Using Image Map Control in ASP.NET

Parth Dave
8y
12.6k
0
0

Blog

The ImageMap control in ASP.NET 2.0 and onward versions can be used to create an image that contains defined hot spot regions. When a user clicks a hot spot region, the control can either generate a post back to the server or navigate to a specified URL.

There are three kinds of hot spot regions defined in ImageMap control.

RectangleHotSpot
CircleHotSpot
PolygonHotSpot

The RectangleHotSpot defines rectangular hot spot regions. The CircleHotSpotdefines circle-shaped ones and the PolygonHotSpot is used for irregularly shaped hot spot area.

Let's have a look at one example:

Map.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="map.aspx.cs" Inherits="map" %>
<!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>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<table>
<tr>
<td colspan="4">
<asp:ImageMap ID="india" runat="server" ImageUrl="~/Map.jpg" Height="500px" Width="887px" HotSpotMode="PostBack" OnClick="india_Click" BackColor="#C0C000" BorderColor="DarkSlateGray" ForeColor="Red">
<asp:CircleHotSpot Radius="7" X="215" Y="125" HotSpotMode="PostBack" NavigateUrl="~/map.aspx" PostBackValue="bhuj" AlternateText="Bhuj" />
<asp:CircleHotSpot Radius="7" X="525" Y="95" HotSpotMode="PostBack" NavigateUrl="~/map.aspx" PostBackValue="patan" />
<asp:CircleHotSpot Radius="7" X="565" Y="45" HotSpotMode="PostBack" NavigateUrl="~/map.aspx" PostBackValue="ambaji" />
<asp:CircleHotSpot Radius="7" X="525" Y="150" HotSpotMode="PostBack" NavigateUrl="~/map.aspx" PostBackValue="me" />
<asp:CircleHotSpot Radius="7" X="625" Y="120" HotSpotMode="PostBack" NavigateUrl="~/map.aspx" PostBackValue="him" />
<asp:CircleHotSpot Radius="7" X="495" Y="195" HotSpotMode="PostBack" NavigateUrl="~/map.aspx" PostBackValue="sure" />
<asp:CircleHotSpot Radius="7" X="565" Y="195" HotSpotMode="PostBack" NavigateUrl="~/map.aspx" PostBackValue="ahd" /> </asp:ImageMap>
</td>
<td colspan="2" style="width: 364px">
<asp:Panel ID="p1" runat="server" Height="20px" Visible="false">
<asp:Label ID="lbl1" Text="CITY:Bhuj STATE:Gujarat" runat="server" Width="162px" Height="57px" BackColor="MediumVioletRed" Font-Bold="True" Font-Size="Larger" ForeColor="Blue"></asp:Label>
</asp:Panel>
<asp:Panel ID="p2" runat="server" Height="18px" Visible="false">
<asp:Label ID="lbl2" Text="CITY:Patan STATE:Gujarat" runat="server" Width="162px" Height="45px" BackColor="MediumVioletRed" Font-Bold="True" Font-Size="Larger" ForeColor="Blue"></asp:Label>
</asp:Panel>
<asp:Panel ID="p3" runat="server" Height="16px" Visible="false">
<asp:Label ID="lbl3" Text="CITY:Ambaji STATE:Gujarat" runat="server" Width="160px" BackColor="MediumVioletRed" Font-Bold="True" Font-Size="Larger" ForeColor="Blue"></asp:Label>
</asp:Panel>
<asp:Panel ID="p4" runat="server" Height="14px" Visible="false">
<asp:Label ID="lbl4" Text="CITY:Mehsana STATE:Gujarat" runat="server" Width="161px" BackColor="MediumVioletRed" Font-Bold="True" Font-Size="Larger" ForeColor="Blue"></asp:Label>
</asp:Panel>
<asp:Panel ID="p5" runat="server" Height="14px" Visible="false">
<asp:Label ID="lbl5" Text="CITY:Himatnagar STATE:Gujarat" runat="server" Width="161px" BackColor="MediumVioletRed" Font-Bold="True" Font-Size="Larger" ForeColor="Blue"></asp:Label>
</asp:Panel>
<asp:Panel ID="p6" runat="server" Height="14px" Visible="false">
<asp:Label ID="lbl6" Text="CITY:Surendranagar STATE:Gujarat" runat="server" Width="90px" BackColor="MediumVioletRed" Font-Bold="True" Font-Size="Larger" ForeColor="Blue"></asp:Label>
</asp:Panel>
<asp:Panel ID="p7" runat="server" Height="14px" Visible="false">
<asp:Label ID="lbl7" Text="CITY:Ahemdabad STATE:Gujarat" runat="server" Width="162px" BackColor="MediumVioletRed" Font-Bold="True" Font-Size="Larger" ForeColor="Blue"></asp:Label>
</asp:Panel>
</td>
</tr>
</table>
</div>
</form>
</body>
</html>