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Posted 13 Jul 2011

Hyperlinked Images in ASP.NET GridView

, 7 Aug 2011 CPOL
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3 different techniques of adding hyperlinked image to ASP.NET GridView control in data-centric RIA
This is an old version of the currently published tip/trick.

Problem to solve

Pretty common development scenario is to place inside GridView control the image corresponding to some "Image_URL" value stored in the data field of underlying database, which is "hyperlinked" to another "Target_URL" also stored in the database. Image OnClick event should open the target web page. If image is missing then the alternative text should serve as a hyperlinked text.

Three possible solutions pertinent to the ASP.NET GridView control are described below:

1. TemplateField with Hyperlink and img element

Listing 1

        <asp:HyperLink runat="server" NavigateUrl='<%# Eval("Wiki_URL") %>'
            <img src='<%# Eval("Image_URL") %>'  alt="Read online" />

2. TemplateField with ImageButton

This technique, even though it provides the minimum coding and fairly robust results, is not recommended as it uses PostBack and, thus, requires the server "round-trip", dramatically degrading the responsiveness of RIA and negatively impacting the overall user experience (it's brought here mostly for didactic purpose).

Listing 2

            <asp:ImageButton runat="server" ImageUrl='<%# Eval("Image_URL") %>'
            PostBackUrl='<%# Eval("Target_URL") %>' AlternateText="Read online" />

3. TemplateField with ImageButton and Javascript added to onClick

This method requires some additional Javascript coding, but provides maximum flexibility in terms of formatting the target window to be opened on image click event:

Listing 3

 <asp:ImageButton ID="ImageButton1" runat="server" ImageUrl='<%# Eval("Image_URL") %>' 
                        OnClientClick='<%# String.Format("javascript:return openTargetURL(\"{0}\")", Eval("Target_URL")) %>'  AlternateText="Read online" />

Javascript snippet to be added to head section

This sample Javascript code snippet allows opening target web page in new browser window with customized appearance set programmatically:
<script type="text/javascript">
    function openTargetURL(url) 
    {, "newWindow", "resizable=1,menubar=0,toolbar=0,scrollbars=1"); }


ASP.NET GridView Hyperlinked image technique as described above has been used in Online Music Library: click on the sample snapshot shown below to see the working demo:
Music Library implemented as nested GridView controls

Design Notes: Server side Image rendering

Be aware that pertinent to Listing 1, the image is rendered as "img" element, while in two other cases it is rendered as "input type="image" element. Corresponding sample CSS3 code snippet in Listing 4 shows the best practices addressing these differences.

Listing 4

<style type="text/css">
    /* image rendered as img element within table */
    img { width:200px; }
    /* image rendered as <input> element within table */
    input[type="image"] {width:200px; }

Image decoration via HTML5/CSS3

Various aesthetic enhancement techniques, namely single and double borders, borders with inset shadows and color gradients could be applied to the image as described in [1].


  1. Add Image Borders using HTML5/CSS3[^]

  2. Online Slide Show as pure HTML5 / CSS3 solution: NO Javascript[^]


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

President Infosoft International Inc
United States United States
Dr. Alexander Bell is a seasoned full-stack Software Engineer (Win/Web/Mobile). He holds PhD in EE/IT, authored 37 inventions and published 300+ technical articles. Currently focused on HTML5/CSS3, Javascript, .NET/WPF/C#, Angular.js, SQL, 'Big Data', Machine Learning, AI, IoT. Alex participated in App Innovation Contests (AIC 2102/2013) with multiple winning submissions. Portfolio samples:

  1. Real-time NY Bus Tracking Web App (IoT)

  2. Integrated Sensors Hub (IMU) Testing Web Page

  3. Semaphon™ semantic phone num-to-text converter

  4. Educational Web Portal

  5. Free Online NY Payroll Tax Calculator

  6. WebTV powered by YouTube Player powered by .NET API (#1 on Google)

  7. Top-50 Digital Cameras (by iMark-DCAM rating engine)

  8. Pure CSS3 Slide Show

  9. Inflation Calculator

  10. Multilingual Geocoder with Interactive Map

  11. Online Semantic Analyzer (Concordance Calculator)

  12. Advanced CSS3 Table Formatting

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Comments and Discussions

Discussions posted for the Published version of this article. Posting a message here will take you to the publicly available article in order to continue your conversation in public.
GeneralMy vote of 3 Pin
ChenShaoHsi12-Feb-15 2:22
memberChenShaoHsi12-Feb-15 2:22 
QuestionNice Article Pin
khaliqhamid20-May-14 0:56
memberkhaliqhamid20-May-14 0:56 
AnswerRe: Nice Article Pin
DrABELL21-May-14 3:09
professionalDrABELL21-May-14 3:09 
GeneralReason for my vote of 3 sdfghjkl Pin
Jailendra Singh27-Nov-11 19:07
memberJailendra Singh27-Nov-11 19:07 
GeneralRe: Sorry, but I did not understand your message. Pin
DrABELL14-Dec-11 1:43
memberDrABELL14-Dec-11 1:43 
GeneralReason for my vote of 5 great! Pin
Marcio_Coelho27-Sep-11 10:57
memberMarcio_Coelho27-Sep-11 10:57 
GeneralRe: Thanks! Pin
DrABELL27-Sep-11 11:40
memberDrABELL27-Sep-11 11:40 
GeneralReason for my vote of 4 Good Article Pin
mandar13054-Aug-11 22:45
membermandar13054-Aug-11 22:45 
GeneralReason for my vote of 5 nice Pin
Monjurul Habib27-Jul-11 22:17
memberMonjurul Habib27-Jul-11 22:17 
GeneralRe: Thanks! Pin
DrABELL28-Jul-11 3:07
memberDrABELL28-Jul-11 3:07 
GeneralReason for my vote of 5 Good one Alex. Pin
thatraja14-Jul-11 7:20
mvpthatraja14-Jul-11 7:20 
GeneralRe: Many thanks! Pin
DrABELL14-Jul-11 8:58
memberDrABELL14-Jul-11 8:58 

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