textbox in RadGrid

[sadeq]

hi, i want have some textboxes in a RadGrid and i use each one of the(insert some data in database)

i don't know what i have to do please some help to me

 <telerik:RadGrid AutoGenerateColumns="False" ID="RIV_RateHireGrid" MasterTableView-DataKeyNames="ID" AllowPaging="True" PageSize="5" AllowCustomPaging="False"
                                OnItemCommand="ActionForGrid" OnItemCreated="RadGrid_ItemCreated" AllowSorting="True" Skin="Web20" CellSpacing="0" GridLines="None" runat="server">
                                <MasterTableView EditMode="InPlace" EnableNoRecordsTemplate="true">

                                    <ColumnGroups>
                                        <telerik:GridColumnGroup HeaderText="CMO" Name="CMO">
                                        </telerik:GridColumnGroup>
                                        <telerik:GridColumnGroup HeaderText="RIV" Name="RIV">
                                        </telerik:GridColumnGroup>
                                        <telerik:GridColumnGroup HeaderText="a" Name="Ra" ParentGroupName="RIV"></telerik:GridColumnGroup>
                                        <telerik:GridColumnGroup HeaderText="b" Name="Rb" ParentGroupName="RIV"></telerik:GridColumnGroup>
                                        <telerik:GridColumnGroup HeaderText="c" Name="Rc" ParentGroupName="RIV"></telerik:GridColumnGroup>

                                        <telerik:GridColumnGroup HeaderText="a" Name="Ca" ParentGroupName="CMO"></telerik:GridColumnGroup>
                                        <telerik:GridColumnGroup HeaderText="b" Name="Cb" ParentGroupName="CMO"></telerik:GridColumnGroup>
                                        <telerik:GridColumnGroup HeaderText="c" Name="Cc" ParentGroupName="CMO"></telerik:GridColumnGroup>


                                    </ColumnGroups>

                                   
                                    <HeaderStyle HorizontalAlign="Center" Font-Names="b nazanin" Width="16.66" />
                                    <AlternatingItemStyle HorizontalAlign="Center" Font-Names="b nazanin" Width="16.66" />
                                    <ItemStyle HorizontalAlign="Center" Font-Names="b nazanin" Width="16.66" />
                                    <Columns>
                                        <telerik:GridBoundColumn DataField="ID" HeaderText="gp" />
                                        <telerik:GridBoundColumn DataField="Year" HeaderText="1-240" ColumnGroupName="Ra" />
                                        <telerik:GridBoundColumn DataField="Year" HeaderText="241-270" ColumnGroupName="Rb" />
                                        <telerik:GridBoundColumn DataField="Year" HeaderText="271-..." ColumnGroupName="Rc" />
                                        <telerik:GridBoundColumn DataField="Year" HeaderText="1-240" ColumnGroupName="Ca" />
                                        <telerik:GridBoundColumn DataField="Year" HeaderText="241-270" ColumnGroupName="Cb" />
                                        <telerik:GridBoundColumn DataField="Year" HeaderText="271-..." ColumnGroupName="Cc" />
                                        
                                        
                                    </Columns>
                                </MasterTableView>
                            </telerik:RadGrid>