Hello hemant_kg

I’ve written this code a while ago. What the code do is when you check either uncheck a checkbox from parent Row,  the code check / uncheck all checkboxes in  its child rows.

<script type="text/javascript">

        var whdg;

        function InitializHandler(sender, args) {

            whdg = sender;

        }

        var isChecked = false;

        // Loop through all child island's rows check either uncheck the checkbox according to parent row checkbox state.

        function ClickHandler(sender, args) {

           isChecked = args.get_item().get_row().get_cell(0).get_element().children[0].checked;

            var rowIndex  = args.get_item().get_row().get_index();

            var childGrids = whdg.get_rows().get_row(rowIndex).get_rowIslands();

            for (var j = 0; j < childGrids[0].get_rows().get_length(); j++) {

                childGrids[0].get_rows()

                        .get_row(j).get_cell(0)

                        .get_element()

                        .children[0].checked = isChecked;

            }

        }

    </script>

    <form id="form1" runat="server">

    <div>

        <asp:ScriptManager ID="ScriptManager1" runat="server">

        </asp:ScriptManager>

        <ig:WebHierarchicalDataGrid ID="WebHierarchicalDataGrid1" runat="server" Height="350px"

            AutoGenerateBands="false" AutoGenerateColumns="false" DataMember="Parent" Width="832px"

            InitialDataBindDepth="1" InitialExpandDepth="1"

            DataKeyFields="id">

            <ClientEvents Initialize="InitializHandler"  Click="ClickHandler"/>

            <Columns>

                <ig:TemplateDataField Key="CheckBox">

                 <ItemTemplate>

                    <asp:CheckBox ID="CheckBox2" runat="server" />

                 </ItemTemplate>

                </ig:TemplateDataField>

                <ig:BoundDataField Key="id">

                </ig:BoundDataField>

                <ig:BoundDataField Key="Data">

                </ig:BoundDataField>

            </Columns>

            <Bands>

                <ig:Band Key="ChildBand" DataMember="Child">

                    <Columns>

                        <ig:TemplateDataField Key="CheckBox">

                            <Header Text="CheckBox"/>

                            <ItemTemplate>

                                <asp:CheckBox ID="CheckBox1" runat="server" />

                            </ItemTemplate>

                        </ig:TemplateDataField>

                        <ig:BoundDataField Key="id">

                        </ig:BoundDataField>

                        <ig:BoundDataField Key="Data">

                        </ig:BoundDataField>

                    </Columns>

                </ig:Band>

            </Bands>

        </ig:WebHierarchicalDataGrid>

    </div>

    </form>

Hope this helps