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How to change background color of RADGRID control row based the column values?

Hi
I am using Telerik RadGrid control to display display from a dataset.
Based on the data in a particular column of the row I would like to display different background color for different rows.
Let me say for example I have column called MARKS in my grid, if this column in a row null, then the I want that row background color to be RED.
How ca I do this? Where should I bind this event?
Thanks

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Praveen Kumar

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ASKER

In my RADGRID I am displaying the value in the grid using LABEL to display the value.
So when I am using if (int.Parse(dataBoundItem["NBR"].Text) == null ), it always returning since the dat is in the label.
I tried to use FINDCONTROL to find find the label, but it is throwing exception.
Label lbl=(Label)FindControl("lblNbr");

<telerik:RadGrid AllowPaging="true" ID="grdQueues" runat="server" OnSelectedIndexChanged="grd_SelectedIndexChanged"  
                        ShowStatusBar="true" AllowSorting="true" PageSize="10" AutoGenerateColumns="false" 
                        OnPageIndexChanged="grd_PageIndexChanged" OnNeedDataSource="grd_NeedDataSource"
                        Width="100%" Visible="false" OnExcelMLExportStylesCreated="grd_ExcelMLExportStylesCreated"
                        OnExcelMLExportRowCreated="grd_ExcelMLExportRowCreated">             
                    <PagerStyle AlwaysVisible="true" Mode="NextPrevAndNumeric" PagerTextFormat="Change page: {4} | Displaying page {0} of {1} |, items {2} to {3} of {5}." />
                    <ClientSettings EnableRowHoverStyle="true" EnablePostBackOnRowClick="true">
                        <Selecting AllowRowSelect="true" />
                        <Scrolling AllowScroll="true" UseStaticHeaders="true" />                        
                    </ClientSettings>
                    <MasterTableView ShowHeadersWhenNoRecords="true" EditMode="PopUp">      
                        <NoRecordsTemplate><div align="center">
                                No Records to Display
                            </div>
                        </NoRecordsTemplate>
                        <Columns>
                            <telerik:GridTemplateColumn HeaderText="Acct Nbr">
                                <ItemTemplate>
                                    <asp:Label ID="lblNbr" ClientIDMode="Static" runat="server" Text='<%# Bind("NBR") %>'></asp:Label>
                                </ItemTemplate>
                                <ItemStyle HorizontalAlign="Center" />
                                    <HeaderStyle HorizontalAlign="Center" Font-Bold="true" />
                            </telerik:GridTemplateColumn>
                            <telerik:GridTemplateColumn HeaderText="Customer Name">
                                <ItemTemplate>
                                    <asp:Label ID="lblName" ClientIDMode="Static" runat="server" Text='<%# Bind("NAME") %>'></asp:Label>
                                </ItemTemplate>
                                <ItemStyle HorizontalAlign="Center" />
                                    <HeaderStyle HorizontalAlign="Center" Font-Bold="true" />
                            </telerik:GridTemplateColumn>                            
                        </Columns>                       
                    </MasterTableView>                      
                    </telerik:RadGrid>

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