JS error on getCellByColumnUniqueName

[Hk]

I get this JS error when I call getCellByColumnUniqueName:

_242 is null
getCellByColumnUniqueName()(null, "iPackageId")ScriptRe...220000000 (line 3399)
getDataItemKeyValue(Object, null)Default.aspx (line 235)
RowSelected(Object, Object)Default.aspx (line 229)
_handler()(Object, Object)ScriptRe...594496661 (line 2503)
raiseEvent()("rowSelected", Object)ScriptRe...220000000 (line 794)
(?)()()ScriptRe...220000000 (line 6551)
_selectRowInternal()(tr#ctl00_ctl00_baseContentPlaceHolder1_cpContentArea_~/Configurations/RecordingConfiguration/TabControls/TabPackageSelection.ascxuserControl_RadGrid1_ctl00__1.GridAltRow_Vista, Object rawEvent=Event click altKey=false button=0, false, false, true, true)ScriptRe...220000000 (line 2578)
_click()(Object rawEvent=Event click altKey=false button=0)ScriptRe...220000000 (line 2485)
(?)()()ScriptRe...594496661 (line 50)
browserHandler()(click clientX=231, clientY=223)ScriptRe...594496661 (line 3034)
[Break on this error] return _242.get_element().cells[i];

this is my page and grid:

<asp:Label runat="server" ID="RESX_lblChooseTelephonyEnviroment" meta:resourcekey="RESX_lblChooseTelephonyEnviroment"></asp:Label>
<br />
<br />
<telerik:RadGrid ID="RadGrid1" runat="server" DataSourceID="PackagesDataSource" GridLines="None"
    Skin="Vista" Width="100%" BorderWidth="0px" ShowHeader="False" AllowAutomaticDeletes="True"
    AllowAutomaticInserts="True" AllowAutomaticUpdates="True" AllowMultiRowEdit="false"
    AllowMultiRowSelection="false">
    <HeaderContextMenu EnableTheming="True">
        <CollapseAnimation Type="OutQuint" Duration="200"></CollapseAnimation>
    </HeaderContextMenu>
    <MasterTableView AutoGenerateColumns="False" CommandItemDisplay="TopAndBottom" DataKeyNames="iPackageId"
        DataSourceID="PackagesDataSource" EditMode="InPlace">
        <CommandItemTemplate>
            <div style="padding: 0 5px;">
                <asp:LinkButton ID="btnCancel" runat="server" CommandName="CancelAll" CausesValidation="false"
                    Visible='<%# RadGrid1.EditIndexes.Count > 0 %>'><img style="border:0px;vertical-align:middle;" alt="" src="./Img/Cancel.gif" />Cancel</asp:LinkButton>&nbsp;&nbsp;
                <asp:LinkButton ID="Add" runat="server" CommandName="InitInsert" CausesValidation="false"
                    Enabled='<%# !RadGrid1.MasterTableView.IsItemInserted %>'><img style="border:0px;vertical-align:middle;" alt="" src="/Img/AddRecord.gif" />Add Telephony Enviroment</asp:LinkButton>&nbsp;&nbsp;
                <asp:LinkButton ID="LinkButton1" CausesValidation="false" OnClientClick="javascript:return confirm('Delete Selected package?')"
                    runat="server" CommandName="DeleteSelected"><img style="border:0px;vertical-align:middle;" alt="" src="/Img/Delete.gif" />Delete</asp:LinkButton>&nbsp;&nbsp;
                <asp:LinkButton ID="LinkButton3" runat="server" CausesValidation="false" CommandName="PerformInsert"
                    Visible='<%# RadGrid1.MasterTableView.IsItemInserted %>'>Add this Customer</asp:LinkButton>&nbsp;&nbsp;
            </div>
        </CommandItemTemplate>
        <RowIndicatorColumn>
            <HeaderStyle Width="20px"></HeaderStyle>
        </RowIndicatorColumn>
        <ExpandCollapseColumn>
            <HeaderStyle Width="20px"></HeaderStyle>
        </ExpandCollapseColumn>
        <Columns>
            <telerik:GridBoundColumn DataField="iPackageId" DataType="System.Int32" HeaderText="iPackageId"
                ReadOnly="True" SortExpression="iPackageId" UniqueName="iPackageId" Display="false"
                ForceExtractValue="None">
            </telerik:GridBoundColumn>
            <telerik:GridDropDownColumn DataSourceID="PackageTypesDataSource" SortExpression="iPackageType"
                UniqueName="" DataField="iPackageType" meta:resourcekey="RESX_iPackageType" ListValueField="iPackageTypeID"
                ListTextField="nvcPackageName" DropDownControlType="RadComboBox">
            </telerik:GridDropDownColumn>
            <telerik:GridBoundColumn DataField="nvcPackageName" HeaderText="nvcPackageName" SortExpression="nvcPackageName"
                UniqueName="nvcPackageName" Display="true" meta:resourcekey="RESX_nvcPackageName">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn DataField="iSwitchID" DataType="System.Int32" HeaderText="iSwitchID"
                SortExpression="iSwitchID" UniqueName="iSwitchID" Display="false">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn DataField="iWizardStep" DataType="System.Int32" HeaderText="iWizardStep"
                SortExpression="iWizardStep" UniqueName="iWizardStep" Display="false">
            </telerik:GridBoundColumn>
            <telerik:GridButtonColumn ButtonType="ImageButton" CommandName="Delete">
            </telerik:GridButtonColumn>
        </Columns>
        <EditFormSettings CaptionDataField="iCaptureId">
            <FormTableItemStyle Width="100%" Height="29px"></FormTableItemStyle>
            <FormTableStyle GridLines="None" CellSpacing="0" CellPadding="2"></FormTableStyle>
            <FormStyle Width="100%" BackColor="#eef2ea"></FormStyle>
            <EditColumn ButtonType="ImageButton" />
        </EditFormSettings>
    </MasterTableView>
    <SelectedItemStyle BorderWidth="1px" Font-Bold="True" Wrap="True" />
    <ClientSettings>
        <ClientEvents OnRowSelected="RowSelected" />
        <Selecting AllowRowSelect="True" />
    </ClientSettings>
    <FilterMenu EnableTheming="True">
        <CollapseAnimation Type="OutQuint" Duration="200"></CollapseAnimation>
    </FilterMenu>
</telerik:RadGrid>
<asp:ObjectDataSource ID="PackagesDataSource" runat="server" DeleteMethod="Delete"
    InsertMethod="Insert" OldValuesParameterFormatString="original_{0}" SelectMethod="Fill"
    TypeName="NPEWebApplication.Configurations.RecordingConfiguration.CustomDataSources.PackageDataSource"
    UpdateMethod="Update">
    <DeleteParameters>
        <asp:Parameter Name="iPackageId" Type="String" />
        <asp:Parameter Name="original_iPackageId" Type="Int32" />
    </DeleteParameters>
    <UpdateParameters>
        <asp:Parameter Name="iPackageType" Type="Int32" />
        <asp:Parameter Name="nvcPackageName" Type="String" />
        <asp:Parameter Name="iSwitchID" Type="Int32" />
        <asp:Parameter Name="iWizardStep" Type="Int32" />
        <asp:Parameter Name="original_iPackageId" Type="Int32" />
    </UpdateParameters>
    <InsertParameters>
        <asp:Parameter Name="iPackageId" Type="Int32" />
        <asp:Parameter Name="iPackageType" Type="Int32" />
        <asp:Parameter Name="nvcPackageName" Type="String" />
        <asp:Parameter Name="iSwitchID" Type="Int32" />
        <asp:Parameter Name="iWizardStep" Type="Int32" />
    </InsertParameters>
</asp:ObjectDataSource>
<asp:ObjectDataSource ID="PackageTypesDataSource" runat="server" OldValuesParameterFormatString="original_{0}"
    SelectMethod="Fill" TypeName="NPEWebApplication.Configurations.RecordingConfiguration.CustomDataSources.PackageTypesDataSource">
</asp:ObjectDataSource>
<asp:HiddenField runat="server" ID="hdnSelectedIndex" Value="-1" />

<script language="javascript" type="text/javascript">
    function RowSelected(sender, eventArgs) {
        var indexField = document.getElementById("<%=hdnSelectedIndex.ClientID %>");
        if (indexField) {
            indexField.value = getDataItemKeyValue(sender, eventArgs.get_gridDataItem());
        }
        alert(indexField.value);
    }
    function getDataItemKeyValue(radGrid, item) {
        alert("hey");
        alert(radGrid.get_masterTableView().getCellByColumnUniqueName(item, "iPackageId"));
        return parseInt(radGrid.get_masterTableView().getCellByColumnUniqueName(item, "iPackageId").innerHTML);
    }
</script>

[Daniel]

Hello Hadar,

I recommend you check whether eventArgs.get_gridDataItem() is not null in the following line:

getDataItemKeyValue(sender, eventArgs.get_gridDataItem());

Please examine the document shown below:
Getting familiar with client-side API

"Important note: For performance reasons, the <GridTableViewInstance>.get_dataItems() collection will be available only when you enable specific client features/events for the rows in the grid (such AllowRowResize, AllowRowSelect, OnRowClick, etc.)."

Best regards,
Daniel
the Telerik team

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