ScriptManager required even though it is present

Question

i am getting following error when i am running AJAX enabled ASP.Net application

The control with ID 'FilteredTextBoxExtender1' requires a ScriptManager on the page. The ScriptManager must appear before any controls that need it.

even though i have ScriptManager in my page

what wrong i am doing please give suggestions

thanks in advance

   <form id="form1" runat="server">
    <asp:scriptmanager id="ScriptManager1" runat="server" />
    <div>
        <cc1:filteredtextboxextender id="FilteredTextBoxExtender1" targetcontrolid="textbox1"
            filtertype="Numbers" runat="server">  </cc1:filteredtextboxextender>
        <asp:textbox id="TextBox1" runat="server"></asp:textbox>
    </div>
    </form>

Answer 1

You say "even though i have ScriptManager in my page" but did you also notice "must appear before any controls that need it" ?

Verify the order, the ScriptManager should be 1 of the first elements inside the <Form> tag.

Edit:

That TextBoxExtender is from the Ajax toolkit, that toolkit has its own ScripManager. Look in the Toolbox window.

Answer 2

Place ScriptManager right before UpdatePanel

Answer 3

what version of the toolkit? if latest, u need toolkitscriptmanager instead of "normal" scriptmanager