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    <p>Just for completeness...</p> <p>The Gridview renders out a HTML table and while it is accessible by Jquery / Javascript to harvest its data, it is easier to simply create an endpoint within your ASP.NET application that can return JSON data. Here are some approaches, my personal favourite would be jQuery to ASP.NET MVC as you can create a controller to handle and render HTML output and JSON data to same model.</p> <ol> <li>ASP.NET MVC : <a href="http://dotnet.dzone.com/articles/aspnet-mvc-jquery-json" rel="nofollow noreferrer">End to end Jquery</a>, Another example using <a href="http://shashankshetty.wordpress.com/2009/03/04/using-jsonresult-with-jquery-in-aspnet-mvc/" rel="nofollow noreferrer">JsonResult</a> object and a <a href="http://www.codeproject.com/Articles/305308/MVC-Techniques-with-JQuery-JSON-Knockout-and-Cshar" rel="nofollow noreferrer">broader example</a></li> <li>Create a WCF Service. Here you can create a webservice that can run independantly from your website, however, authentication can be a bind when compared to ASP.NET MVC. Examples are from <a href="http://msdn.microsoft.com/en-us/library/bb628607.aspx" rel="nofollow noreferrer">MSDN</a>, using <a href="http://dotnetbyexample.blogspot.com/2008/02/calling-wcf-service-from-javascript.html" rel="nofollow noreferrer">a simple DataContract</a> (that interprets between .NET objects and what should be outputted (lookup Data Transfer Objects [DTO] for further reading). Here's a <a href="http://www.codeproject.com/Articles/33234/A-beginner-s-guide-for-consuming-a-WCF-service-in" rel="nofollow noreferrer">walkthrough</a> as well.</li> <li>Using WebMethod within your code behind. Probably the less impactful for old school ASP.NET developers where you can define methods with the 'Webmethod' attribute that will act as a Javascript Endpoint. It can be a bit fiddly (especially compared to MVC) but may take less time on the implementation. Examples are include <a href="http://www.seoasp.net/post/2008/07/16/jQuery-To-Call-ASPNET-Page-Methods-and-Web-Services.aspx" rel="nofollow noreferrer">simple calls</a> and <a href="http://trentgardner.net/net/asp-net-webmethods-with-jquery-and-ajax/" rel="nofollow noreferrer">this</a> and something a bit <a href="http://weblogs.asp.net/craigshoemaker/archive/2008/11/07/using-jquery-to-call-asp-net-ajax-page-methods-by-example.aspx" rel="nofollow noreferrer">more complex</a>. One thing I would mention is that you do not get any automatic Json serialising (I think) with this technique and you may have to perform the serialisation yourself as shown in this <a href="https://stackoverflow.com/questions/7178839/how-to-pass-a-timespan-object-to-a-wcf-method-using-json">post</a>.</li> </ol> <p>HTH</p>
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    1. COthanks. Today I came across HTTP Handlers and using .ASHX which seems to be exactly what I needed.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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