Bind dataitem properties inside the method called in templatefield of DataGrid in asp.net

Bind dataitem properties inside the method called in templatefield of DataGrid in asp.net

<asp:DataGrid ID="overview_propertie" runat="server" AutoGenerateColumns="false"
                        CellPadding="0" CssClass="propertylist" GridLines="None" UseAccessibleHeader="true"
                        Width="100%" ShowHeader="False">
                        <AlternatingItemStyle CssClass="row1" />
                        <Columns>
                            <asp:BoundColumn DataField="Name" HeaderText="<%$ Resources:property%>" ItemStyle-CssClass="header">
                                <ItemStyle CssClass="header" />
                            </asp:BoundColumn>
                            <asp:BoundColumn DataField="Value" HeaderText="<%$ Resources:value%>" />
                            <asp:BoundColumn DataField="Description" HeaderText="Description" ReadOnly="true" />
                            <asp:TemplateColumn>
                                <ItemTemplate>
                                    <table>
                                        <tr>
                                            <td>
                                                <%# GetPropertyFiles(DataBinder.Eval(Container.DataItem, "ItemId"), DataBinder.Eval(Container.DataItem, "PropertyTypeId"))%>
                                                <a class="AttachButton" href="javascript://" onclick="return AddItemPropertyFiles('<%#Eval("ItemId") %>','<%#Eval("PropertyTypeId") %>');">
                                                    Attach File</a>
                                            </td>
                                        </tr>
                                    </table>
                                </ItemTemplate>
                            </asp:TemplateColumn>
                        </Columns>
                    </asp:DataGrid>