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'_currentFilterTimeoutID' is null or not an object

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

larry reames asked on 09 May 2011, 03:15 PM

I have a RadGrid that is throwing the error '_currentFilterTimeoutID' is null or not an object when a value is typed into the filter box. If I remove FilterDelay, ther error does not occur though neither does the filter.

Below is the radgrid with the RadWindow wrapper.

<telerik:RadWindow ID="GLLookupWindow" runat="server" Behaviors="Close" Width="900" Height="700" OnClientClose="UnhideIframe_OnClientClose">

<ContentTemplate>

<asp:Button ID="hiddenButton" OnClientClick="return false;" runat="server" style="display:none" visible="false" />

<asp:Panel runat="server" ID="pnlGLLookup" Visible="true" TabIndex="-1">

<telerik:RadGrid AutoGenerateColumns="False" ID="GLLookup" OnItemCommand ="GLLookup_ItemCommand" AllowFilteringByColumn ="true" OnItemCreated="GLLookup_ItemCreated" EnableLinqExpressions="false"

DataSourceID="SqlDataSourceGLLookupwindow" AllowSorting="true" runat="server" PagerStyle-AlwaysVisible="true" AllowPaging="true" PageSize ="20">

<GroupingSettings CaseSensitive="false" />

<MasterTableView DataKeyNames="GCMGRP,GCACCT,GCSACT,GCDEPT,GCDESC" AutoGenerateColumns="false" AllowFilteringByColumn="True" >

<PagerStyle Mode="NumericPages" PageButtonCount="10" />

<Columns>

<telerik:GridBoundColumn SortExpression="GCMGRP" HeaderText="Major" DataField="GCMGRP" UniqueName="GCMGRP" HeaderButtonType="TextButton"

AllowFiltering="true" CurrentFilterFunction="EqualTo" AutoPostBackOnFilter="false" ShowFilterIcon="false" FilterDelay="4000"

HeaderStyle-VerticalAlign="Bottom" HeaderStyle-HorizontalAlign="Center" ItemStyle-HorizontalAlign="Center"/>

<telerik:GridBoundColumn HeaderText="Acct" DataField="GCACCT" UniqueName="GCACCT" AllowFiltering="true"

SortExpression="GCACCT" HeaderStyle-HorizontalAlign="Center" ItemStyle-HorizontalAlign="Center"

HeaderStyle-VerticalAlign="Bottom"

CurrentFilterFunction="EqualTo" AutoPostBackOnFilter="false" ShowFilterIcon="false" FilterDelay="4000" />

<telerik:GridBoundColumn HeaderText="Sub" DataField="GCSACT" UniqueName="GCSACT" AllowFiltering="true"

SortExpression="GCSACT" HeaderStyle-HorizontalAlign="Center" ItemStyle-HorizontalAlign="Center"

HeaderStyle-VerticalAlign="Bottom"

CurrentFilterFunction="EqualTo" AutoPostBackOnFilter="false" ShowFilterIcon="false" FilterDelay="4000" />

<telerik:GridBoundColumn HeaderText="Dept/Loc" DataField="GCDEPT" UniqueName="GCDEPT" AllowFiltering="true"

SortExpression="GCDEPT" HeaderStyle-HorizontalAlign="Center" ItemStyle-HorizontalAlign="Center"

HeaderStyle-VerticalAlign="Bottom"

CurrentFilterFunction="EqualTo" AutoPostBackOnFilter="false" ShowFilterIcon="false" FilterDelay="4000" />

<telerik:GridBoundColumn HeaderText="Description" DataField="GCDESC" UniqueName="GCDESC" AllowFiltering="true"

SortExpression="GCDESC" HeaderStyle-HorizontalAlign="Center" ItemStyle-HorizontalAlign="Center"

HeaderStyle-VerticalAlign="Bottom"

CurrentFilterFunction="Contains" AutoPostBackOnFilter="false" ShowFilterIcon="false" FilterDelay="4000" />

</Columns>

<ItemStyle Wrap="false" />

<PagerStyle Mode="NumericPages" AlwaysVisible="true">

</PagerStyle>

</MasterTableView>

<ClientSettings EnablePostBackOnRowClick="true" >

</ClientSettings>

</telerik:RadGrid>

<asp:Button ID="clrFilters" runat="server" Text="Clear filters" OnClick="clrFilters_Click" />

</asp:Panel>

</ContentTemplate>

</telerik:RadWindow>

AHIA,
LarryR....

9 Answers, 1 is accepted

answered on 12 May 2011, 09:07 AM

testpage.zip

Hello larry,

I cannot reproduce this error you are getting. I am attaching the test page I used that is based on the markup you have posted. Try to reproduce this issue in it and let me know what steps we need to take so that we can reproduce it too.

Veli
the Telerik team

Browse the vast support resources we have to jump start your development with RadControls for ASP.NET AJAX. See how to integrate our AJAX controls seamlessly in SharePoint 2007/2010 visiting our common SharePoint portal.

answered on 23 Jun 2011, 09:57 AM

Hi,

I am re-posting the reply from the ticket in this thread:

Thank you for the test project. The reason for this error is the way your user control gets re-initialized on postback. You are recreating your user control in Page_Load. This point in the page life cycle is too late for re-initializing dynamic controls. Controls created programmatically need to be recreate in the Init phase of the page. If I change the Page_Load to Page_Init, the error is gone. The relation of this issue to the javascript error you are getting is that, because ViewState cannot be properly restored to your user control (and to RadGrid inside), the control cannot properly manage its state. The result is that the client-side script is not able to find the GridTableView client object that is responsible for applying the filter as you type. Hence the null reference error, indicating the GridTableView object is null and its _currentFilterTimeoutID field cannot be evaluated.

Greetings,
Veli
the Telerik team