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RadFilter will not keep it's state between postbacks

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Filter

This is a migrated thread and some comments may be shown as answers.

Bron asked on 11 Jun 2011, 05:50 AM

<%@ 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.

4 Answers, 1 is accepted

answered on 16 Jun 2011, 08:17 AM

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

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