RadFilter will not keep it's state between postbacks

[Bron]

<%@ Control Language="VB" AutoEventWireup="true" CodeFile="SegmentationCreator.ascx.vb" Debug="true"
    Inherits="Controls_SegmentationCreator" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
<telerik:RadAjaxPanel ID="RadAjaxPanel1" runat="server">
    <telerik:RadFilter ID="RadFilter1" runat="server"
        CssClass="RadFilter RadFilter_Default" ExpressionPreviewPosition="Bottom" ShowApplyButton="false" AllowFilterOnBlur="true">
        <FieldEditors>
            <telerik:RadFilterTextFieldEditor DisplayName="text1" FieldName="textfield" TextBoxWidth="120" />
            <telerik:RadFilterNumericFieldEditor DisplayName="number1" FieldName="numberField" />
            <telerik:RadFilterBooleanFieldEditor DataType="System.Boolean" DisplayName="check1" FieldName="bitField" />
            <telerik:RadFilterDateFieldEditor DataType="System.DateTime" DisplayName="date1" FieldName="dateField" />
        </FieldEditors>
    </telerik:RadFilter>
    <ul>
    <telerik:RadListView ID="RadListView1" runat="server" DataSourceID="sqlData1">
        <ItemTemplate>
        <li><%# Eval("text1")%></li>
        </ItemTemplate>
    </telerik:RadListView>
    </ul>
    <asp:SqlDataSource ID="sqlData1" runat="server" ConnectionString="<%$ ConnectionStrings:FEI%>" SelectCommand="SELECT TOP 10 Email.email as text1, 1 as number1, 0 as check1, GETDATE() as date1 FROM Email">
    </asp:SqlDataSource>
    <asp:HiddenField id="hiddenQueryText" runat="server" />
</telerik:RadAjaxPanel>

Every time I click on add field or anything it just reverts to the first-time load state.  There is nothing in the code-behind file.  The only other odd thing is that If I add the RadScriptManager to the the ascx, the page gives an error that "Only one instance of a ScriptManager can be added to the page."  This control above is being added to the page using Page.LoadControl("path/nameof.ascx") so I don't really have control over that part.

[Bron]

Anyone??

[Mira]

Hello Bron,

Only one instance of the ScriptManager control can be added to the page. The page can include the control directly, or indirectly inside a nested component such as a user control, content page for a master page, or nested master page. If a page already contains a ScriptManager control, but a nested or parent component needs additional features of the ScriptManager control, the component can include a ScriptManagerProxy control. For example, the ScriptManagerProxy control enables you to add scripts and services that are specific to nested components.
Please examine this article for additional information.

I hope this helps.

Kind regards,
Mira
the Telerik team

[Bron]

That didn't help although I don't get the srcript manager error.

[Iana Tsolova]

Hello Bron,

Can you try disabling ajax for the RadAjaxPanel in the user controls and see if it makes any difference?
This can be done by setting the RadAjaxPanel EnableAjax property to false.

Kind regards,
Iana
the Telerik team