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Unknown server tag ‘asp:ListView’

November 8th, 2008 by Remy Blaettler

If you get this message after you upgraded to ASP.NET 3.5 and possible SP1, make sure you have the following settings correctly in your web.config file:

  

<assemblies>
  <add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

<pages>
  <controls>
    <add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
    <add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
  </controls>
</pages>

And by the way, there is no ASP.NET 3.5 Version on the ASP.NET tab in the IIS 6.0. It’s still running on 2.0. Just in case you were trying to figure out what was wrong with your installation (I was too).

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  4. Find checked Radio Button in ASP.NET
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One Comment to “Unknown server tag ‘asp:ListView’”

  • Yep says on April 23rd, 2010 at 5:52 pm :

    Awesome, just solved my problem. Thanks. :)

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This entry was posted on Saturday, November 8th, 2008 at 3:12 am and is filed under ASP.NET, Ajax, C#, IIS. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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