Uncaught TypeError: Cannot set property 'control' of undefined

[Dan]

I am getting this script error in Chrome 67.0.3396.99 when I click a button to edit a column of RadGrid using a custom form template with EditFormType="WebUserControl".  None of the RadNumericTextBox controls seem to work because of the error. 

I have EditMode=PopUp and RenderMode="Auto" which works fine in standard desktop size/mode where I get a popup.  However, I get this error simulating mobile devices when an inline form is displayed instead of a popup:

Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=cntMain_sm1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a83235d95-72c5-4004-91af-69fb711f39d0%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2018.2.710.45%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3a8b7d6a7a-6133-413b-b622-bbc1f3ee15e4%3a16e4e7cd%3aed16cbdc%3af7645509%3a88144a7a%3a33715776%3a24ee1bba%3a56e9f55f%3a2a733ecd%3ab7778d6c%3ae085fe68%3af46195d3%3a2003d0b8%3a1e771326%3a2bef5fcc%3aa9b7ace7:6 Uncaught TypeError: Cannot set property 'control' of undefined
    at c.RadListBox.Sys.UI.Control (Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=cntMain_sm1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a83235d95-72c5-4004-91af-69fb711f39d0%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2018.2.710.45%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3a8b7d6a7a-6133-413b-b622-bbc1f3ee15e4%3a16e4e7cd%3aed16cbdc%3af7645509%3a88144a7a%3a33715776%3a24ee1bba%3a56e9f55f%3a2a733ecd%3ab7778d6c%3ae085fe68%3af46195d3%3a2003d0b8%3a1e771326%3a2bef5fcc%3aa9b7ace7:6)
    at Function.Type.initializeBase (Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=cntMain_sm1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a83235d95-72c5-4004-91af-69fb711f39d0%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2018.2.710.45%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3a8b7d6a7a-6133-413b-b622-bbc1f3ee15e4%3a16e4e7cd%3aed16cbdc%3af7645509%3a88144a7a%3a33715776%3a24ee1bba%3a56e9f55f%3a2a733ecd%3ab7778d6c%3ae085fe68%3af46195d3%3a2003d0b8%3a1e771326%3a2bef5fcc%3aa9b7ace7:6)
    at c.RadListBox.Telerik.Web.UI.RadWebControl (Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=cntMain_sm1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a83235d95-72c5-4004-91af-69fb711f39d0%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2018.2.710.45%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3a8b7d6a7a-6133-413b-b622-bbc1f3ee15e4%3a16e4e7cd%3aed16cbdc%3af7645509%3a88144a7a%3a33715776%3a24ee1bba%3a56e9f55f%3a2a733ecd%3ab7778d6c%3ae085fe68%3af46195d3%3a2003d0b8%3a1e771326%3a2bef5fcc%3aa9b7ace7:1062)
    at Function.Type.initializeBase (Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=cntMain_sm1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a83235d95-72c5-4004-91af-69fb711f39d0%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2018.2.710.45%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3a8b7d6a7a-6133-413b-b622-bbc1f3ee15e4%3a16e4e7cd%3aed16cbdc%3af7645509%3a88144a7a%3a33715776%3a24ee1bba%3a56e9f55f%3a2a733ecd%3ab7778d6c%3ae085fe68%3af46195d3%3a2003d0b8%3a1e771326%3a2bef5fcc%3aa9b7ace7:6)
    at c.RadListBox.b.ControlItemContainer (Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=cntMain_sm1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a83235d95-72c5-4004-91af-69fb711f39d0%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2018.2.710.45%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3a8b7d6a7a-6133-413b-b622-bbc1f3ee15e4%3a16e4e7cd%3aed16cbdc%3af7645509%3a88144a7a%3a33715776%3a24ee1bba%3a56e9f55f%3a2a733ecd%3ab7778d6c%3ae085fe68%3af46195d3%3a2003d0b8%3a1e771326%3a2bef5fcc%3aa9b7ace7:12987)
    at Function.Type.initializeBase (Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=cntMain_sm1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a83235d95-72c5-4004-91af-69fb711f39d0%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2018.2.710.45%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3a8b7d6a7a-6133-413b-b622-bbc1f3ee15e4%3a16e4e7cd%3aed16cbdc%3af7645509%3a88144a7a%3a33715776%3a24ee1bba%3a56e9f55f%3a2a733ecd%3ab7778d6c%3ae085fe68%3af46195d3%3a2003d0b8%3a1e771326%3a2bef5fcc%3aa9b7ace7:6)
    at new c.RadListBox (Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=cntMain_sm1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a83235d95-72c5-4004-91af-69fb711f39d0%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2018.2.710.45%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3a8b7d6a7a-6133-413b-b622-bbc1f3ee15e4%3a16e4e7cd%3aed16cbdc%3af7645509%3a88144a7a%3a33715776%3a24ee1bba%3a56e9f55f%3a2a733ecd%3ab7778d6c%3ae085fe68%3af46195d3%3a2003d0b8%3a1e771326%3a2bef5fcc%3aa9b7ace7:13923)
    at Sys.Component.create (Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=cntMain_sm1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a83235d95-72c5-4004-91af-69fb711f39d0%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2018.2.710.45%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3a8b7d6a7a-6133-413b-b622-bbc1f3ee15e4%3a16e4e7cd%3aed16cbdc%3af7645509%3a88144a7a%3a33715776%3a24ee1bba%3a56e9f55f%3a2a733ecd%3ab7778d6c%3ae085fe68%3af46195d3%3a2003d0b8%3a1e771326%3a2bef5fcc%3aa9b7ace7:6)
    at <anonymous>:6:5
    at Sys._Application.add_init (Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=cntMain_sm1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a83235d95-72c5-4004-91af-69fb711f39d0%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2018.2.710.45%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3a8b7d6a7a-6133-413b-b622-bbc1f3ee15e4%3a16e4e7cd%3aed16cbdc%3af7645509%3a88144a7a%3a33715776%3a24ee1bba%3a56e9f55f%3a2a733ecd%3ab7778d6c%3ae085fe68%3af46195d3%3a2003d0b8%3a1e771326%3a2bef5fcc%3aa9b7ace7:6)

 

The issue appears to be with RadListBox.  I'm not using any RadListBox so it must be a control rendered automatically by Telerik software.

I tried updating to the latest Telerik controls (2018.2.710).  I tried changing my popup controls from ClientIdMode=Static to ClientIdMode=Auto.  I tried adding my popup controls to the list of <UpdatedControls> in <telerik:AjaxSetting AjaxControlID="RadGrid1">.  I tried disabling compression in both page and popup.  I followed links to several forum posts but have been unable to resolve the issue.  What would you suggest?  Thanks!

Here is the content of my popup (AdjustInventoryQuantity.ascx):

<asp:HiddenField runat="server" id="quantityAtPageLoad" ClientIDMode="Static" value='<%#DataBinder.Eval(Container, "DataItem.CurrentQuantity")%>'/>
<asp:HiddenField runat="server" id="InventoryId" value='<%#DataBinder.Eval(Container, "DataItem.InventoryId")%>'/>
<div class="col-xs-12 pad-5">
    <telerik:RadNumericTextBox runat="server" RenderMode="Lightweight" CssClass="InventoryQuantity" ShowSpinButtons="true" ID="txtCurrentQuantity" Text='<%#DataBinder.Eval(Container, "DataItem.CurrentQuantity")%>' width="100%" textmode="Number " MinValue="0" MaxValue="2147483647">
        <ClientEvents OnValueChanged="AdjustAdjustment"/>
        <NumberFormat GroupSeparator="" DecimalDigits="0" KeepNotRoundedValue="True"></NumberFormat>
    </telerik:RadNumericTextBox>
</div>
<div class="col-xs-12 pad-5">
    <telerik:RadNumericTextBox runat="server" RenderMode="Lightweight" cssclass="InventoryAdjustment" ShowSpinButtons="true" ID="txtAdjustment" MaxLength="11" textmode="Number" width="100%"
                               Placeholder="Enter Adjustment" MinValue="-2147483648" MaxValue="2147483647">
        <ClientEvents OnValueChanged="AdjustCurrentQuantity"/>
        <NumberFormat GroupSeparator="" DecimalDigits="0" KeepNotRoundedValue="True"></NumberFormat>
    </telerik:RadNumericTextBox>
</div>
<div class="col-xs-12 pad-5">
    <telerik:RadTextBox runat="server" RenderMode="Lightweight" TextMode="MultiLine" ID="txtDescription" Placeholder="Enter Description" width="100%" rows="2" CssClass="AdjustInventoryQuantity" Text='<%#DataBinder.Eval(Container, "DataItem.CurrentQuantityDescription")%>'/>
</div>
<div class="col-xs-12 pad-5">
    <asp:Button runat="server" ID="btnSubmit" Text="Save" CommandName="Update" CssClass="btn btn-success btn-block btn-lg " OnClick="Save"/>
    <asp:Button runat="server" ID="btnCancel" Text="Cancel" CssClass="btn btn-default btn-block btn-lg" CommandName="Cancel" OnClick="Cancel" CausesValidation="false"/>
</div>

 

Here is the content of my page:

01.<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
02.                <AjaxSettings>
03.                    <telerik:AjaxSetting AjaxControlID="RadGrid1">
04.                        <UpdatedControls>
05.                            <telerik:AjaxUpdatedControl ControlID="RadGrid1" LoadingPanelID="RadAjaxLoadingPanel1"></telerik:AjaxUpdatedControl>
06.                        </UpdatedControls>
07.                    </telerik:AjaxSetting>
08.                </AjaxSettings>
09.            </telerik:RadAjaxManager>
10.            <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" skin="Default">
11.            </telerik:RadAjaxLoadingPanel>
12.            <telerik:RadAjaxPanel ID="RadAjaxPanel1" runat="server" EnableAJAX="True" LoadingPanelID="RadAjaxLoadingPanel1" ClientEvents-OnRequestStart="pnlRequestStarted">
13.                <telerik:RadPersistenceManagerProxy runat="server" ID="RadPersistenceManagerProxy1" UniqueKey="Inventories">
14.                    <PersistenceSettings>
15.                        <telerik:PersistenceSetting ControlID="RadGrid1" />
16.                    </PersistenceSettings>
17.                </telerik:RadPersistenceManagerProxy>
18.                <telerik:RadGrid  OnPreRender="RadGrid1_OnPreRender" RenderMode="Auto" ID="RadGrid1" GridLines="None" onitemdatabound="RadGrid1_OnItemDataBound" OnItemCommand="RadGrid1_OnItemCommand" AllowFilteringByColumn="true" runat="server" FilterType="HeaderContext" EnableHeaderContextMenu="true" skin="Bootstrap"
19.                     EnableHeaderContextFilterMenu="true" AllowPaging="False" OnFilterCheckListItemsRequested="RadGrid1_FilterCheckListItemsRequested" AllowSorting="true" GroupingEnabled="true">
20.                    <ExportSettings FileName="Inventory" IgnorePaging="True" SuppressColumnDataFormatStrings="True" ExportOnlyData="True" OpenInNewWindow="True" >
21.                        <Excel Format="Xlsx"  />
22.                    </ExportSettings>
23.                    <MasterTableView CssClass="InventoryGrid" AutoGenerateColumns="False" DataKeyNames="InventoryId" CommandItemDisplay="TopAndBottom" AllowPaging="True"  EditMode="PopUp">
24.                        <PagerStyle AlwaysVisible="True" Mode="NextPrevNumericAndAdvanced" />
25.                        <CommandItemTemplate  >
26.                            <asp:ImageButton runat="server" id="btnNew" ImageUrl="/images/icons/add.png" tooltip="Add New Inventory" alternateText="Add New Inventory" commandName="New" cssclass="right pad-5"/>
27.                            <asp:ImageButton runat="server" id="btnPrint" ImageUrl="/images/icons/print.png" tooltip="Print" alternateText="Print" commandName="Print" cssclass="right pad-5"/>
28.                            <asp:ImageButton runat="server" id="btnExport" ImageUrl="/images/icons/save.png" tooltip="Export to Excel" alternateText="Export to Excel" commandName="Export" cssclass="right pad-5" />
29.                        </CommandItemTemplate>
30.                        <Columns>
31.
32.                            <telerik:GridBoundColumn ReadOnly="True" FilterCheckListEnableLoadOnDemand="true" DataField="InventoryName" FilterControlAltText="Filter Inventory Name column" HeaderText="Name" SortExpression="InventoryName" UniqueName="InventoryName"/>
33.                            <telerik:GridBoundColumn ReadOnly="True" Display="False" FilterCheckListEnableLoadOnDemand="false" DataField="InventoryImage" HeaderText="Image" AllowSorting="False" UniqueName="InventoryImage" ConvertEmptyStringToNull="True"/>
34.                            <telerik:GridBoundColumn ReadOnly="True" display="False" FilterCheckListEnableLoadOnDemand="true" DataField="InventoryDescription" FilterControlAltText="Filter Inventory Description column" HeaderText="Description" SortExpression="InventoryDescription" UniqueName="InventoryDescription"/>
35.                            <telerik:GridBoundColumn ReadOnly="True" FilterCheckListEnableLoadOnDemand="true" DataField="BuildingName" FilterControlAltText="Filter Building Name column" HeaderText="Building" SortExpression="BuildingName" UniqueName="BuildingName"/>
36.                            <telerik:GridBoundColumn ReadOnly="True" Display="False" FilterCheckListEnableLoadOnDemand="true" DataField="BuildingId" FilterControlAltText="Filter Building Id column" HeaderText="Building Id" SortExpression="BuildingId" UniqueName="BuildingId"/>
37.                            <telerik:GridBoundColumn ReadOnly="True" FilterCheckListEnableLoadOnDemand="true" DataField="SpaceName" FilterControlAltText="Filter Space Name column" HeaderText="Space" SortExpression="SpaceName" UniqueName="SpaceName"/>
38.                            <telerik:GridBoundColumn ReadOnly="True" Display="false" FilterCheckListEnableLoadOnDemand="true" DataField="SpaceId" FilterControlAltText="Filter Space Id column" HeaderText="Space Id" SortExpression="SpaceId" UniqueName="SpaceId"/>
39.                            <telerik:GridBoundColumn ReadOnly="True" FilterCheckListEnableLoadOnDemand="true" DataField="InventoryTypeName" FilterControlAltText="Filter Inventory Type column" HeaderText="Type" SortExpression="InventoryTypeName" UniqueName="InventoryTypeName"/>
40.                            <telerik:GridBoundColumn ReadOnly="True" FilterCheckListEnableLoadOnDemand="true" DataField="CategoryName" FilterControlAltText="Filter Inventory Category column" HeaderText="Category" SortExpression="CategoryName" UniqueName="CategoryName"/>
41.                            <telerik:GridBoundColumn ReadOnly="True" display="False" FilterCheckListEnableLoadOnDemand="true" DataField="UnitQuantityAbbreviation" FilterControlAltText="Filter Unit Abbreviation" HeaderText="Unit" SortExpression="UnitQuantityAbbreviation" UniqueName="UnitQuantityAbbreviation"/>
42.                            <telerik:GridBoundColumn ReadOnly="True" display="False" FilterCheckListEnableLoadOnDemand="true" DataField="UnitPrice" DataFormatString="{0:C}" FilterControlAltText="Filter Unit Price" HeaderText="Price" SortExpression="UnitPrice" UniqueName="UnitPrice"/>
43.                            <telerik:GridBoundColumn ReadOnly="True" FilterCheckListEnableLoadOnDemand="true" DataField="CurrentQuantity"  FilterControlAltText="Filter Current Quantity" HeaderText="Quantity" SortExpression="CurrentQuantity" UniqueName="CurrentQuantity"/>
44.                            <telerik:GridBoundColumn ReadOnly="True" display="False" FilterCheckListEnableLoadOnDemand="true" DataField="CurrentQuantityDescription"  FilterControlAltText="Filter Current Quantity Description" HeaderText="Quantity Description" SortExpression="CurrentQuantityDescription" UniqueName="CurrentQuantityDescription"/>
45.                            <telerik:GridBoundColumn ReadOnly="True" display="False" FilterCheckListEnableLoadOnDemand="true" DataField="MinimumQuantity" FilterControlAltText="Filter Minimum Quantity" HeaderText="Minimum" SortExpression="MinimumQuantity" UniqueName="MinimumQuantity"/>
46.                            <telerik:GridBoundColumn ReadOnly="True" display="False" FilterCheckListEnableLoadOnDemand="true" DataField="PartNumber" FilterControlAltText="Filter Part Number" HeaderText="Part" SortExpression="PartNumber" UniqueName="PartNumber"/>
47.                            <telerik:GridBoundColumn ReadOnly="True" display="False" FilterCheckListEnableLoadOnDemand="true" DataField="ModelNumber" FilterControlAltText="Filter Model Number" HeaderText="Model" SortExpression="ModelNumber" UniqueName="ModelNumber"/>
48.                            <telerik:GridBoundColumn ReadOnly="True" display="False" FilterCheckListEnableLoadOnDemand="true" DataField="StockNumber" FilterControlAltText="Filter Stock Number" HeaderText="Stock" SortExpression="StockNumber" UniqueName="StockNumber"/>
49.                            <telerik:GridBoundColumn ReadOnly="True" display="False" FilterCheckListEnableLoadOnDemand="true" DataField="Manufacturer" FilterControlAltText="Filter Manufacturer" HeaderText="Mfr." SortExpression="Manufacturer" UniqueName="Manufacturer"/>
50.                            <telerik:GridBoundColumn ReadOnly="True" display="False" FilterCheckListEnableLoadOnDemand="true" DataField="Url" FilterControlAltText="Filter Url" HeaderText="Url" SortExpression="Url" UniqueName="Url"/>
51.                            <telerik:GridEditCommandColumn UniqueName="Adjust" EnableHeaderContextMenu="false" Exportable="False" ButtonType="ImageButton" EditImageUrl="/images/icons/Adjust.png"/>
52.                            <telerik:GridButtonColumn ConfirmText="Delete this inventory?" ConfirmDialogType="RadWindow" EnableHeaderContextMenu="False" ConfirmTitle="Delete" Exportable="False" Reorderable="False" ButtonType="ImageButton" ImageUrl="/images/icons/delete.png" CommandName="Delete" Text="Delete" UniqueName="Delete" />
53.                            <telerik:GridButtonColumn  Text="Edit" CommandName="Detail" Exportable="False" Reorderable="False" EnableHeaderContextMenu="False" FilterCheckListEnableLoadOnDemand="False"  ButtonType="ImageButton" ImageUrl="/images/icons/edit.png"  UniqueName="Detail"/>
54.
55.                        </Columns>
56.                        <EditFormSettings UserControlName="/Controls/AdjustInventoryQuantity.ascx" EditFormType="WebUserControl">
57.                            <PopUpSettings Modal="True" ShowCaptionInEditForm="True" Width="320px"  />
58.                        </EditFormSettings>
59.                    </MasterTableView>
60.                    <ClientSettings>
61.                        <ClientEvents OnPopUpShowing="PopUpShowing" />
62.                        <Selecting AllowRowSelect="true" />
63.                    </ClientSettings>
64.                </telerik:RadGrid>
65.            </telerik:RadAjaxPanel>

 

Page Script:

01.var xPos;
02.var yPos;
03.$(document).ready(function () {
04.    //https://makandracards.com/makandra/657-efficiently-add-a-click-event-handler-to-many-elements-in-jquery
05.    $(document).on('mouseenter', "input[src='/images/icons/Adjust.png']", function (e) {
06.        xPos = e.pageX;
07.        yPos = e.pageY;
08.    });
09.});
10.
11.function pnlRequestStarted(ajaxPanel, eventArgs) {
12.    if (eventArgs.EventTarget.includes("btnExport") || eventArgs.EventTarget.includes("btnPrint")) {
13.        eventArgs.EnableAjax = false;
14.    } else {
15.        eventArgs.EnableAjax = true;
16.    }
17.}
18.var popUp;
19.function PopUpShowing(sender, eventArgs) {
20.    var $sender = $(sender);
21.    popUp = eventArgs.get_popUp();
22.    var popUpWidth = popUp.style.width.substr(0, popUp.style.width.indexOf("px"));
23.    popUp.style.left = xPos - popUpWidth + "px";
24.    popUp.style.top = yPos + "px";
25.}
26.function AdjustCurrentQuantity(sender, eventArgs) {
27.
28.    var quantityAtPageLoad = parseInt($("#quantityAtPageLoad").val());
29.    var adjustment = parseInt($(".InventoryAdjustment").val());
30.
31.    if ((quantityAtPageLoad + adjustment) >= 0) {
32.        $(".InventoryQuantity").val(quantityAtPageLoad + adjustment);
33.    } else {
34.        if (isNaN(adjustment)) {
35.            $(".InventoryQuantity").val(quantityAtPageLoad);
36.        } else {
37.            $(".InventoryAdjustment").val(quantityAtPageLoad * -1);
38.            $(".InventoryQuantity").val(0);
39.        }
40.
41.    }
42.};
43.function AdjustAdjustment(sender, eventArgs) {
44.    var quantityAtPageLoad = parseInt($("#quantityAtPageLoad").val());
45.    var currentQuantity = parseInt($(".InventoryQuantity").val());
46.    if (currentQuantity >= 0) {
47.        $(".InventoryAdjustment").val(currentQuantity - quantityAtPageLoad);
48.    }
49.};

[Marin Bratanov]

Hi,

I advise that you start by removing the RadAjaxPanel, because both the ajax panel and the ajax manager must not be used to ajax-enable the same content: https://docs.telerik.com/devtools/aspnet-ajax/controls/ajaxmanager/troubleshooting/controls-wrapped-in-ajaxpanel-and-added-to-ajaxmanager-settings.

On the listbox - it is used by the excel-like filtering that is enabled on this grid - this is what is used to show the values with the checkboxes. It is likely that the double ajax-setup is trying to dispose/initialize it twice, hence the error.

If this does not help, I advise that you open a support ticket and send us a runnable example that showcases the issue.If you cannot add dummy date (e.g, like in this KB), you can use our demos as a standard database source.

Regards,
Marin Bratanov
Progress Telerik

[Dan]

Thanks, but removing the RadAjaxPanel didn't resolve the error.  

[Marin Bratanov]

Hello,

In a complex page it is possible that such nesting of update panels and RadAjax controls happens on many levels. For example, the placeholder in the master page may also be wrapped in a RadAjaxPanel or UpdaetPanel which can be causing this issue.

To help further in case this does not help, we will need you to open a ticket and send us a runnable example of the problem so we can debug it. This is not a problem that has a unique and generally known cause and so each case has to be inspected individually.

Regards,
Marin Bratanov
Progress Telerik