UpdatePanel is not a known element

Posted on 2007-07-26
Last Modified: 2013-12-20
I'm getting the abovementioned error in a detail form under a master template. The code still compiles, but nearly every control has the "is not a known element" error, i.e. contenttemplate,   textbox, GridView, table, TBODY, TR, TDdiv, SelectParameters, Parameter, Font, DropDownList, ListItem, etc.

All of these controls are in an UpdatePanel.

Is this because I'm running AJAX ?. I have ScriptManager in MasterPage.master.
Question by:Netlink2
    LVL 22

    Accepted Solution

    LVL 1

    Author Comment

    VS2005 Service Pack 1 did the trick, thanks

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