Using ASP.NET 2.0's ImageMap Control

  • Thread starter Thread starter Nathan Sokalski
  • Start date Start date
N

Nathan Sokalski

I am using ASP.NET 2.0's ImageMap Control to create 2 imagemaps, one
directly below the other. When I do this a thin blank space appears between
them. After several days of frustration I realized that the difference
between what the ImageMap Control outputs and the html on the page I was
trying to reproduce with ASP.NET 2.0 was the following:


Handwritten HTML imagemaps (no whitestrip between them):

<table>
<tr>
<td>
<img/><br/>
<map>
<area/>
</map>
<img/><br/>
<map>
<area/>
</map>
</td>
</tr>
</table>

ASP.NET 2.0 generated HTML using the ImageMap Control (whitestrip appears
between the two ImageMaps):

<table>
<tr>
<td>
<img/>
<map>
<area/>
</map>
<img/>
<map>
<area/>
</map>
</td>
</tr>
</table>


In case you didn't see it, the difference is that the handwritten HTML
includes a <br/> between the <img/> and <map> tags. However, this is not
achievable (at least not using any technique I can think of) using the
ASP.NET 2.0 ImageMap Control. What can I do? Thanks.
 
I have tried using CSS properties to control this, but it does not seem to
help. Here is my actual code (I removed the <asp:RectangleHotSpot/> tags to
shorten it):

<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr>
<td align="center" style="margin:0px;padding:0px;">
<asp:ImageMap ID="mapBanner" runat="server"
BorderWidth="0px" Height="82px" ImageUrl="../images/top_banner.jpg"
Width="1000px" style="margin:0px;padding:0px;">
</asp:ImageMap>
<asp:ImageMap ID="mapNavBanner" runat="server"
Width="1000" Height="19" BorderWidth="0" ImageUrl="../images/navigation.jpg"
style="margin:0px;padding:0px;">
</asp:ImageMap>
</td>
</tr>
</table>

I have also tried using two separate table rows, which did not help either.
Any other ideas? Thanks.
 
Try it the way I suggested. Get them out of the td and into divs of their
own.

<%= Clinton
 
That didn't help either. I tried using the following tag layout:

<div style="margin:0px;padding:0px;">
<asp:ImageMap ID="mapBanner" runat="server" BorderWidth="0px"
Height="82px" ImageUrl="../images/top_banner.jpg" Width="1000px"
style="margin:0px;padding:0px;">
</asp:ImageMap>
</div>
<div style="margin:0px;padding:0px;">
<asp:ImageMap ID="mapNavBanner" runat="server" Width="1000"
Height="19" BorderWidth="0" ImageUrl="../images/navigation.jpg"
style="margin:0px;padding:0px;">
</asp:ImageMap>
</div>

but the whitestrip still shows up between the ImageMaps. Any other ideas?
Thanks.
 
What does the ImageMap control render in the html? A div of its own or the
tables you have been pasting into this news article? You might be asked to
put the images you are using on a server with a URL I or others can look at
before we could help any further.

<%= Clinton
 
The exact code in my *.ascx file is:


<%@ Control Language="vb" AutoEventWireup="false"
CodeBehind="titlebanner.ascx.vb" Inherits="AFBE.titlebanner" %>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr>
<td align="center" style="margin:0px;padding:0px;">
<asp:ImageMap ID="mapBanner" runat="server" BorderWidth="0px"
Height="82px" ImageUrl="../images/top_banner.jpg" Width="1000px"
style="margin:0px;padding:0px;">
<asp:RectangleHotSpot Left="125" Top="5" Right="200" Bottom="22"
NavigateUrl="about" AlternateText="About AFBE" />
<asp:RectangleHotSpot Left="206" Top="5" Right="347" Bottom="22"
NavigateUrl="foundation" AlternateText="Foundation Scholarship" />
<asp:RectangleHotSpot Left="353" Top="5" Right="421" Bottom="22"
NavigateUrl="contact.asp" AlternateText="Contact Us" />
<asp:RectangleHotSpot Left="425" Top="5" Right="511" Bottom="22"
NavigateUrl="affiliates" AlternateText="Affiliate Login" />
<asp:RectangleHotSpot Left="857" Top="37" Right="896" Bottom="65"
NavigateUrl="" AlternateText="English Version" />
<asp:RectangleHotSpot Left="902" Top="37" Right="940" Bottom="65"
NavigateUrl="espanol" AlternateText="Spanish Version" />
<asp:RectangleHotSpot Left="946" Top="37" Right="984" Bottom="65"
NavigateUrl="francis" AlternateText="French Version" />
</asp:ImageMap>
<asp:ImageMap ID="mapNavBanner" runat="server" Width="1000" Height="19"
BorderWidth="0" ImageUrl="../images/navigation.jpg"
style="margin:0px;padding:0px;">
<asp:RectangleHotSpot Left="7" Top="1" Right="188" Bottom="16"
NavigateUrl="exposure" AlternateText="National Exposure Service" />
<asp:RectangleHotSpot Left="203" Top="1" Right="323" Bottom="16"
NavigateUrl="athletes" AlternateText="Athlete Database" />
<asp:RectangleHotSpot Left="336" Top="1" Right="428" Bottom="16"
NavigateUrl="tournaments" AlternateText="Tournaments" />
<asp:RectangleHotSpot Left="442" Top="1" Right="555" Bottom="16"
NavigateUrl="summercamps" AlternateText="Summer Camps" />
<asp:RectangleHotSpot Left="569" Top="1" Right="659" Bottom="16"
NavigateUrl="coaches" AlternateText="For Coaches" />
<asp:RectangleHotSpot Left="673" Top="1" Right="858" Bottom="16"
NavigateUrl="opportunities" AlternateText="Employment Opportunities" />
<asp:RectangleHotSpot Left="873" Top="1" Right="917" Bottom="16"
NavigateUrl="" AlternateText="Home" />
</asp:ImageMap>
</td>
</tr>
</table>


The exact code that this renders is:


<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr>
<td align="center" style="margin:0px;padding:0px;">
<img id="titlebanner1_mapBanner" src="images/top_banner.jpg"
usemap="#ImageMaptitlebanner1_mapBanner"
style="border-width:0px;height:82px;width:1000px;margin:0px;padding:0px;"
/><map name="ImageMaptitlebanner1_mapBanner">
<area shape="rect" coords="125,5,200,22" href="usercontrols/about"
title="About AFBE" alt="About AFBE" /><area shape="rect"
coords="206,5,347,22" href="usercontrols/foundation" title="Foundation
Scholarship" alt="Foundation Scholarship" /><area shape="rect"
coords="353,5,421,22" href="usercontrols/contact.asp" title="Contact Us"
alt="Contact Us" /><area shape="rect" coords="425,5,511,22"
href="usercontrols/affiliates" title="Affiliate Login" alt="Affiliate Login"
/><area shape="rect" coords="857,37,896,65" href="" title="English Version"
alt="English Version" /><area shape="rect" coords="902,37,940,65"
href="usercontrols/espanol" title="Spanish Version" alt="Spanish Version"
/><area shape="rect" coords="946,37,984,65" href="usercontrols/francis"
title="French Version" alt="French Version" />
</map>
<img id="titlebanner1_mapNavBanner" src="images/navigation.jpg"
usemap="#ImageMaptitlebanner1_mapNavBanner"
style="border-width:0px;height:19px;width:1000px;margin:0px;padding:0px;"
/><map name="ImageMaptitlebanner1_mapNavBanner">
<area shape="rect" coords="7,1,188,16" href="usercontrols/exposure"
title="National Exposure Service" alt="National Exposure Service" /><area
shape="rect" coords="203,1,323,16" href="usercontrols/athletes"
title="Athlete Database" alt="Athlete Database" /><area shape="rect"
coords="336,1,428,16" href="usercontrols/tournaments" title="Tournaments"
alt="Tournaments" /><area shape="rect" coords="442,1,555,16"
href="usercontrols/summercamps" title="Summer Camps" alt="Summer Camps"
/><area shape="rect" coords="569,1,659,16" href="usercontrols/coaches"
title="For Coaches" alt="For Coaches" /><area shape="rect"
coords="673,1,858,16" href="usercontrols/opportunities" title="Employment
Opportunities" alt="Employment Opportunities" /><area shape="rect"
coords="873,1,917,16" href="" title="Home" alt="Home" />
</map>
</td>
</tr>
</table>


I don't know why it would help, but the two images are located at:

http://www.mosaicinc.net/clients/afbe/images/top_banner.jpg
http://www.mosaicinc.net/clients/afbe/images/navigation.jpg

The width & height that I specify in my code (1000x82 & 1000x19) are
correct, and I also tried not specifying a width & height, but neither made
any difference. The only working solution I have found is to write the html
by hand and place a <br/> between the img & map tags. If you go to:

http://www.mosaicinc.net/clients/afbe/

you can see the two imagemaps at the top without any empty space between
them. But if you look at the source code, you will notice that there is a
<br> tag between the img and map tags (the page that is currently there is
written in Classic ASP, I need to convert it to ASP.NET, and I would rather
use the ImageMap control than manually write the html). If there is any
other information that might help you help me find a solution, let me know.
Thanks.
 
Here's the solution I tried to explain to you...

<div id="MapBanner">
<asp:ImageMap ID="mapBanner" runat="server" ImageUrl="top_banner.jpg"
ImageAlign="Bottom" Height="82px">
</asp:ImageMap>
</div>

<div id="MapNavBanner" style="margin:-.25em 0 0 0;">
<asp:ImageMap ID="mapNavBanner" runat="server" ImageUrl="navigation.jpg"
ImageAlign="Top" Height="19px">
</asp:ImageMap>
</div>


<%= Clinton Gallagher
NET csgallagher AT metromilwaukee.com
URL http://clintongallagher.metromilwaukee.com/
MAP 43°2'17"N 88°2'37"W : 43°2'17"N 88°2'37"W
 
Not to sound unappreciative, but I don't like that idea. That idea had
occurred to me, but because it is so important that these two ImageMaps are
EXACTLY touching (not almost touching, not overlapping) and different
browsers and versions would require a different value for the adjustment, I
want something that either uses 0 or does not require an adjustment. At the
moment, I feel I may need to write the imagemap html by hand due to my time
constraints, but I would like to let Microsoft know about this problem
(unless there is a way around it which works that we haven't found). I
haven't looked into it, but I have seen mentionings of a .NET 3.0 in certain
places on the web. I am wondering if this problem is fixed in that. Thanks.
 
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