ScriptManager conflicts

[Graham]

I have a webform with an aspscripmanager and and radsciptmanager but for some reason they dont like working together at all. My code is below:

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">   
    <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>

    <div style="width: 100%; height: 100%">
        <asp:UpdatePanel ID="UpdatePanel1" runat="server">
            <ContentTemplate>
                <div id="divImage" style="display:none">
                    <asp:Image ID="img1" runat="server" ImageUrl="~/Image/ajax-loader3.gif" />
                    Processing....
                </div>
                <asp:Button ID="btnMP1Show" runat="server" Text="Show MP1" style="display:none"/>
                <asp:Panel ID="Panel1" runat="server" CssClass="panel001">
                    <asp:Button ID="btnMP3OK" runat="server" Text="Return" OnClick="btnMP3OK_Click"/>
                    <asp:Button ID="btnMP3Manual" runat="server" Text="Manual" OnClick="btnMP3Manual_Click" />                 
                    <h1>Flight Operational Quality Assurance</h1>
                    <div style="overflow:auto; border: 1px solid black; width: 100%; height: 500px">
                        <%--<telerik:RadScriptManager runat="server" ID="RadScriptManager1"></telerik:RadScriptManager>--%>
                        <telerik:RadSkinManager runat="server" ID="RadSkinManager1"  ShowChooser="true"></telerik:RadSkinManager>
                        <telerik:RadAjaxManager runat="server" ID="RadAjaxManager1"></telerik:RadAjaxManager>
                        <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server"></telerik:RadAjaxLoadingPanel>
                        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" ShowStatusBar="True" runat="server" AllowAutomaticInserts="True" AllowAutomaticUpdates="True" AllowFilteringByColumn="True" AllowSorting="True" AutoGenerateEditColumn="True" DataSourceID="ObjectDataSource1" EnableHeaderContextFilterMenu="True" EnableHeaderContextMenu="True" ShowFooter="True" ShowGroupPanel="True">
                            <PagerStyle Mode="NumericPages"></PagerStyle>
                            <GroupingSettings CollapseAllTooltip="Collapse all groups" />
                            <ClientSettings AllowDragToGroup="True" AllowKeyboardNavigation="true" EnablePostBackOnRowClick="true">
                                <Selecting AllowRowSelect="true"></Selecting>
                            </ClientSettings>                       
                            <MasterTableView EnableHierarchyExpandAll="true" AutoGenerateColumns="False" DataSourceID="ObjectDataSource1" AllowMultiColumnSorting="True">
                                <DetailTables>
                                    <telerik:GridTableView EnableHierarchyExpandAll="true" DataKeyNames="SectorKey" DataSourceID="ObjectDataSource2" Width="100%" runat="server">
                                        <ParentTableRelation>
                                            <telerik:GridRelationFields DetailKeyField="SectorKey" MasterKeyField="SectorKey"></telerik:GridRelationFields>
                                        </ParentTableRelation>
                                        <Columns>

//Confidential Code Hidden

                                        </Columns>
                                    </telerik:GridTableView>
                                </DetailTables>
                                <Columns>

// Confidential Code Hidden

                                </Columns>
                            </MasterTableView>
                            <PagerStyle Mode="NextPrevAndNumeric"></PagerStyle>
                            <FilterMenu RenderMode="Lightweight">
                            </FilterMenu>
                            <HeaderContextMenu RenderMode="Lightweight">
                            </HeaderContextMenu>
                        </telerik:RadGrid>

                        <asp:ObjectDataSource ID="ObjectDataSource1" runat="server"
//Confidnential Code Hidden
                        </asp:ObjectDataSource>
                    </div>
                </asp:Panel>
            </ContentTemplate>
        </asp:UpdatePanel>

    </div>
</asp:Content>

[Marin Bratanov]

Hello Graham,

There can only be one instance of a ScriptManager control on any given page. Thus, you must use either the asp:ScriptManage, OR the telerik:RadScriptManager.

Also, the script manager must be the very first control at the beginning of the <form>, so placing it inside the UpdatePanel will break your pages.

Regards,

Marin Bratanov
Telerik by Progress