from Control.)
Protected methodRenderControl(HtmlTextWriter, ControlAdapter)Outputs server control content to a provided HtmlTextWriter object using a provided ControlAdapter object. (Inherited from Control.)
Public methodRenderEndTagRenders the HTML closing tag of the control into the specified writer. This method is used primarily by control developers. (Inherited from WebControl.)
Protected methodResolveAdapterGets the control adapter responsible for rendering the specified control. (Inherited from Control.)
Public methodResolveClientUrlGets a URL that can be used by the browser. (Inherited from Control.)
Public methodResolveUrlConverts a URL into one that is usable on the requesting client. (Inherited from Control.)
Protected methodSaveControlStateSaves any server control state changes that have occurred since the time the page was posted back to the server. (Inherited from Control.)
Protected methodSaveViewStateSaves any state that was modified after the TrackViewState method was invoked. (Inherited from WebControl.)
Protected methodSetDesignModeStateSets design-time data for a control. (Inherited from Control.)
Public methodSetRenderMethodDelegateInfrastructure. Assigns an event handler delegate to render the server control and its content into its parent control. (Inherited from Control.)
Public methodSetTraceData(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.)
Public methodSetTraceData(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.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
Protected methodTrackViewStateCauses the control to track changes to its view state so they can be stored in the object's ViewState property. (Inherited from WebControl.)
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  NameDescription
Public eventClickOccurs when the ImageButton is clicked.
Public eventCommandOccurs when the ImageButton is clicked.
Public eventDataBindingOccurs when the server control binds to a data source. (Inherited from Control.)
Public eventDisposedOccurs 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.)
Public eventInitOccurs when the server control is initialized, which is the first step in its lifecycle. (Inherited from Control.)
Public eventLoadOccurs when the server control is loaded into the Page object. (Inherited from Control.)
Public eventPreRenderOccurs after the Control object is loaded but prior to rendering. (Inherited from Control.)
Public eventUnloadOccurs when the server control is unloaded from memory. (Inherited from Control.)
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  NameDescription
Public Extension MethodFindDataSourceControlReturns the data source that is associated with the data control for the specified control. (Defined by DynamicDataExtensions.)
Public Extension MethodFindFieldTemplateReturns the field template for the specified column in the specified control's naming container. (Defined by DynamicDataExtensions.)
Public Extension MethodFindMetaTableReturns the metatable object for the containing data control. (Defined by DynamicDataExtensions.)
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  NameDescription
Explicit interface implemetationPrivate methodIAttributeAccessor.GetAttributeInfrastructure. Gets an attribute of the Web control with the specified name. (Inherited from WebControl.)
Explicit interface implemetationPrivate methodIAttributeAccessor.SetAttributeSets an attribute of the Web control to the specified name and value. (Inherited from WebControl.)
Explicit interface implemetationPrivate eventIButtonControl.ClickInfrastructure. For a description of this member, see the IButtonControl.Click event.
Explicit interface implemetationPrivate propertyIButtonControl.TextInfrastructure. For a description of this member, see IButtonControl.Text.
Explicit interface implemetationPrivate propertyIControlBuilderAccessor.ControlBuilderFor a description of this member, see IControlBuilderAccessor.ControlBuilder. (Inherited from Control.)
Explicit interface implemetationPrivate methodIControlDesignerAccessor.GetDesignModeStateFor a description of this member, see IControlDesignerAccessor.GetDesignModeState. (Inherited from Control.)
Explicit interface implemetationPrivate methodIControlDesignerAccessor.SetDesignModeStateFor a description of this member, see IControlDesignerAccessor.SetDesignModeState. (Inherited from Control.)
Explicit interface implemetationPrivate methodIControlDesignerAccessor.SetOwnerControlInfrastructure. For a description of this member, see IControlDesignerAccessor.SetOwnerControl. (Inherited from Control.)
Explicit interface implemetationPrivate propertyIControlDesignerAccessor.UserDataFor a description of this member, see IControlDesignerAccessor.UserData. (Inherited from Control.)
Explicit interface implemetationPrivate propertyIDataBindingsAccessor.DataBindingsFor a description of this member, see IDataBindingsAccessor.DataBindings. (Inherited from Control.)
Explicit interface implemetationPrivate propertyIDataBindingsAccessor.HasDataBindingsFor a description of this member, see IDataBindingsAccessor.HasDataBindings. (Inherited from Control.)
Explicit interface implemetationPrivate propertyIExpressionsAccessor.ExpressionsFor a description of this member, see IExpressionsAccessor.Expressions. (Inherited from Control.)
Explicit interface implemetationPrivate propertyIExpressionsAccessor.HasExpressionsFor a description of this member, see IExpressionsAccessor.HasExpressions. (Inherited from Control.)
Explicit interface implemetationPrivate methodIParserAccessor.AddParsedSubObjectFor a description of this member, see IParserAccessor.AddParsedSubObject. (Inherited from Control.)
Explicit interface implemetationPrivate methodIPostBackDataHandler.LoadPostDataInfrastructure. For a description of this member, see IPostBackDataHandler.LoadPostData.
Explicit interface implemetationPrivate methodIPostBackDataHandler.RaisePostDataChangedEventInfrastructure. For a description of this member, see IPostBackDataHandler.RaisePostDataChangedEvent.
Explicit interface implemetationPrivate methodIPostBackEventHandler.RaisePostBackEventInfrastructure. For a description of this member, see IPostBackEventHandler.RaisePostBackEvent.
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In this topic:

Introduction

Use the ImageButton control to display an image that responds to mouse clicks.

Both the Click and Command events are raised when the ImageButton control is clicked.

You can use the OnCommand event handler to make the ImageButton control behave like a Command button. A command name can be associated with the control by using the CommandName property. This allows multiple ImageButton controls to be placed on the same Web page. The value of the CommandName property can then be programmatically identified in the OnCommand event handler to determine the appropriate action to perform when each ImageButton control is clicked. The CommandArgument property can also be used to pass additional information about the command, such as specifying ascending order.

Using the ImageButton control is similar to using the ASP.NET Button control. For more information, see Button Web Server Controls Content Map. and the class overview for the Button control.

Determining Where the User Clicked

By using the OnClick event handler, you can programmatically determine the coordinates where the image is clicked. You can then code a response, based on the values of the coordinates. Note that the origin (0, 0) is located at the upper left corner of the image.

ImageButton Controls and Validation

By default, page validation is performed when an ImageButton control is clicked. Page validation determines whether the input controls associated with a validation control on the page all pass the validation rules specified by the validation control. To prevent page validation from occurring, set the CausesValidation property to false.

Accessibility

For information about how to configure this control so that it generates markup that conforms to accessibility standards, see Accessibility in Visual Studio and ASP.NET and ASP.NET Controls and Accessibility.

Declarative Syntax

<asp:ImageButton
    AccessKey="string"
    AlternateText="string"
    BackColor="color name|#dddddd"
    BorderColor="color name|#dddddd"
    BorderStyle="NotSet|None|Dotted|Dashed|Solid|Double|Groove|Ridge|
        Inset|Outset"
    BorderWidth="size"
    CausesValidation="True|False"
    CommandArgument="string"
    CommandName="string"
    CssClass="string"
    DescriptionUrl="uri"
    Enabled="True|False"
    EnableTheming="True|False"
    EnableViewState="True|False"
    ForeColor="color name|#dddddd"
    Height="size"
    ID="string"
    ImageAlign="NotSet|Left|Right|Baseline|Top|Middle|Bottom|
        AbsBottom|AbsMiddle|TextTop"
    ImageUrl="uri"
    OnClick="Click event handler"
    OnClientClick="string"
    OnCommand="Command 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"
    PostBackUrl="uri"
    runat="server"
    SkinID="string"
    Style="string"
    TabIndex="integer"
    ToolTip="string"
    ValidationGroup="string"
    Visible="True|False"
    Width="size"
/>
TopicLocation
How to: Respond to Button Web Server Control Events in Client ScriptBuilding ASP .NET Web Applications
How to: Add a Login Button to an ASP.NET Web PageBuilding ASP .NET Web Applications
How to: Add Button Web Server Controls to a Web Forms PageBuilding ASP .NET Web Applications
How to: Set Focus on ASP.NET Web Server ControlsBuilding ASP .NET Web Applications
How to: Add ImageButton Web Server Controls to a Web Forms PageBuilding ASP .NET Web Applications
How to: Respond to Button Web Server Control EventsBuilding ASP .NET Web Applications
How to: Respond to Button Events in Data-Bound ControlsBuilding ASP .NET Web Applications
How to: Respond to Button Events in DataList, Repeater, or GridView ItemsBuilding ASP .NET Web Applications
How to: Determine Coordinates in an ImageButton Web Server ControlBuilding ASP .NET Web Applications
How to: Respond to Button Web Server Control Events in Client ScriptBuilding ASP .NET Web Applications
How to: Add a Login Button to an ASP.NET Web PageBuilding ASP .NET Web Applications
How to: Add Button Web Server Controls to a Web Forms PageBuilding ASP .NET Web Applications
How to: Set Focus on ASP.NET Web Server ControlsBuilding ASP .NET Web Applications
How to: Add ImageButton Web Server Controls to a Web Forms PageBuilding ASP .NET Web Applications
How to: Respond to Button Web Server Control EventsBuilding ASP .NET Web Applications
How to: Respond to Button Events in Data-Bound ControlsBuilding ASP .NET Web Applications
How to: Respond to Button Events in DataList, Repeater, or GridView ItemsBuilding ASP .NET Web Applications
How to: Determine Coordinates in an ImageButton Web Server ControlBuilding ASP .NET Web Applications
Walkthrough: Creating and Using ASP.NET Master Pages in Visual Web DeveloperBuilding ASP .NET Web Applications in Visual Studio
How to: Add ImageButton Web Server Controls to a Web Forms Page (Visual Studio)Building ASP .NET Web Applications in Visual Studio
Walkthrough: Data Binding to a Custom Business ObjectBuilding ASP .NET Web Applications in Visual Studio
How to: Add Button Web Server Controls to a Web Forms Page (Visual Studio)Building ASP .NET Web Applications in Visual Studio
How to: Add ImageButton Web Server Controls to a Web Forms PageBuilding ASP .NET Web Applications in Visual Studio
How to: Add Button Web Server Controls to a Web Forms PageBuilding ASP .NET Web Applications in Visual Studio
How to: Determine Coordinates in an ImageButton Web Server ControlBuilding ASP .NET Web Applications in Visual Studio

A Visual Studio Web site project with source code is available to accompany this topic: Download.

The following code example demonstrates how to create an ImageButton control that displays the coordinates at which an image is clicked.

NoteNote

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="C#" 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>
    <title>ImageButton Sample</title>
<script language="C#" runat="server">

      void ImageButton_Click(object sender, ImageClickEventArgs e) 
      {
         Label1.Text = "You clicked the ImageButton control at the coordinates: (" + 
                       e.X.ToString() + ", " + e.Y.ToString() + ")";
      }

   </script>

</head>

<body>

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

      <h3>ImageButton Sample</h3>

      Click anywhere on the image.<br /><br />

      <asp:ImageButton id="imagebutton1" runat="server"
           AlternateText="ImageButton 1"
           ImageAlign="left"
           ImageUrl="images/pict.jpg"
           OnClick="ImageButton_Click"/>

      <br /><br />

      <asp:label id="Label1" runat="server"/>

   </form>

</body>
</html>

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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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