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Editorial Team
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Asked: 2026-05-15T01:02:04+00:00

I tried the MVCScriptManager from CodePlex and it seems to work well until you

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I tried the MVCScriptManager from CodePlex and it seems to work well until you try to use it in conjunction with a ViewUserControl.

When it is used in this type of scenario it gives the following error.

A ScriptManager with RenderMode set to
Master is not present. Such
ScriptManager must precede one with
RenderMode set to Slave.

There is a ScriptManager with render mode set to “Master” in the header of the Site.Master page but it appears that the partial views are rendered first.

Is there any way to work around this problem?

=== Master Page ====

<%@ Master Language="C#" Inherits="System.Web.Mvc.ViewMasterPage" %>

<!DOCTYPE html PUBLIC 
"-//W3C//DTD XHTML 1.0 Strict//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title><asp:ContentPlaceHolder ID="TitleContent" runat="server" /></title>
    <link href="../../Content/Site.css" rel="stylesheet" type="text/css" />
    <mvc:ScriptManager ID="ScriptManager1" RenderMode="Master" 
    runat="server" EnableHttpCompression="true" EnableHttpExpiration="true"
    HttpExpirationInDays="30">
        <Scripts>
            <mvc:ScriptReference EnableCrunching="true" 
             Path="~/Scripts/jquery-1.3.2.js" />
        </Scripts>
    </mvc:ScriptManager>
</head>

<body>
    <div class="page">

        <div id="header">
            <div id="title">
                <h1>My MVC Application</h1>
            </div>

            <div id="logindisplay">
                <% Html.RenderPartial("LogOnUserControl"); %>
            </div>

==== LogOnUserControl.ascx ====

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl" %>
<%
    if (Request.IsAuthenticated) {
%>
        Welcome <b><%= Html.Encode(Page.User.Identity.Name) %></b>!
        [ <%= Html.ActionLink("Log Off", "LogOff", "Account") %> ]
<%
    }
    else {
%> 
        [ <%= Html.ActionLink("Log On", "LogOn", "Account") %> ]
<%
    }
%>

    <mvc:ScriptManager ID="ScriptManager1" RenderMode="Slave" 
     runat="server" EnableHttpCompression="true" 
     EnableHttpExpiration="true" HttpExpirationInDays="30">
        <Scripts>
            <mvc:ScriptReference EnableCrunching="true"
             Path="~/Scripts/SampleScript_LoginViewUserControl.js" />
        </Scripts>
    </mvc:ScriptManager>
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1 Answer

  1. Editorial Team

    I have been using the MVC ScriptManager for a while now and the answer is no, you cannot add it to a partial view. You must define the necessary script includes in a .ASPX View.

    <mvc:ScriptManager RenderMode="Slave" runat="server" EnableHttpExpiration="true" HttpExpirationInDays="30">
    <Scripts>
        <mvc:ScriptReference Path="~/Content/Js/jquery/jquery.jgrowl.min.js" />
        <mvc:ScriptReference Path="~/Content/Js/core/script.min.js" />
        <mvc:ScriptReference Path="~/Content/Js/core/json2.min.js" />
    </Scripts>
</mvc:ScriptManager>
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