ASP.NET Syntax   ASP.NET Syntax for Web Controls

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Creates a control that displays an image on a page. When a hot spot region that is defined within the ImageMap control is clicked, the control either generates a postback to the server or navigates to a specified URL.

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"
   GenerateEmptyAlternateText = "True | False"
   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>

For information on the individual members of this class, see ImageMap in the class library.

The ImageMap control renders an image that can contain custom-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.

If you only need to capture the coordinates where the user clicked, and do not require the hot spot capabilities, the Image control can be a serviceable alternative.

The following example demonstrates how to create an ImageMap control declaratively that contains RectangleHotSpot and CircleHotSpot objects. The HotSpot property is set to HotSpotMode.Navigate, which causes the page to navigate to the specified URL each time a user clicks one of the hot spot regions.

<asp:imagemap id="solarsys"
   imageurl = "~/abkd/shared/images/solarsys.gif"
   width=504 height=126
   alternatetext = "Solar System"
   runat="Server">

   <asp:rectanglehotspot
      alternatetext = "Sun"
      left=0 top=0 right=76 bottom=122
      hotspotmode = "Navigate"
      navigateurl = "/asp.net.ph/shared/images/sun.gif"
      target = "_blank" />

   <asp:circlehotspot
      navigateurl = "/asp.net.ph/shared/images/mercury.gif"
      x=90 y=61 radius=15
      hotspotmode = "Navigate"
      alternatetext = "Mercury"
      target = "_blank" />

   <asp:circlehotspot
      navigateurl = "/asp.net.ph/shared/images/venus.gif"
      x=124 y=61 radius=18
      hotspotmode = "Navigate"
      alternatetext = "Venus"
      target = "_blank" />

      ... other hot spot definitions here ...

</asp:imagemap>

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ImageMap Class   ImageMap Web Server Control