.Net, ASP.Net, C#, VB.net, SQL Server, Xml, CSS, Design Patterns related tips, tricks, code snippets, articles, links, thoughts, etc. from Binu & Subi Thayamkery.

Binu Thayamkery is a seasoned software architect with more than 13 years of experience in developing enterprise grade connected systems using Microsoft Technologies. In his current position as a lead consultant-solution architect with Prudential Financial, he is working on architecture of next generation investment reporting framework using .net 3.5/WCF/AJAX, etc. He holds a Masters Degree in Computer Science from Colorado State University. Subi Thayamkery is an experienced software developer with more than 8 years of developing various application software systems ranging from workflow automation systems to compliance management tools. She currently works as a technology consultant for Prudential Financial where she helps develop a new system for corportate governance department. She holds an Electrical Engineering degree from New Jersey Institute of Technology.

Friday, May 02, 2008

ASP.Net AJAX - Growing Pain !

I have a project where I use AJAX Extensions Ver 1.0, I am using Visual Studio 2008 and my target .Net Framework Ver is 3.0, All of a sudden I started getting this error!


The type 'System.Web.UI.UpdatePanel' exists in both 'c:\WINDOWS\assembly\GAC_MSIL\System.Web.Extensions\3.5.0.0__31bf3856ad364e35\System.Web.Extensions.dll' and 'c:\WINDOWS\assembly\GAC_MSIL\System.Web.Extensions\1.0.61025.0__31bf3856ad364e35\System.Web.Extensions.dll'

Googling the error, got pointers to look at "References" and "Web.config" to ensure that there is no reference to System.Web.Extensions ver 3.5, did that .... and much more... drove me nuts for a good couple of hours.

And at last found this in one of my test pages !!!


<%@ Register assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral,

PublicKeyToken=31bf3856ad364e35" namespace="System.Web.UI.WebControls" tagprefix="asp" %>



Removing this page directive made all the difference, project started compiling fine again...
and I can have a peaceful weekend !

Cheers!
Posted by Binu Thayamkery at 4:24 PM 3 comments
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Copyright 2008 Binu Thayamkery/Subi Thayamkery. All code snippets, samples provided AS-IS. Use at your own risk !