ASP.net scriptmanager and AJAX control

Question

im making a username availability check in ASP.net using ajax updatepanel, but i keep getting the following error

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

im using the create user wizard, to create a new user but i want to check if the user already exists, i have the following code in the aspx file

<asp:UpdatePanel runat="server" ID="UserNameUP">
 <ContentTemplate>
 <asp:TextBox ID="UserName" runat="server" Width="200px" AutoPostBack="true"  OnTextChanged="Username_Changed"></asp:TextBox></ContentTemplate> </asp:UpdatePanel><br />

but i keep getting that error, can any one help

thanks

Corey Sunwold · Accepted Answer · 2010-03-13 13:17:58Z

1

Before your update panel, make sure you have a scriptmanager:

   <asp:ScriptManager id="ScriptManager1" runat="server">
   </asp:ScriptManager>

answered Mar 13, 2010 at 13:17

Corey Sunwold

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4 Comments

c11ada Over a year ago

do i not put anything in the asp:ScriptManager ?? im getting a new error now "Only one instance of a ScriptManager can be added to the page." but the thing is i dont have another instance !!

Corey Sunwold Over a year ago

Look through the aspx page and double check that there isn't a second ScriptManager somewhere below your update panel.

c11ada Over a year ago

i moved the asp:ScriptManager to the top of the form, just after <form id="form1" runat="server">, but now im having a problem with the OnTextChanged="Username_Changed" not being called, any ideas ??

Corey Sunwold Over a year ago

If you read here: msdn.microsoft.com/en-us/library/… the postback will only occur when the textbox loses focus. It won't postback everytime the value of the textbox changes.

Jammin · Accepted Answer · 2010-03-13 13:47:20Z

0

Do you have a script manager inside a master page? That can cause the "Only one instance of a ScriptManager can be added to the page" error?

Or, if its DNN, there is one on each "page" by default.

answered Mar 13, 2010 at 13:47

Jammin

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