ImageMap Class
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Creates a control that displays an image on a page. When a hot spot region defined within the ImageMap control is clicked, the control either generates a postback to the server or navigates to a specified URL.
public ref class ImageMap : System::Web::UI::WebControls::Image, System::Web::UI::IPostBackEventHandlerpublic class ImageMap : System.Web.UI.WebControls.Image, System.Web.UI.IPostBackEventHandlertype ImageMap = class
inherit Image
interface IPostBackEventHandlerPublic Class ImageMap
Inherits Image
Implements IPostBackEventHandler- Inheritance
- Implements
Examples
The following code example demonstrates how to declaratively create an ImageMap control that contains two CircleHotSpot objects. The HotSpot.HotSpotMode property is set to HotSpotMode.Navigate, which causes the page to navigate to the specified URL each time a user clicks one of the circle hot spot regions. For this example to work correctly, you must supply your own image for the ImageUrl property and update the path to the image appropriately so that the application can locate it.
<%@ page language="C#" %>
<!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 id="head1" runat="server">
<title>ImageMap Class Navigate Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>ImageMap Class Navigate Example</h3>
<h4>Shopping Choices:</h4>
<asp:imagemap id="Shop"
imageurl="Images/ShopChoice.jpg"
width="150"
height="360"
alternatetext="Shopping choices"
runat="Server">
<asp:circlehotspot
navigateurl="http://www.tailspintoys.com"
x="75"
y="290"
radius="75"
hotspotmode="Navigate"
alternatetext="Shop for toys">
</asp:circlehotspot>
<asp:circlehotspot
navigateurl="http://www.cohowinery.com"
x="75"
y="120"
radius="75"
hotspotmode="Navigate"
alternatetext="Shop for wine">
</asp:circlehotspot>
</asp:imagemap>
</form>
</body>
</html>
<%@ Page Language="VB" %>
<!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 id="head1" runat="server">
<title>ImageMap Class Navigate Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>ImageMap Class Navigate Example</h3>
<h4>Shopping Choices:</h4>
<asp:imagemap id="Shop"
imageurl="Images/ShopChoice.jpg"
alternatetext="Shopping choices"
runat="Server">
<asp:circlehotspot
navigateurl="http://www.tailspintoys.com"
x="145"
y="120"
radius="75"
hotspotmode="Navigate"
alternatetext="Shop for toys">
</asp:circlehotspot>
<asp:circlehotspot
navigateurl="http://www.cohowinery.com"
x="145"
y="290"
radius="75"
hotspotmode="Navigate"
alternatetext="Shop for wine">
</asp:circlehotspot>
</asp:imagemap>
</form>
</body>
</html>
The following code example demonstrates how to declaratively create an ImageMap control that contains two RectangleHotSpot objects. The ImageMap.HotSpotMode property is set to HotSpotMode.PostBack, which causes the page to post back to the server each time a user clicks one of the hot spot regions. For this example to work correctly, you must supply your own image for the ImageUrl property and update the path to the image appropriately so that the application can locate it.
<%@ page language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
void VoteMap_Clicked (Object sender, ImageMapEventArgs e)
{
string coordinates;
string hotSpotType;
int yescount = ((ViewState["yescount"] != null)? (int)ViewState["yescount"] : 0);
int nocount = ((ViewState["nocount"] != null)? (int)ViewState["nocount"] : 0);
// When a user clicks the "Yes" hot spot,
// display the hot spot's name and coordinates.
if (e.PostBackValue.Contains("Yes"))
{
yescount += 1;
coordinates = Vote.HotSpots[0].GetCoordinates();
hotSpotType = Vote.HotSpots[0].ToString ();
Message1.Text = "You selected " + hotSpotType + " " + e.PostBackValue + ".<br />" +
"The coordinates are " + coordinates + ".<br />" +
"The current vote count is " + yescount.ToString() +
" yes votes and " + nocount.ToString() + " no votes.";
}
// When a user clicks the "No" hot spot,
// display the hot spot's name and coordinates.
else if (e.PostBackValue.Contains("No"))
{
nocount += 1;
coordinates = Vote.HotSpots[1].GetCoordinates();
hotSpotType = Vote.HotSpots[1].ToString ();
Message1.Text = "You selected " + hotSpotType + " " + e.PostBackValue + ".<br />" +
"The coordinates are " + coordinates + ".<br />" +
"The current vote count is " + yescount.ToString() +
" yes votes and " + nocount.ToString() + " no votes.";
}
else
{
Message1.Text = "You did not click a valid hot spot region.";
}
ViewState["yescount"] = yescount;
ViewState["nocount"] = nocount;
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="head1" runat="server">
<title>ImageMap Class Post Back Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>ImageMap Class Post Back Example</h3>
<asp:imagemap id="Vote"
imageurl="Images/VoteImage.jpg"
width="400"
height="200"
alternatetext="Vote Yes or No"
hotspotmode="PostBack"
onclick="VoteMap_Clicked"
runat="Server">
<asp:RectangleHotSpot
top="0"
left="0"
bottom="200"
right="200"
postbackvalue="Yes"
alternatetext="Vote yes">
</asp:RectangleHotSpot>
<asp:RectangleHotSpot
top="0"
left="201"
bottom="200"
right="400"
postbackvalue="No"
alternatetext="Vote no">
</asp:RectangleHotSpot>
</asp:imagemap>
<br /><br />
<asp:label id="Message1"
runat="Server">
</asp:label>
</form>
</body>
</html>
<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Sub VoteMap_Clicked(ByVal sender As Object, ByVal e As ImageMapEventArgs)
Dim coordinates As String
Dim hotSpotType As String
Dim yescount As Integer
Dim nocount As Integer
If (ViewState("yescount") IsNot Nothing) Then
yescount = Convert.ToInt32(ViewState("yescount"))
Else
yescount = 0
End If
If (ViewState("nocount") IsNot Nothing) Then
nocount = Convert.ToInt32(ViewState("nocount"))
Else
nocount = 0
End If
' When a user clicks the "Yes" hot spot,
' display the hot spot's name and coordinates.
If (e.PostBackValue.Contains("Yes")) Then
yescount += 1
coordinates = Vote.HotSpots(0).GetCoordinates()
hotSpotType = Vote.HotSpots(0).ToString()
Message1.Text = "You selected " & hotSpotType & " " & e.PostBackValue & ".<br />" & _
"The coordinates are " & coordinates & ".<br />" & _
"The current vote count is " & yescount.ToString() & _
" yes votes and " & nocount.ToString() & " no votes."
' When a user clicks the "No" hot spot,
' display the hot spot's name and coordinates.
ElseIf (e.PostBackValue.Contains("No")) Then
nocount += 1
coordinates = Vote.HotSpots.Item(1).GetCoordinates()
hotSpotType = Vote.HotSpots.Item(1).ToString()
Message1.Text = "You selected " & hotSpotType & " " & e.PostBackValue & ".<br />" & _
"The coordinates are " & coordinates & ".<br />" & _
"The current vote count is " & yescount.ToString() & _
" yes votes and " & nocount.ToString() & " no votes."
Else
Message1.Text = "You did not click a valid hot spot region."
End If
ViewState("yescount") = yescount
ViewState("nocount") = nocount
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="head1" runat="server">
<title>ImageMap Class Post Back Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>ImageMap Class Post Back Example</h3>
<asp:imagemap id="Vote"
imageurl="Images/VoteImage.jpg"
width="400"
height="200"
alternatetext="Vote Yes or No"
hotspotmode="PostBack"
onclick="VoteMap_Clicked"
runat="Server">
<asp:RectangleHotSpot
top="0"
left="0"
bottom="200"
right="200"
postbackvalue="Yes"
alternatetext="Vote yes">
</asp:RectangleHotSpot>
<asp:RectangleHotSpot
top="0"
left="201"
bottom="200"
right="400"
postbackvalue="No"
alternatetext="Vote no">
</asp:RectangleHotSpot>
</asp:imagemap>
<br /><br />
<asp:label id="Message1"
runat="Server">
</asp:label>
</form>
</body>
</html>
The following code example demonstrates how to create an ImageMap control that contains hot spots with different behaviors. The background area is a defined as a single RectangleHotSpot that posts back to the server. Three RectangleHotSpot objects are defined in the same region. Each of these hot spots looks like a button and navigates to a URL. When an ImageMap control is clicked in a region where two hot spots overlap, the hot spot that is declared first has precedence. In this example, the button hot spots are declared first and the background hot spot that contains them is declared last. Therefore, the user gets the behavior of the button RectangleHotSpot object, not the background RectangleHotSpot object, when the user clicks a button hot spot. For this example to work correctly, you must supply your own image for the ImageUrl property and update the path to the image appropriately so that the application can locate it.
<%@ page language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
void ButtonsMap_Clicked(object sender, ImageMapEventArgs e)
{
// When a user clicks the "Background" hot spot,
// display the hot spot's value.
if (e.PostBackValue == "Background")
{
string coordinates = Buttons.HotSpots[3].GetCoordinates();
Message1.Text = "You selected the " + e.PostBackValue + "<br />" +
"The coordinates are " + coordinates;
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="head1" runat="server">
<title>ImageMap Class Mixed HotSpotMode Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>ImageMap Class Mixed HotSpotMode Example</h3>
<!--In this scenario, the ImageMap.HotSpotMode
property is not set, because the
HotSpotMode property is set on each individual
RectangleHotSpot object to specify its behavior.-->
<asp:imagemap id="Buttons"
imageurl="Images/MixedImage.jpg"
width="350"
height="350"
alternatetext="Navigation buttons"
hotspotmode="NotSet"
onclick="ButtonsMap_Clicked"
runat="Server">
<asp:RectangleHotSpot
hotspotmode="Navigate"
NavigateUrl="http://www.contoso.com"
alternatetext="Button 1"
top="50"
left="50"
bottom="100"
right="300">
</asp:RectangleHotSpot>
<asp:RectangleHotSpot
hotspotmode="Navigate"
NavigateUrl="http://www.tailspintoys.com"
alternatetext="Button 2"
top="150"
left="50"
bottom="200"
right="300">
</asp:RectangleHotSpot>
<asp:RectangleHotSpot
hotspotmode="Navigate"
NavigateUrl="http://www.cohowinery.com"
alternatetext="Button 3"
top="250"
left="50"
bottom="300"
right="300">
</asp:RectangleHotSpot>
<asp:RectangleHotSpot
hotspotmode="PostBack"
PostBackValue="Background"
alternatetext="Background"
top="0"
left="0"
bottom="350"
right="350">
</asp:RectangleHotSpot>
</asp:imagemap>
<br />
<asp:label id="Message1"
runat="Server">
</asp:label>
</form>
</body>
</html>
<%@ page language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Sub ButtonsMap_Clicked(ByVal sender As Object, ByVal e As ImageMapEventArgs)
' When a user clicks the "Background" hot spot,
' display the hot spot's value.
If (e.PostBackValue = "Background") Then
Dim coordinates As String
coordinates = Buttons.HotSpots(3).GetCoordinates()
Message1.Text = "You selected the " & e.PostBackValue & "<br />" & _
"The coordinates are " & coordinates
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="head1" runat="server">
<title>ImageMap Class Mixed HotSpotMode Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>ImageMap Class Mixed HotSpotMode Example</h3>
<!--In this scenario, the ImageMap.HotSpotMode
property is not set, because the
HotSpotMode property is set on each individual
RectangleHotSpot object to specify its behavior.-->
<asp:imagemap id="Buttons"
imageurl="Images/MixedImage.jpg"
width="350"
height="350"
alternatetext="Navigation buttons"
hotspotmode="NotSet"
onclick="ButtonsMap_Clicked"
runat="Server">
<asp:RectangleHotSpot
hotspotmode="Navigate"
NavigateUrl="http://www.contoso.com"
alternatetext="Button 1"
top="50"
left="50"
bottom="100"
right="300">
</asp:RectangleHotSpot>
<asp:RectangleHotSpot
hotspotmode="Navigate"
NavigateUrl="http://www.tailspintoys.com"
alternatetext="Button 2"
top="150"
left="50"
bottom="200"
right="300">
</asp:RectangleHotSpot>
<asp:RectangleHotSpot
hotspotmode="Navigate"
NavigateUrl="http://www.cohowinery.com"
alternatetext="Button 3"
top="250"
left="50"
bottom="300"
right="300">
</asp:RectangleHotSpot>
<asp:RectangleHotSpot
hotspotmode="PostBack"
PostBackValue="Background"
alternatetext="Background"
top="0"
left="0"
bottom="350"
right="350">
</asp:RectangleHotSpot>
</asp:imagemap>
<br />
<asp:label id="Message1"
runat="Server">
</asp:label>
</form>
</body>
</html>
Remarks
In this topic:
Introduction
Use the ImageMap control to create an image that contains defined hot spot regions. When a user clicks a hot spot region, the control can either generate a postback to the server or navigate to a specified URL. For example, you can use this control to display a map of a geographical region. When a user clicks a specific region on the map, the control navigates to a URL that provides additional data about the selected region. You can also use this control to generate a postback to the server and run specific code based on the hot spot region that was clicked. For example, you can use an ImageMap control to capture user responses such as votes. When a user clicks the hot spot region defined for yes votes, code is called to record a yes response in a database. When a user clicks on the hot spot region defined for no votes, a no response is recorded. You can also mix these two scenarios within a single ImageMap control. For example, you can specify one hot spot region to navigate to a URL and another hot spot region to post back to the server.
Use the ImageUrl property to specify the path to the image to display for the ImageMap control. You can define any number of HotSpot objects within an ImageMap control. You can use the CircleHotSpot, RectangleHotSpot, and PolygonHotSpot classes to define hot spot regions. Alternatively, you can derive from the abstract HotSpot class to define your own custom hot spot object.
There are two ways to specify the behavior of a HotSpot object in an ImageMap control when the HotSpot is clicked. You can use either the HotSpotMode property on the ImageMap control or the HotSpotMode property on an individual HotSpot object. These properties are set using one of the HotSpotMode enumeration values. If both properties are set, the HotSpotMode property specified on each individual HotSpot object takes precedence over the HotSpotMode property on the ImageMap control.
To navigate to a URL, set either the ImageMap.HotSpotMode property or the HotSpot.HotSpotMode property to HotSpotMode.Navigate. Use the NavigateUrl property to specify the URL to navigate to.
To generate a postback to the server, set either the ImageMap.HotSpotMode property or the HotSpot.HotSpotMode property to HotSpotMode.Postback. Use the PostBackValue property to specify a name for the hot spot region. This name will be passed in the ImageMapEventArgs event data when a postback event occurs. When a postback HotSpot is clicked, the Click event is raised. To programmatically control the actions performed when a postback HotSpot is clicked, provide an event handler for the Click event.
To cause all HotSpot objects in an ImageMap control to have the same behavior, use the ImageMap.HotSpotMode property to specify the behavior. Then, either set the HotSpot.HotSpotMode property on each individual HotSpot object to HotSpotMode.NotSet or do not specify a value for the HotSpot.HotSpotMode property.
To specify different behaviors for HotSpot objects in an ImageMap, set the HotSpot.HotSpotMode property on each individual HotSpot object to either HotSpotMode.Navigate or HotSpotMode.PostBack.
Note
If an ImageMap control's ImageMap.HotSpotMode property or the HotSpot.HotSpotMode property on any of the HotSpot objects it contains is set to HotSpotMode.NotSet or is not set to a value, by default the behavior is HotSpotMode.Navigate.
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:ImageMap
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"
CssClass="string"
DescriptionUrl="uri"
Enabled="True|False"
EnableTheming="True|False"
EnableViewState="True|False"
ForeColor="color name|#dddddd"
Height="size"
HotSpotMode="NotSet|Navigate|PostBack|Inactive"
ID="string"
ImageAlign="NotSet|Left|Right|Baseline|Top|Middle|Bottom|
AbsBottom|AbsMiddle|TextTop"
ImageUrl="uri"
OnClick="Click 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"
Target="string"
ToolTip="string"
Visible="True|False"
Width="size"
>
<asp:CircleHotSpot
AccessKey="string"
AlternateText="string"
HotSpotMode="NotSet|Navigate|PostBack|Inactive"
NavigateUrl="uri"
PostBackValue="string"
Radius="integer"
TabIndex="integer"
Target="string|_blank|_parent|_search|_self|_top"
X="integer"
Y="integer"
/>
<asp:PolygonHotSpot
AccessKey="string"
AlternateText="string"
Coordinates="string"
HotSpotMode="NotSet|Navigate|PostBack|Inactive"
NavigateUrl="uri"
PostBackValue="string"
TabIndex="integer"
Target="string|_blank|_parent|_search|_self|_top"
/>
<asp:RectangleHotSpot
AccessKey="string"
AlternateText="string"
Bottom="integer"
HotSpotMode="NotSet|Navigate|PostBack|Inactive"
Left="integer"
NavigateUrl="uri"
PostBackValue="string"
Right="integer"
TabIndex="integer"
Target="string|_blank|_parent|_search|_self|_top"
Top="integer"
/>
</asp:ImageMap>
Constructors
| ImageMap() |
Initializes a new instance of the ImageMap class. |
Properties
| AccessKey |
Gets or sets the access key that allows you to quickly navigate to the Web server control. (Inherited from WebControl) |
| Adapter |
Gets the browser-specific adapter for the control. (Inherited from Control) |
| AlternateText |
Gets 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) |
| AppRelativeTemplateSourceDirectory |
Gets or sets the application-relative virtual directory of the Page or UserControl object that contains this control. (Inherited from Control) |
| Attributes |
Gets the collection of arbitrary attributes (for rendering only) that do not correspond to properties on the control. (Inherited from WebControl) |
| BackColor |
Gets or sets the background color of the Web server control. (Inherited from WebControl) |
| BindingContainer |
Gets the control that contains this control's data binding. (Inherited from Control) |
| BorderColor |
Gets or sets the border color of the Web control. (Inherited from WebControl) |
| BorderStyle |
Gets or sets the border style of the Web server control. (Inherited from WebControl) |
| BorderWidth |
Gets or sets the border width of the Web server control. (Inherited from WebControl) |
| ChildControlsCreated |
Gets a value that indicates whether the server control's child controls have been created. (Inherited from Control) |
| ClientID |
Gets the control ID for HTML markup that is generated by ASP.NET. (Inherited from Control) |
| ClientIDMode |
Gets or sets the algorithm that is used to generate the value of the ClientID property. (Inherited from Control) |
| ClientIDSeparator |
Gets a character value representing the separator character used in the ClientID property. (Inherited from Control) |
| Context |
Gets the HttpContext object associated with the server control for the current Web request. (Inherited from Control) |
| Controls |
Gets a ControlCollection object that represents the child controls for a specified server control in the UI hierarchy. (Inherited from Control) |
| ControlStyle |
Gets the style of the Web server control. This property is used primarily by control developers. (Inherited from WebControl) |
| 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) |
| CssClass |
Gets or sets the Cascading Style Sheet (CSS) class rendered by the Web server control on the client. (Inherited from WebControl) |
| DataItemContainer |
Gets a reference to the naming container if the naming container implements IDataItemContainer. (Inherited from Control) |
| DataKeysContainer |
Gets a reference to the naming container if the naming container implements IDataKeysControl. (Inherited from Control) |
| DescriptionUrl |
Gets or sets the location to a detailed description for the image. (Inherited from Image) |
| DesignMode |
Gets a value indicating whether a control is being used on a design surface. (Inherited from Control) |
| Enabled |
Gets or sets a value indicating whether the control can respond to user interaction. |
| EnableTheming |
Gets or sets a value indicating whether themes apply to this control. (Inherited from WebControl) |
| 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) |
| Events |
Gets a list of event handler delegates for the control. This property is read-only. (Inherited from Control) |
| Font |
Gets the font properties for the text associated with the control. (Inherited from Image) |
| ForeColor |
Gets or sets the foreground color (typically the color of the text) of the Web server control. (Inherited from WebControl) |
| GenerateEmptyAlternateText |
Gets or sets a value indicating whether the control generates an alternate text attribute for an empty string value. (Inherited from Image) |
| HasAttributes |
Gets a value indicating whether the control has attributes set. (Inherited from WebControl) |
| HasChildViewState |
Gets a value indicating whether the current server control's child controls have any saved view-state settings. (Inherited from Control) |
| Height |
Gets or sets the height of the Web server control. (Inherited from WebControl) |
| HotSpotMode |
Gets or sets the default behavior for the HotSpot objects of an ImageMap control when the HotSpot objects are clicked. |
| HotSpots |
Gets a collection of HotSpot objects that represents the defined hot spot regions in an ImageMap control. |
| ID |
Gets or sets the programmatic identifier assigned to the server control. (Inherited from Control) |
| IdSeparator |
Gets the character used to separate control identifiers. (Inherited from Control) |
| ImageAlign |
Gets or sets the alignment of the Image control in relation to other elements on the Web page. (Inherited from Image) |
| ImageUrl |
Gets or sets the URL that provides the path to an image to display in the Image control. (Inherited from Image) |
| IsChildControlStateCleared |
Gets a value indicating whether controls contained within this control have control state. (Inherited from Control) |
| IsEnabled |
Gets a value indicating whether the control is enabled. (Inherited from WebControl) |
| IsTrackingViewState |
Gets a value that indicates whether the server control is saving changes to its view state. (Inherited from Control) |
| IsViewStateEnabled |
Gets a value indicating whether view state is enabled for this control. (Inherited from Control) |
| LoadViewStateByID |
Gets a value indicating whether the control participates in loading its view state by ID instead of index. (Inherited from Control) |
| NamingContainer |
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 |
Gets a reference to the Page instance that contains the server control. (Inherited from Control) |
| Parent |
Gets a reference to the server control's parent control in the page control hierarchy. (Inherited from Control) |
| RenderingCompatibility |
Gets a value that specifies the ASP.NET version that rendered HTML will be compatible with. (Inherited from Control) |
| Site |
Gets information about the container that hosts the current control when rendered on a design surface. (Inherited from Control) |
| SkinID |
Gets or sets the skin to apply to the control. (Inherited from WebControl) |
| 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) |
| SupportsDisabledAttribute |
Gets a value that indicates whether the control should set the |
| TabIndex |
Gets or sets the tab index of the Web server control. (Inherited from WebControl) |
| TagKey |
Gets the HtmlTextWriterTag value that corresponds to this Web server control. This property is used primarily by control developers. (Inherited from WebControl) |
| TagName |
Gets the name of the control tag. This property is used primarily by control developers. (Inherited from WebControl) |
| Target |
Gets or sets the target window or frame that displays the Web page content linked to when the ImageMap control is clicked. |
| TemplateControl |
Gets or sets a reference to the template that contains this control. (Inherited from Control) |
| TemplateSourceDirectory |
Gets the virtual directory of the Page or UserControl that contains the current server control. (Inherited from Control) |
| ToolTip |
Gets or sets the text displayed when the mouse pointer hovers over the Web server control. (Inherited from WebControl) |
| UniqueID |
Gets the unique, hierarchically qualified identifier for the server control. (Inherited from Control) |
| ValidateRequestMode |
Gets or sets a value that indicates whether the control checks client input from the browser for potentially dangerous values. (Inherited from Control) |
| 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) |
| ViewStateIgnoresCase |
Gets a value that indicates whether the StateBag object is case-insensitive. (Inherited from Control) |
| ViewStateMode |
Gets or sets the view-state mode of this control. (Inherited from Control) |
| Visible |
Gets or sets a value that indicates whether a server control is rendered as UI on the page. (Inherited from Control) |
| Width |
Gets or sets the width of the Web server control. (Inherited from WebControl) |
Methods
| AddAttributesToRender(HtmlTextWriter) |
Adds the HTML attributes and styles of an ImageMap control to be rendered to the specified HtmlTextWriter. |
| AddedControl(Control, Int32) |
Called after a child control is added to the Controls collection of the Control object. (Inherited from Control) |
| 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) |
| 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) |
| ApplyStyleSheetSkin(Page) |
Applies the style properties defined in the page style sheet to the control. (Inherited from Control) |
| BeginRenderTracing(TextWriter, Object) |
Begins design-time tracing of rendering data. (Inherited from Control) |
| BuildProfileTree(String, Boolean) |
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() |
Sets the cached ClientID value to |
| ClearChildControlState() |
Deletes the control-state information for the server control's child controls. (Inherited from Control) |
| ClearChildState() |
Deletes the view-state and control-state information for all the server control's child controls. (Inherited from Control) |
| ClearChildViewState() |
Deletes the view-state information for all the server control's child controls. (Inherited from Control) |
| ClearEffectiveClientIDMode() |
Sets the ClientIDMode property of the current control instance and of any child controls to Inherit. (Inherited from Control) |
| 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) |
| 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) |
| CreateControlCollection() |
Creates a new ControlCollection object to hold the child controls (both literal and server) of the server control. (Inherited from Control) |
| 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) |
| DataBind() |
Binds a data source to the invoked server control and all its child controls. (Inherited from Control) |
| 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) |
| DataBindChildren() |
Binds a data source to the server control's child controls. (Inherited from Control) |
| Dispose() |
Enables a server control to perform final clean up before it is released from memory. (Inherited from Control) |
| EndRenderTracing(TextWriter, Object) |
Ends design-time tracing of rendering data. (Inherited from Control) |
| EnsureChildControls() |
Determines whether the server control contains child controls. If it does not, it creates child controls. (Inherited from Control) |
| EnsureID() |
Creates an identifier for controls that do not have an identifier assigned. (Inherited from Control) |
| Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
| FindControl(String, Int32) |
Searches the current naming container for a server control with the specified |
| FindControl(String) |
Searches the current naming container for a server control with the specified |
| Focus() |
Sets input focus to a control. (Inherited from Control) |
| GetDesignModeState() |
Gets design-time data for a control. (Inherited from Control) |
| GetHashCode() |
Serves as the default hash function. (Inherited from Object) |
| GetRouteUrl(Object) |
Gets the URL that corresponds to a set of route parameters. (Inherited from Control) |
| GetRouteUrl(RouteValueDictionary) |
Gets the URL that corresponds to a set of route parameters. (Inherited from Control) |
| GetRouteUrl(String, Object) |
Gets the URL that corresponds to a set of route parameters and a route name. (Inherited from Control) |
| GetRouteUrl(String, RouteValueDictionary) |
Gets the URL that corresponds to a set of route parameters and a route name. (Inherited from Control) |
| GetType() |
Gets the Type of the current instance. (Inherited from Object) |
| GetUniqueIDRelativeTo(Control) |
Returns the prefixed portion of the UniqueID property of the specified control. (Inherited from Control) |
| HasControls() |
Determines if the server control contains any child controls. (Inherited from Control) |
| HasEvents() |
Returns a value indicating whether events are registered for the control or any child controls. (Inherited from Control) |
| IsLiteralContent() |
Determines if the server control holds only literal content. (Inherited from Control) |
| LoadControlState(Object) |
Restores control-state information from a previous page request that was saved by the SaveControlState() method. (Inherited from Control) |
| LoadViewState(Object) |
Restores view-state information for the ImageMap control from a previous page request that was saved by the SaveViewState() method. |
| MapPathSecure(String) |
Retrieves the physical path that a virtual path, either absolute or relative, maps to. (Inherited from Control) |
| MemberwiseClone() |
Creates a shallow copy of the current Object. (Inherited from Object) |
| 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) |
| OnBubbleEvent(Object, EventArgs) |
Determines whether the event for the server control is passed up the page's UI server control hierarchy. (Inherited from Control) |
| OnClick(ImageMapEventArgs) | |
| OnDataBinding(EventArgs) |
Raises the DataBinding event. (Inherited from Control) |
| OnInit(EventArgs) |
Raises the Init event. (Inherited from Control) |
| OnLoad(EventArgs) |
Raises the Load event. (Inherited from Control) |
| OnPreRender(EventArgs) |
Raises the PreRender event. (Inherited from Control) |
| OnUnload(EventArgs) |
Raises the Unload event. (Inherited from Control) |
| OpenFile(String) |
Gets a Stream used to read a file. (Inherited from Control) |
| RaiseBubbleEvent(Object, EventArgs) |
Assigns any sources of the event and its information to the control's parent. (Inherited from Control) |
| RaisePostBackEvent(String) |
Raises events for the ImageMap control when a form is posted back to the server. |
| RemovedControl(Control) |
Called after a child control is removed from the Controls collection of the Control object. (Inherited from Control) |
| Render(HtmlTextWriter) |
Sends the ImageMap control content to the specified HtmlTextWriter object, which writes the content to render on the client. |
| 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) |
| 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) |
| RenderContents(HtmlTextWriter) |
Renders the image control contents to the specified writer. (Inherited from Image) |
| RenderControl(HtmlTextWriter, ControlAdapter) |
Outputs server control content to a provided HtmlTextWriter object using a provided ControlAdapter object. (Inherited from Control) |
| 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) |
| 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) |
| ResolveAdapter() |
Gets the control adapter responsible for rendering the specified control. (Inherited from Control) |
| ResolveClientUrl(String) |
Gets a URL that can be used by the browser. (Inherited from Control) |
| ResolveUrl(String) |
Converts a URL into one that is usable on the requesting client. (Inherited from Control) |
| SaveControlState() |
Saves any server control state changes that have occurred since the time the page was posted back to the server. (Inherited from Control) |
| SaveViewState() |
Saves any changes to an ImageMap control's view-state that have occurred since the time the page was posted back to the server. |
| SetDesignModeState(IDictionary) |
Sets design-time data for a control. (Inherited from Control) |
| SetRenderMethodDelegate(RenderMethod) |
Assigns an event handler delegate to render the server control and its content into its parent control. (Inherited from Control) |
| 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) |
| 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) |
| ToString() |
Returns a string that represents the current object. (Inherited from Object) |
| TrackViewState() |
Tracks view-state changes to the ImageMap control so they can be stored in the control's StateBag object. This object is accessible through the ViewState property. |
Events
| Click |
Occurs when a HotSpot object in an ImageMap control is clicked. |
| DataBinding |
Occurs when the server control binds to a data source. (Inherited from Control) |
| 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) |
| Init |
Occurs when the server control is initialized, which is the first step in its lifecycle. (Inherited from Control) |
| Load |
Occurs when the server control is loaded into the Page object. (Inherited from Control) |
| PreRender |
Occurs after the Control object is loaded but prior to rendering. (Inherited from Control) |
| Unload |
Occurs when the server control is unloaded from memory. (Inherited from Control) |
Explicit Interface Implementations
Extension Methods
| FindDataSourceControl(Control) |
Returns the data source that is associated with the data control for the specified control. |
| FindFieldTemplate(Control, String) |
Returns the field template for the specified column in the specified control's naming container. |
| FindMetaTable(Control) |
Returns the metatable object for the containing data control. |
