after adding script manager on master page getting -Only one instance of a ScriptManager can be added to the page.

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I am using ajax toolkit in my project. My project is having a master page and i am inheriting this master page in my web pages.I am using Script manager on every page but now requirement came to display a real time clock also on the master page.I had written the code using Timer to display real time clock on master page but i am getting error "Only one instance of a ScriptManager can be added to the page. ".

How to fix this problem as i don't want to remove script manager from the webpages.

Posted 19-Jul-12 21:39pm

Dharmenrda Kumar Singh

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Mits Machhi · Answer 1 · 2012-07-19T21:42:00

Solution 1

Try to Add EventValidation="False" to Top of Inherited Page.

<![CDATA[<% @Page Language="C#" MasterPageFile="~/user_master.master" AutoEventWireup="true" CodeFile="xx.aspx.cs" Inherits="xx_xx" Title="xx" EnableEventValidation="false" %>]]>

Posted 19-Jul-12 21:42pm

Mits Machhi

shahcool143 · Answer 2 · 2012-07-19T23:48:00

Solution 2

keep only scriptmanager in masterpage.. and remove from content page...

Posted 19-Jul-12 23:48pm

shahcool143